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DENİZCİLİK İNGİLİZCESİ. ------------- is the first signal of lube- oil trouble. A)Lube oil gravity tank low level alarm goes off B)Low lube oil sump level C) Low outlet temperature from lube oil coolers D)No flow throught bull’s eye from gravity tank observed E)A and B. - PowerPoint PPT Presentation
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DENİZCİLİK İNGİLİZCESİ
------------- is the first signal of
lube- oil trouble.• A) Lube oil gravity tank low level alarm goes
off
• B) Low lube oil sump level
• C) Low outlet temperature from lube oil coolers
• D) No flow throught bull’s eye from gravity tank observed
• E) A and B
The usual cause of crankcase explosions in diesel engines
is not -----------------------• Heating lubricating oil
• Overheating lubricating oil
• Poor condition of the cylinder
• Crank shaft bearing failures maintenance
• Any above
-------------- is not one of the advantages of the open
cooling system.• Being the simplest system
• No requirement of heat exchange
• Obligation of keeping engine cool
• The requirement of only one water circulating pump
• The requirement of 2 water circulating pumps
4.The TEV (thermostatic expansion valve) is located
between:A. The receiver and the king valve
B. The king valve and solenoid
C. Both A and B
D. The solenoid valve and evaporator
E. The charging valve and solenoid
5. Another name for the liquid valve is:
A. Master valve
B. King valve
C. Freon valve
D. Shut off valve
E. None of above
6. What is the high pressure side of the refrigeration system?
A. Compressor to condenser
B. Evaporator to compressor
C. Expansion valve to evaporator
D. Compressor to expansion valve
E. Evaporator
7. The low pressure side of a refrigeration system is from the:• A) Expansion valve to compressor
• B) Compressor to expansion valve
• C) Expansion valve to the evaporator
• D) Condenser to the expansion valve
• E) None of the above
8. The bulb for the TEV (thermostatic expansion
valve) is located:
A. In the middle of the evaporator coils
B. Near the evaporator coil outlet
C. Near the evaporator coil inlet
D. On the bottom row of the evaporator
E. None of the above
9. The solenoid valve can be typed as a:
A. Thermal valve
B. Magnetic stop valve
C. Bellows valve
D. Bimetallic valve
E. Both C and D
10. What is the advantage of using a hydraulic starting system
for an emergency diesel?
A. The system is inexpensive
B. High pressure lines are not required
C. It is compact
D. Faster cranking speeds are obtained
E. None of the above
11. What would cause white smoke after you just started
the diesel?
A. Too week battery power
B. Water in the fuel
C. Water in the gas
D. Water in the oil
E. Salt water in cooling water
12. Pre combustion chambers in a diesel engine:
A. Require that each cylinder use two spray nozzles
B.Require the use of flat crowned pistons to obtain
turbulence
C.Permit the use of a wide range of fuel in that
engine
D.Contain all of the air charge at the end of the
compression stroke
E.Require that each cylinder use more than four spray
nozzles
13. The coils in the evaporator are attached to the header by:
A. Pipe nipples
B. Union type fittings
C. Welding
D. Bolted flanges
E. Both C and D
14. Cylinder liner are generally used on diesel
engines because:A. Liners may be easily replaced after the cylinder
walls show wear
B. Liners provide a more efficient cooling system
C. Rubbing speeds are reduced through
the use of liners
D. Liners provide a better lubricating surface
E. None of the above
15. The dehydrator on a refrigeration plant is used to:
A. Add moisture to the system
B. Remove moisture from the system
C. Remove air from the system
D. Remove oil from the system
E. Both C and D
16. Regardless of the geographical location of on oil spill, you should
notify the ------------------
A. Local police department
B. Local fire department
C. Corps of Engineers
D. Coast Guard
E. The pilot
17. ---------------is the principal hazard to staff when a diesel
nozzle tester is in use is
A. Electrical shock
B. Toxic fumes
C. Explosion
D. Blood poisoning
E. Loosing consciousness
18. A “pneumercator” measures:
A. Oil pressure
B. Air level
C. Liquid level
D. Air pressure
E. Air temperature
19. What type of gauge reads pressure and vacuum?
A. Duplex
B. Simplex
C. Both B and C
D. Compound
E. Bourdon tube
20. Most gauges in the fire room are:
A. Manometers
B. Thermocouples
C. Dual purpose
D. Thermometers
E. Bourdon tube – type
21. The removal of contaminating impurities from lubricating oil will
......................
A. Increase engine wear
B. Decrease engine wear
C. Increase possible breakdowns
D. Decrease possible breakdowns
E. B and D
22. Cut out system on the aux boiler
operates ................................
• A) Low level alarm
• B) Low low level alarm
• C) High level alarm
• D) High pressure alarm
• E) Low pressure alarm
23. ---------------is the cause of burned exhaust valves
A. Overloaded cylinder
B. Poor combustion
C. Distortion and faulty reseating maintenance
D. Any above
E. A and B
24. When a cargo hose joint or coupling starts to leak badly the
attempt you should do is to...A. Reduce pressure and rag
leak securely
B. Shut down transfer and make repairs
C. Soak spill with sawdust and reduce
pumping pressure
D. Wash deck immediately and close tank
tops
E. Carry on transfer pumping
25. Water in the lube oil system may be detected by: I. sounding lube oil tanks with water sensitive paste; II.
observing the purifier discharge.
A. I
B. II
C. I and II
D. Neither I nor II
E. None of above
26. Electrohydraulic steering units are protected from pounding forces
(rudder shock) by:
A. Buffer springs
B. Follow up mechanism
C. Relief valves
D. Relieving gear
E. Steering pumps
27. Blue smoke coming from the diesel exhaust would indicate:
A.Excessive fuel consumption/unburned
fuel
B. Burning of lube oil due to possible blow-
by
C. Lean fuel/air mixture, too much air
D. Insufficient amount of fuel consumption
E. None of the above
28. The valve which is always partially open when the
evaporator is in operation is the:
A. Vapor valve
B. Continuous blowdown valve
C. Bottom blowdown valve
D. Surface blowdown valve
E. Fresh water valve
29. Studs and nuts intended for use in main steam line flanges and
fittings are marked with an “H” or a “T” to show they are:
• A) Heat resistant
• B) Hard finished
• C) Half threaded
• D) Corrosion resistant
• E) Fire proof
30. The rotating part of a micrometer is the:
A. Anvil
B. Barrel
C. Frame
D. Thimble
E. Cover
31. An advantage of aluminum pistons compared
to cast iron pistons is:
A. Greater high temperature strength
B. Greater weight per cubic meter
C. Increased resistance to wear
D. Low temperature strength
E. Better heat conductivity
32. Trunk type diesel engine pistons are most effectively
cooled when heat is:
A. Radiated through the engine block
B.Mixed with lubrication oil
C.Conducted through the piston crown
D. Transferred to escaping exhaust gases
E. Transferred to water cooled cylinder
walls
33. Cavitation, the forming and bursting of vapor filled cavities or bubbles will result in ...........
A. A loss of thrust
B. Erosion of the blade surface
C. Vibrations in the afterbody of the ship
D. Noise
E. All above
34. When the oil in the seperator is decreasing, which place
cannot be leaking?
A. Lower bearing casing
B. Drum shaft
C. Wormgear shaft bearing hosing
D. Middle ball bearing casing
E. The o-ring at shock water entrance to
seperator into shockwater
35. -------------should be regarded as a special attention after
installing a new hydraulic pump.
A) The relief filters should be readjusted
B) The filters and strainers should be
checked frequently
C) System pressures should be readjusted
D) The fluid should be drained and
renewed
E) All above
36. All details of fuel bunkering, ballast handling, tank cleaning or slop disposal must be entered in the ...............................................
A. Rough log
B. Engine room log
C. Oil record book
D. Smooth log
E. A and B
37. It shall be the responsibility of the ------------------- to prepare the boilers for inspection.
A. Chief Engineer
B. 2nd Engineer
C. Boatswain
D. 2nd officer
E. Any above organization
38. Performance of a turbocharged engine can be
improved by:
A.Decreasing valve over lap
B. Preheating
C. Aftercooling intake air
D. Preheating light fuels
E. Heating intake air
39. When maneuvering, you discover heavy smoke coming from the turbocharger casing. You should:
A. Check the air filter for dirt
B. Check for an exhaust leak
C. Check the cooling water temperature
D. Notify the bridge and ask to shut the
engine down
E. Check fuel oil consumption
40. A device which will function to bring an engine to a full stop in order to protect it from damage due to excessively high speed is known as a/an:
A. Torque limiter
B. Overspeed trip
C. Overspeed governor
D. Load limit governor
E. Any of above
41. The requirement for portable fire equipment is ................
A. Annual check
B. Keeping in easily accessible places
C. Hose connections and keeping hoses in good condition
D. All above
E. Before the end of consuming period
42. A fire sprinkling system must be fitted ........
A. On all vessels over 5000 GT.
B. In conjuction with the Co2 system,
C. With a pressure tank of fresh water to the supply system pending the starting of the pump,
D. None of the above
E. A and C
43. The process of supplying the intake of a diesel engine with air at a pressure
greater than atmospheric is called
A. Engine displacement
B. Scavenging
C. Air injection
D. Supercharging
E. Intercooling
44. In the simple mechanical governor, the:
A.Flywheel centrufigal force is balanced by spring pressure
B.Centrifugal force rotates the ball head
C.Flyweight centrifugal force is balanced by hydrolic pressure
D.Speeder spring actuates the fuel control rod.
E.Hydrolic force rotates the ball head
45. The bulb for the TEV (Thermostatic Expansion Valve) is
located..........
A.In the middle of evaporator coils
B.Near the evaporator coils outlet
C.Near the evaporator coils inlet
D.On the bottom row of the evaporator
E.None of the above
46. The coils in the evaporator are attached to the header by
A.Pipe nipples
B.Union type fittings
C.Welding
D.Bolted flanges
E.Both C and D
47. The dehydrator on a refrigeration plant is used to ...
A.Add moisture to the system
B.Remove moisture from the system
C.Remove air from the system
D.Remove oil from the system
E.Both C and D
48. The oil level in the compressor should be checked:
A.While the compressor is in the operation
B.Just before starting the compressor
C.After a long period of operation
D.For both B and C
E.None of the above
49. As freon leaves the expansion valve:
A.Pressure decrease-Volume increase
B.Volume decrease-Pressure increase
C.Volume increase-Pressure increase
D.Pressure increase-Volume decrease
E.None of the above
50. The selonoid valve can be typed as a:
A.Thermal valve
B.Magnetic stop valve
C.Bellows valve
D.Bimetallic valve
E.Both C and D
51. What statement is not true regarding the function of steam turbine
A. Steam turbine extracts mechanical work from the energy stored in steam
B. Steam turbine generates electrical energy
C. Sometimes steam turbine is connected to a reduction gear
D. Steam turbine is used as cargo pump drive source
E. Steam turbine produces steam for steam engine
52. The burning of fuel and air mixture in the cylinder is called as:
A.Propulsion
B.Combustion
C.Expansion
D.Compression
E.Conversion
53. “Gas will expand when heat is applied”What statement below has the same
meaning with this law of phsycs
A.Gas expands unless heat is applied
B.When gas expand, its temperature decreases
C.Whenever gas is heated, it expands
D.Gas expands, otherwise heat is applied
E.If we expand the gas, it will heat
54. “When a gas is compressed, the temperature of the gas will increase”
What word can be used instead of underlined word without changing meaning
A.Decrease
B.Raise
C.Reduce
D.Expand
E.Exceed
55. What statement is not true regarding gas turbines
A. Gas turbine operates on the Otto Cycle
B. Gas turbine has low manoeuvring capability
C. Gas turbine are used on super tankers, naval ships or aircrafts
D. Gas turbine is not attractive for a ship owner because of high fuel cost
E. Gas turbine is an internal combustion engine
56. Performance of a turbocharged engine can be improved by
a.Decreasing valve overlap
b.Preheating
c.Aftercooling intake air
d.Preheating light fuels
e.Heating intake air
57. When maneuvering, you discover heavy smoke coming from the
turbocharger casing. You should:
a.Check the air filter for dirt
b.Check for an exhaust leak
c.Check the cooling water temperature
d.Notify the bridge and ask to shut the engine down
e.Check fuel oil consumption
58. A device which will function to bring an engine to full stop in order to protect
it from damage due to excessiveley high speed is known as a/an:
a.Torque limiter
b.Overspeed trip
c.Overspeed governor
d.Load limit gavernor
e.Any of above
59. Refrigerant leakage from the compressor crankcase is
prevented by........
a.Using skirt type piston
b.Using shaftseals
c.Using lantern rings
d.Maintaining a vacuum in the crankcase
e.Any above
60. The reciprocating motion of a connecting rod is transformed into a rotary motion by the .......
a.Crankshaft
b.Crankwebs
c.Crank cheeks
d.Crankpins
e.Piston
61. A pyrometer is normally used to measure:
a.Steam pressure
b.Water temperature
c.Draft loss
d.Humidity
e.Gas temperature
62. The successive order of 4 stroke diesel engines:
a.Compression-suction-firing-exhaust
b.Suction-firing-compression-exhaust
c.Suction-compression-exhaust-firing
d.Suction-compression-firing-exhaust
e.Compression-air inlet-firing-exhaust
63. When the valves are operated........ on a diesel engine, they are actuated by means of cams, pushrods, rocker
arms and rollers
a. Mechanically
b. Hydrolically
c. Pneumatically
d. Electrically
e. Any above
64. The pistonheads in the engine are manifactured concave and
convex shaped in order that........
a.The vessel will be fasterb.It will control the temperature of the engine
c.It will increase oil pressure in the engine
d.It will increase the durability of the piston
e.It will provide a powerful engine
65. Lubrication oil viscosity in an operation diesel engine can be
reduced by:
a.Overloading the engine
b.Increasing the amount of lube oil
c.Decresing the amount of cooling water
d.Combustion by products contamination
e.Fuel oil dilution
66. All the following are used for low temperature starting, except:
a.Ether
b.Jacket water heaters
c.Both a and b
d.Air intake heaters
e.Cylinder compression ratio reduced
67. The purpose of the low pressure cutout switch is to:
a. Maintain liquid refrigerant at the suction of the compressor
b. Maintain a preset suction pressure to the compressor
c. Cut out the compressor in at a preset temperature
d. Maintain a compressor in at a preset temperature
e. Cut compressor in and out at a preset pressure
68. In terms of pressure and temperature, what happens to the
primary refrigerant in the compressora. Its pressure and temperature are both lowered
b. Its pressure and temperature are both raised
c. Its pressure is lowered and its temperature is raised
d. Its pressure is raised and its temperature is lowered
e. None of the above
69. Watertube boilers are designed to operate within the
conditions of ........
a. High pressure, temperature, capacity
b. Low pressure but high capacity
c. Heavy but quick steam raising process
d. A and c
e. For the auxiliary purposes
70. The purpose of the evaporator is to:
a.Absorb latent heat of vaporization
b.Absorb latent heat of fusion
c.Transfer latent heat of vaporization
d.Transfer latent heat of fusion
e.Transfer latent heat of freezing
71. In a gas turbine , the pressure of air is changed
a.At the inlet
b.In the combustion chamber
c.Through the compressor
d.During the combustion
e.Through the inlet of turbine
72. What factor is not primarily taken into account by a ship
owner when choosing an engine
a. Cost
b. Propulsive efficiency
c. Size and weight
d. Maintenance work load
e. Installation time
73. The term ........indicates the piston motion in the cylinder
a.Cycle
b.Sequence
c.Combustion
d.Stroke
e.Ignition
74. The sequence of events that take place in the cylinder of an engine is indicated by the term:
a.Cycle
b.Stroke
c.Power
d.Compression
e.Combustion
75. “Piston moves upward to almost top of the cylinder, both intake and exhaust valves are closed. The air
compressed above the piston” describes the .......... stroke
a.Compression
b.Power
c.Intake
d.Exhaust
e.Ignition
76. What statement is not true regarding power stroke?
a.The air pressure is very high
b.The compressed air temperature is below the ignition point of the fuel
c.The heated air ignites the fuel
d.The intake and exhaust valves are closed
e.Power stroke comes after compression stroke
77. “The piston is forcing the exhaust gas out of the cylinder by moving
downward”What word must be changed to get the
true meaninga. Piston
b. Exhaust
c. Gas
d. Cylinder
e. Downword
78. What statement is not true regarding two-stroke engines?
a. Two stroke engines are uniflow and cross flow types
b. Two stroke engines have ports on liner
c. Crankshaft completes two revolutions in a two stroke cycle
d. Compression and power strokes are two strokes comprising the cycle
e. Two-stroke engines may be fitted with crossheads
79. In “Sulzer 7RLB 66”; 66 indicates ........
a.The number of cylinder
b.The diameter of cylinders
c.The year that engine manufactured
d.Revolution per minute
e.Model
80. .......is not stationary part of a diesel engine
a.Crankcase
b.Crosshead
c.Bedplate
d.Cylinder
e.Liner
81. Bedplate is seated on the ..........
a. Cylinder block
b. Crankcase
c. Engine frame
d. Girders
e. Foundation
82. What statement is not true regarding crankcase?
a.It is below the cylinder
b.It consist of upper and lower sections
c.It provides a sump for fuel oil
d.It encloses the crankshaft
e.Manholes on it allow access for maintenance
83. Cylinder head on a four-stroke engine contains.......
a.Air starting valve
b.Inlet valve
c.Exhaust valve
d.Fuel injector
e.All
84. What statement is not true regarding bedplate?
a.Bedplate supports the engine
b.It consists of cross and longitudinal girders
c.It is seated on the foundation
d.It must withstand the fluctiating forces during operation
e.It encloses the main bearing
85. The cooling medium for cylinder cooling circulates through
a.Jacket
b.Main bearings
c.Crankcase
d.Sump
e.Shafting
86. Which of the following parts is not a running part?
a.Piston
b.Crosshead
c.Cylinder
d.Exhaust valve
e.Camshaft
87. What part is exposed to the combustion directly
a.Piston crown
b.Piston skirt
c.Piston rod
d.Piston rings
e.Piston pin
88. Piston is connected to connecting rod by:
• Piston rod
• Piston head
• Piston pin
• Piston skirt
• Crosshead guide
89. The grooves on the piston are for:
a.Piston pin
b.Piston rod
c.Piston crown
d.Crosshead slippers
e.Piston rings
90. What has a direct contact with piston rings?
a.Liner
b.Camshaft
c.Crosshead
d.Crankshaft
e.Jacket
91. What statement is true about pistons?
a.Piston is generally cooledwith seawater
b.Piston moves axially
c.Piston is connected to the connecting rod by piston pin
d.Piston is only made of steel
e.Diesel engines use only trunk type pistons
92. What statement is not true regarding camshaft?
a. Camshaft is used to operate the fuel pump and exhaust valve
b. It rorates at the same speed with the crankshaft on four stroke engines
c. Camshaft is driven by crankshaft with the gear gear drive or chain drive
d. Camshaft has cams
e. The camshaft is driven by a cam gear
93. In two stroke crosshead engine, the piston is connected to
the crosshead by:
a.Crosshead slipper
b.Piston rod
c.Piston pin
d.Cam journal
e.Piston crown
94. ........is not a cooling system.
a.Piston cooling
b.Crankcase cooling
c.Lube oil cooling
d.Charge oil cooling
e.Pitch propeller cooling
95. The purpose of cylinder cooling is:
a. Maintaining the engine temperature at a certain level of operation
b. Retaining the piston temperature at constant speed
c. Making liner more slippery
d. Treating the fresh water before starting the engine
e. Reducing the crankshaft revolution speed
96. Receiving fuel on board the vessel is called as:
a.Storage
b.Seperation
c.Bunkering
d.Transfer
e.Service
97. Fuel transfer pumps are of:
a.Centrifugal type
b.Gear type
c.Positive dispalcement type
d.Axial flow type
e.Screw type
98. Fuel main is located:
a.On the bunkering station
b.On the storage tank
c.On the service tank
d.In the engine room
e.Underneath the cargo spaces
99. What parts are not lubricated on four stroke cycle
engines?
a.Main bearings
b.Crank pins
c.Piston pins
d.Crosshead guides
e.Liners
100. The lubricating oil temperature is controlled with a:
a.Thermostatic valve
b.Viscosity regulator
c.Heater
d.Cooler
e.Strainer
101. The lubricating oil is stored in the ........located at the
bottom of crankcase
a.Sump
b.Expansion tank
c.Drain tank
d.Lubricator
e.Steam heating coil
102. What is not a part of propulsion system
a.Propeller
b.Shafting
c.Main thrust block
d.Reduction Gear
e.Rudder
103. “Hub, blade, pitch”. The terms are related to:
a.Shafting
b.Rudder
c.Thrust block
d.Propeller
e.Sterntube
104. “Each blade is set into the boss and connected to the crosshead.”
What word cannot be used instead of the underlined word?
a. Linked
b. Attached
c. United
d. Slipped
e. Joined
105.Performance of a turbocharged engine can be improved by:
a. Decreasing valve over lap
b. Preheating
c. Aftercooling intake air
d. Preheating light fuels
e. Heating intake air
106. The drains from both effects in a low pressure evaporator have their pressures equalized in the:
a.Equalizer tank
b.Drain tank
c.Flash chamber
d.Air ejector condense
e.Fuel oil tank
107.Prior to port arrival, a diesel alternator ....., turbo alternator ....... And all the full away procedure should be done .....
a. Will have to be started/will be shut down/in reverse order
b. Does not have to be started/will have to be shut down/in reverse order
c. Will have to be started/will have to be started/in right order
d. Will have to be shut down/will have to be started/in reverse order
e. Doesn’t have to be shut down/will have to be shut down/in right order
108.When oil is heated, it becomes.......
a.Less viscous
b.Emulsified
c.More viscous
d.Vitrified
e.Not necessarly viscous
109.The instrument always used in conjunction with a salinity indicator
is the:
a.Pyrometer
b.Thermometer
c.Hygrometer
d.Hydrometer
e.Oxygen meter
110. ............is hardly the cause of a smoky diesel engine exhaust
a.Overload
b.Malfunctioned injector
c.Choked exhaust pipes
d.Inappropriated amount of fuel
e.Appropriated amount of fuel
111. When starting ballasting .....valve should be
opened last
a.Seacock
b.Pump discharge valve
c.Deck filling valve
d.Tank suction valve
e.None above
112. Fire detecting and extinguishing equipment is required on all ......
a.Cargo vessels
b.Passanger vessels on international voyage
c.Vessels over 150 feet in lenght
d.Vessels over 450 feet in lenght
e.Cruise boats
113. The lubricant is expected to have the qualities of .......
a.Preventing metal to metal contact
b.Causing metal to metal contact
c.Decrease friction
d.Decrease friction wear
e.All expect B
114..........Should be followed as a procedure, if it is necessary to pump
bilges while a vessel is in port
a.Pumping only if discharge is led to a shore tank or barge
b.Pumping only during the hours of darkness
c.Pumping only on the outgoing tide
d.Pumping only as much as is necessary
e.Pumping only the day hours
115. .........should be considered as a hazard on the propeller and a through examination and repair will be carried
out when the vessel is in dry dock
a. Bent blades
b. Signs of cracks on the blade edge
c. Deep pits and holes
d. Edge cracks
e. All above
116. Considering the fuel ignition quality is determined by .........
a.Cetane number
b. Diesel index
c. Calculated cetane index
d. Flash point
e. All except D
117. How often should the emergency diesel be run under load?
a.Once a year
b.Once a month
c.Once a week
d.At survey time only
e.At drydock
118. The main charecteristics of a diesel engine is:
a. Internal combustion engines; the fuel is burned external of the cylinders
b. Producing high power of energy
c. Either 2 or 4 stroke, fuel is burned inside the cylinder
d. Economical in compare with the steam engines, but hard maintenance
e. Fixed sequence of events within its unique type
119. On a diesel engine a freshwater heat exchanger is used rather than a
saltwater one to:
a.Maintain fuel oil temperature
b.Maintain lub oil temperature
c.Cut down on rust and corrosion
d.Keep the engine block from freezing in cold water
e.Maintain air temperature
120. The upper section of a piston is called the:
a.Land
b.Skirt
c.Crown
d.Plate
e.Disk
121. The suction control switch on the compressor is a .......
a.Thermal element
b.Thermostat
c.Pressure element
d.None above
e.All of above
122. The heat which is used to change a liquid to a gas or vapor is called latent
heat of...
a.Absorbtion
b.Fusion
c.Liquid
d.Evaporization
e.Fission
123. As freon leaves the expansion valve .........
a.Pressure increases – volume increases
b.Pressure decreases – volume increases
c.Pressure decreases – volume decreases
d.Pressure increases – volume decreases
e.Pressure increases – no change in the volume
124. An overheated bearing in the main propulsion unit is indicated by:
a. Bubbles in the sight glass
b. Sludge in the strainers
c. A high oil level in the sump
d. Low temperature of the lube oil leaving the bearing
e. High temperature of the lube oil leaving the bearing
125. Emulsification of oil will occur when mixed with:
a.Air
b.Water
c.Black oil
d.Ice cream
e.Oxygen
126. The liner which has no direct contact with the cooling water is what
kind of a liner
a.Wet
b.Dry
c.Integral
d.None of the above
e.Cooled with lubrication oil
127. What statement is not true regarding boilers
a. Boilers produce steam for machinery
b. Boilers are used for main propulsion plant
c. Boilers can be classified as fire tube and water tube
d. Boilers can be found on all motor vessels
e. Boiler feedwater is circulated by a feedwater pump in all boilers
128. A scotch marine boiler does not have:
a.Furnace
b.Manhole
c.Smoke tubes
d.Burner
e.Drums
129. What statement is not true regarding tubes of a fire tube boiler
a.All the tubes are made of heat-resistant metal
b.All the tubes are surrounded by water
c.All the tubes immersed in water
d.All the tubes are mounted vertically
e.The hot gases pass through these tubes
130. What gives the characteristic of fire tube boilers
a.Fire tube boilers have less water capacity
b.Fire tube boilers are used for low pressure
c.Fire tubes boilers are more conductive
d.Fire tube boilers can steam up in a short time
e.Fire tube boilers are used on oil tankers
131. “Diffuser plate, atomizer, air register” These terms are related to:
a.Steam drum
b.Header
c.Burner
d.Downcomer
e.Water drum
132. The moisture is removed from the steam by means of
a.Downcomer
b.Generating tubes
c.Water drum
d.Steam drum
e.Waterwall tubes
133. The purpose of attemperator is:
a.To remove the impurities from the feedwater
b.To reduce the temperature of superheated steam
c.To supply heat recovery
d.To remove non-condensable gases from boiler
e.To remove all moisture from the steam
134. What is used for reducing the temperature of steam for auxiliary
machinery?
a. Superheater
b. Deaerator
c. Soot blower
d. Atomizer
e. Desuperheater
135. Non-condensable gases are removed from the condenser by:
a.Air heater
b.Air ejector
c.Desuperheater
d.Attemperator
e.Deaerator
136. The function of a deaerator is :
a.Acting as a storage tank to keep water level
b.Keeping a constant pressure on the feed system
c.Keeping water free of air
d.Acting as a contact feed heater
e.all
137. What statement is not true ?
a.Soot blower keeps clear of combustion residues
b.De-aerator keeps water free of air
c.Air ejector removes non-condensable gases from economizer
d.Superheater removes the moisture from steam.
e.Attemperator reduces the temperature of superheated steam
138. “Raw water is not pure enough to use in boiler”
What word can be exactly used instead of underlined word?
a. Treated
b. Untreated
c. Dilute
d. Dissolved
e. Salt
139. The dissolved salts in feedwater may cause:
a.Reduction in heat transfer by scale formation
b.Hardness
c.Caustic cracking
d.Tube failure from overheating
e.all
140. Caustic cracking is the result of:
a.Foaming
b.Priming
c.Excess of alkaline salts
d.Suspension
e.Leakage
141. pH Value is achieved by adding:
a.Hydrazine
b.Coagulant
c.Sulphure
d.Chloride
e.Magnesium
142. Corrosion within boiler is prevented by:
a.Polymer treatment
b.Adding anti-foam
c.Deaeration
d.Amine treatement
e.Adding coagulants
143. Scale and sludge formation is prevented by:
a.Neutralizing amines
b.Filming amines
c.Polymer treatment
d.Keeping pH value
e.Deaeration of the boiler by hydrazine
144. “The dissolved gases adhere to the heating surfaces”What word can be exactly used
instead of underlined word?
a. Corrode
b. Stick
c. Contaminate
d. Crack
e. Suspend
145. ........is the first to do when securing an AC generator.
a.Tripping the generator circuit breaker
b.Switching the voltage regulator to manual
c.Decreasing the field excitation to minimum
d.Reducing the load on the unit
e.Increasing the load on the unit
146. The system used for breaking scale from the evaporator coil while the
evaporator is in operation is called:
a.Recirculating
b.Blowing down
c.Craking off
d.Dumping
e.None of above
147. This gauge measures both inlet and outlet pressures of a
strainer
a.A compound gauge
b.A duplex gauge
c.A biogauge
d.A pressure/vacuum gauge
e.None of the above
148. In a four stroke engine 2 revolution of the crank is
completed within the angle of.....
a.720°
b.360°
c.180°
d. 90°
e. 45°
149. What will happen to a small diesel engine that is equipped with an “auto
type” thermostat if the bellows develop a hole in it?
a. The engine will overheat
b. The engine will remain cold
c. The engine will remain not start
d. The cooling water will “by pass” the engine
e. None of the above
150. ..........are the common parts within the 2 and 4 stroke diesel
engines
a.Piston, valves, cylinder, fuel injector
b.Crankshaft, crosshead, cylinder
c.Turbocharger, piston, gudgeonpin, cylinder
d.Crankshaft, connecting rod, pistons
e.Cylinder, connecting road, pistons
151. If the flow of water from a centrifugal pump is stopped by closing
the discharge valve with the pump running
a.The relief valve will open
b.The water pressure will stabilize at shut off head
c.The water pressure will tend to rise continously
d.The driver will be over loaded
e.The water temperature will tend to decrease continously
152. Which factor below is not the cause of vibration and noise
in turbines
a.Unbalance
b.Distortion of casing
c.Loose couplings
d.Tight couplings
e.Any above
153. All refrigerator compressor valves are opened and closed
via .......
a.Springs
b.Camshaft
c.Pressure differantial
d.A or C
e.None above
154. Flashlights used aboard tankers must be ........
a.Waterproof
b.Of the three cell type
c.Approved by the board of fire underwriters
d.All above
e.A and C
155. When distilling salt water the cooling-water discharge from the distiller is fed back
to the evaporator as feedwater:a. To cut down on the amount of cooling water
needed
b. To prevent an excess amount of cooling water from being discharged to the bilges
c. To supply hot water to the evaporator for more economical operation
d. To supply sufficient amount of sea water
e. None of the above
156. A spring bearing on the line shaft is lubricated by:
a.The lub oil gravity tank
b.Water leak off from the stern tube
c.An oil ring and scraber
d.The main lube oil pump
e.Any above
157. Which of the following actions should you take to correct a low condensing pressure in a refrigeration system?
a.Purge the condenser
b.Remove refrigerant
c.Adjust the thermostatic expansion valve
d.Increase the compressor speed
e.Add refrigerant
158. Pre-ignation can be caused by ........ in an operating diesel
engine
a.Excessively late fuel injection
b.Oil in the air charge
c.Water in the fuel
d.Injection continuing after the fuel charge is ignited
e.None above
159. A ball bearing will overheated if:
a.Completely full of grease
b.Half full of grease
c.In use for a long time
d.Operated at high speed
e.Operated at medium speed
160. One horsepower equals.....
a.1000 watts
b.746 watts
c.100 watts
d.940 watts
e.786 watts
161.Emergency generators are placed ........
a.Near the machinery spaces
b.Above the bulkhead or freeboard deck whichever the higher
c.Midships near the engine room casing
d.Above the deep load line
e.None above
162. Which one is not identical with the characteristic of the construction
of a 2-stroke diesel engines
a. Instead of valve holes, ports are installed
b. A cycle is completed in 2 strokes of the piston
c. Produce high power in compare with 4 stroke engines
d. The maintenance is simple
e. A cycle is completed in 2 revolution of the crankcase
163. Which of the following is not one of the parts of D/G overhaul?
a.Valve rotator
b.Valve spindle
c.Intake valve
d.Valve seat
e.Starting valve
164. The purpose of an evaporator is to ........
a.Transmit the latent heat of fusion
b.Transmit the latent heat of evaporation
c.Absorb the latent heat of evaporation
d.Asorb the latent heat of fusion
e.Any above
165. Which of the following is not used for oil seperation
a.Settling tank
b.Filters
c.Purifier
d.Centrifuge
e.incinerator
166. Which statement is not true concerning centrifuges
a.Centrifuges are used for oil seperation
b.A centrifuge contains a bowl and conical discs
c.Centrifuges make use of the centrifugal force
d.Centrifuges are hydrolic-driven devices
e.Centrifuges are used to remove coarse particals and waters
167. Which of the following oil seperation units makes use of
gravity
a.Clarifier
b.Purifier
c.Settling tank
d.Filter
e.Centrifuge
168. Which statement is not true regarding the compressed air?
a. Air compressor supply the compressed air
b. The air at the pressure of 20-30 bar is required to start the engine
c. The compressed air is stored in air receiver
d. Compressed air is used only for engine starts
e. The pressure of control air is 7 bars
169. What is not a component of two-stage air compressor
a.Suction valve
b.Throttle valve
c.Cooler
d.Discharge valve
e.Drain valve
170. What statement is not true regarding air receivers?
a.The pressure of air is 20-30 bar
b.The receiver must store enough air for twelve engine starts
c.The pressure inside is controlled by a pressure gauge
d.The air receivers are self-cleaning devices
e.Drain valves are fitted to drain impurities
171. Air receivers are not fitted with;
a.Pressure gauge
b.Reducing valve
c.Drain valve
d.Relief valve
e.Strainer
172. Air receivers are protected against high pressure by;
a.Pressure gauge
b.Reducing valve
c.Relief valve
d.Drain valve
e.Silencer
173. Using a semi- permeable to retain salt and impurities from
sea water is:
a.Distillation
b.Evaporation
c.Vaporization
d.Condensation
e.Reverse osmosis
174. Seawater is pumped into fresh water generation unit by:
a.Booster pump
b.Ejector pump
c.Distilate pump
d.Sanitary pump
e.Transfer pump
175. What process is not related to fresh water generation?
a.Reverse osmosis
b.Distilation
c.Evaporation
d.Compression
e.Condensation
176. The feed water is evaporated in the evporator by
means of :
a.Brine ejector
b.Condenser
c.Ejector pump
d.Air ejector
e.Cylinder cooling water
177. What part is not included in the refrigeration system?
a.Receiver
b.Condenser
c.Ejector
d.Cold rooms
e.Thermostatic expansion valves
178. The evaporating pressure is maintained constant in the
refrigeration system by:
a.Evaporator
b.Cooler
c.Receiver
d.Compressor
e.Thermostatic expansion valve
179. Ammonia is extremely toxic” What word can replace the
underlined word
a.Harmless
b.Poisonous
c.Perishable
d.Raw
e.Corrosive
180. Air conditioning system does not involve:
a.Heating the air
b.Ventilating
c.Compressing the air
d.Cooling the air
181. What system is directly related to the crew’ s working
conditions?
a.Air compression
b.Bilge
c.Air conditioning
d.Fresh water generation
e.Refrigeration
182.To prolong the storage life of foodstuff by lowering
temperature is:
a.Air conditioning
b.Evaporation
c.Refrigeration
d.Condensation
e.Distilation
183. What statement is not true concerning centrifugal pump?
a.Centrifugal pumps are self-priming
b.Centrifugal pumps may be classified as single stage and multi stage
c.They have rotating impeler keyed to shaft
d.Centrifugal pumps are mostly driven by electric motors
e.Their casing have a suction inlet and discharge outlet
184. What statement is not true concerning reciprocating pump?
a.They are positive displacement pumps
b.They may be used as boiler feed pump, bilge or fuel oil pump
c.They are designed as single acting or double acting
d.They are very common on motor ships
e.Their pumping action is done by a ball
185.Trawlers, whaling ships and purse seiners are in the category
of.........
a.Pleasure crafts
b.Fishing vessels
c.Passenger ships
d.Naval ships
e.Excursion ships
186. The sequence of events in a cycle within 4 stroke diesel engine is:1.The piston is forced down at BDC (Bottom dead
center) exhaust valve opens2.The piston is at the top of its stroke, TDC(Top dead
center), inlet valve opens, fresh air is drawn3.Pressure is high in the gases4.Fuel is injected as the piston is reaches TDC, to start the combustion5.Inlet valve opens, fresh air drawn as the piston moves down6. At the bottom of the stroke BDC inlet valve closes and the air in cylinder is compressed as the piston rises
a. 2-5-6-4-3-1
b. 2-5-6-4-1-3
c. 2-6-5-4-3-1
d. 5-2-4-6-3-1
e. 5-2-6-4-1-3
187. An overspeeding diesel engine could best be stopped by:a. Disconnecting the battery cables from the
starting motor
b. Draining the cooling water
c. Draining the hydrolic fluid from the governor sump
d. Blocking the flow of cooling air to the radiator
e. Blocking the air intake and securing the fuel supply
188. The cylinder cover is tightened against liner with studs.
What word can be used instead of the underlined word?
a. Removed
b. Replaced
c. Screwed
d. Slackened
e. Supported
189. The motion of the piston in the cylinder is;
a.Rotary
b.Axial
c.Bending
d.Fluctuating
e.Reciprocating
190. “The intake valve is open and exhaust valve is closed. The air is drawn into cylinder while the piston
is moving downward” defines
a. Power stroke
b. Compression stroke
c. İntake stroke
d. Exhaust stroke
e. Combustion
191. In two stroke engines , if the engine has exhaust valve(s), it is a .............scavenged engine
a.Cross flow
b.Non-flow
c.Overflow
d.Loop
e.uniflow
192. Having an unstarting compressor must take you think the possibility of ..........(?)
a.No charge of liquid in the system
b.Closed selenoid valves
c.A and b
d.None above
e.Having sufficient amount of air
193. The pump type using a piston or plunger to remove the fluid;
a.Rotary vane pump
b.Gear pump
c.Reciprocating positive displacement pump
d.Screw pump
e.Centrifugal pump
194. To remove the impurities and water droplets from
oil, ...........are used on board a ship
a.Purifiers
b.Clarifiers
c.Centrifuges
d.Seperators
e.All
195. ........is the control of temperature and humidity in a space together with the circulation, filtering and refreshing of the air.
a. Refrigeration
b. Air conditioning
c. Ventilation
d. Cooling
e. Circulating
196. While making your rounds, you notice the main lube oil temperature is higher than normal. To remedy this situation, you should:a. Speed up the main lube oil pump
b. Open the lube oil cooler seawater inlet valve wider
c. Throttle in on the lube oil cooler seawater discharge valve
d. Close the lube oil cooler seawater discharge valve wider
e. Open the lube oil cooler seawater discharge valve wider
197. .......the fire pumps are at work.What word can be used instead of underlined part?
a.İnoperable
b.Operable
c.In operation
d.Arranged
e.Out of order
198. Oily water seperators are used to seperate oil from bilge water........
The bilge water is pumped........
a. After / overboard
b. Before / overboard
c. Before /inboard
d. After / out
e. When / aboard
199. On most diesel engines, the governor controls the speed by:
a.Controlling the amount of fuel injected into the cylinders
b.Varying the speed of the turbocharger
c.Adjusting the compression ratio
d.Changing the timing of the fuel injection camshaft
e.Changing the timing of the exhaust valves
200. What word is not related to cargo handling equipment?
a.Filler
b.Derrick
c.Hoisting
d.Jib
e.Crane
201. Any electric motor can be constructed to be ........proof.
a.Short
b.Ground
c.Explosion
d.Overload
e.A and b
202. In the incident of oil fire ...........
a. Get water on deck
b. Open steam or Co2 smothering system to cargo holds
c. Close off all ventilation, blowers, doors etc.
d. Open Co2 smothering system to cargo holds
e. All above
203. Which one is not treated on board?(?)
a.Sewage
b.Feed water
c.Fresh water
d.Lube oil
e.Balast water
204. When the seperated oil is burnt by an ......., the application is
recorded in Oil Record Book.
a.Oily water seperator
b.Ejector
c.Incinerator
d.Chlorinator
e.Aeration chamber
205. If one cylinder was getting more fuel then others the effect will be .........(?)
a. That cylinder’s being overloaded
b. The exhaust valve’s being overheated
c. Average compression
d. Incomplete combustion
e. Complete combustion
206. The removal of contaminating impurities from
lubricating oil will ......
a.Increase engine wear
b.Decrease engine wear
c.Increase possible breakdowns
d.Decrease possible breakdowns
e.B ve d
207. A propulsion diesel engine is normally shut down by ........
a.Shutting off the air supply
b.Overspeeding the engine
c.Securing the fuel supply
d.Securing the ignition system
e.All above
208. Sediment collects in a tubular purifier:
a.On top cover
b.In drain line
c.On sides of bowl
d.On the discs
e.None of above
209. “Water hammer” is caused by:
a.Hitting water pipe with hammer
b.Too much water in pipe line system
c.Water in steam line
d.Steam in water lines
e.Few amount of water in pipe line system
210. The valve which is always partially open when the evaporator
is in operation is the:
a.Vapor valve
b.Continous blowdown valve
c.Bottom blowdown valve
d.Surface blowdown valve
e.Fresh water valve
211. What kind of bolts would you use on a saltwater line?
a.Cold rolled
b.Brass
c.Cast iron
d.Plastic
e.All of the above
212. Studs and nuts intended for use in main steam line flanges and fittings are marked with an “H” or a “T” to show they are:
a. Heat resistant
b. Hard finished
c. Half threated
d. Corrosion resistant
e. Fire proof
213. An advantage of aluminium pistons compared to cast iron
pistons is:
a.Greater high temperature strenght
b.Greater weight per cubic meter
c.Increased resistance to wear
d.Low temperature strenght
e.Better heat conductivity
214. What harmfull consequence can result from
sludge in the lube oil system of a trunk piston diesel engine?
a.Clogged oil pump section screens
b.Increased oil temperature
c.Stuck piston rings
d.Any of the above
e.None of the above
215. The air supplied to the cylinder by a turbocharger is often
reduced in volume by a/an
a.Air compressor
b.Diffuser
c.Filter
d.Venturi
e.Aftercooler
216. Insufficient refrigerant in a refrigeration plant on board a
ship may result in:
a.High discharge pressure
b.Frosting of the crankcase
c.High temperature of the overboard water
d.Low section pressure
e.Low temperature of the sea water
217. The thermostatic expansion valve of R-22 or R-134a
refrigeration system controls the:a. Back pressure in the evaporator coils
b. Temperature in the refrigerated space
c. Superheat in the refrigerant leaving the evaporator
d. Refrigerant pressure in high side
e. Temperature in the condenser
218. Which valve is normally closed when charging an R-22 or R-134a refrigeration system through the
high side?a. The thermal expansion valve
b. The dehydrator inlet valve
c. The suction line valve
d. Both the thermal expansion valve and dehydrator inlet valve
e. The liquid line king valve
219. When operating at high or low speed in the use of nozzles in a turbine, attention and precaution
must be taken that .......a. The nozzles in use should be wide open
b. Operation with a few nozzles as it’s economical
c. The nozzles not in use must be tightly closed
d. All above
e. Only a and b
220. ..........protects the pump shafts from erosion, corrosion and wear
a.Wearing rings
b.Renewable sleeves
c.A hardened metal coating
d.İnternally flooded lantern rings
e.Lantern rings
221. An electric heater built into the cylinder water jacket would be used
to:a. Raise lube oil viscosity for easier starting
in cold water
b. Increase air inlet temperature
c. Increase compression ratio
d. Increase jacket water temperature for easier starting in cold weather
e. Heating compressed air
222. A cracked cylinder head on a diesel engine could be indicated by:
a.Excessive lube oil consumption
b.Water draining from the fuel leakoff valves
c.Excessive fuel oil consumption
d.Excessive cooling water consumption
e.Combustion gases venting at the expansion tank
223. “manometer” measures:
a.Air pressure
b.Steam pressure
c.Oil pressure
d.Water pressure
e.Oil temperature
224. In a 2 stroke engine each revolution of the crank is completed
within the angle of .....
a.360º
b.180º
c.720º
d. 90º
e. 45º
225. When does a two stroke cycle diesel engine produce a power stroke in each cylinder
a.Once in every 2 revolutions of the crankshaft
b.Once for every 4 stroke of the piston
c.Once for every 2 stroke of the piston
d.Directly after the exhaust stroke
e.None of the above
226. A steam turbine has curved blades. What word can be used the
opposite of the underlined word?
a.Straight
b.Flat
c.Sharp
d.Smooth
e.Vertical
227. Which of the followings is not one of the qualities of the governor?
a.The main control device on the engine
b.Controls the engine speed when the power is required to change
c.The supplementery control device on the engine
d.Can be adjusted automatically
e.Made up speed sensing arrangement and hydrolic unit
228. “The intake valve is open and exhaust valve is closed. The air is drawn into the cylinder while the
piston is moving downward”defines;
a.Power stroke
b.Compression stroke
c.İntake stroke
d.Exhaust stroke
e.Combustion
229. All diesel lubricating system must:
a. Have a forced feed mechanical lubricator
b. Prevent oil fog in the crankcase to avoid crankcase explosion
c. Provide oil for cooling the piston and cylinder wall
d. Provide a film of oil between the piston and cylinder wall
e. None of the above
230. The main components of crankshaft assembly are webs, pins
and journals. What word can be used instead of the underlined
word?a. Purposes
b. Sides
c. Parts
d. Types
e. Means
231. What is not a rotary pump type?
a.Screw
b.Gear
c.Lobe
d.Vane
e.Reciprocating
232. ...... Are not self-priming pumps
a.Screw pumps
b.Reciprocating pumps
c.Gear pumps
d.Centrifugal pumps
e.Rotary positive displacement pumps
233. Any device used to regulate or stop the flow of liquid in a piping system is:
a.Pump
b.Valve
c.Ejector
d.Separator
e.Heat exchanger
234. .......is not a valve type?
a.Relief valve
b.Stop valve
c.Throttling valve
d.Check valve
e.Return valve
235. Metal made by combining two or more methalic elements is:
a.Monel
b.Alloy
c.Cast
d.Forged
e.Malleable
236. Which of the following valve types is not a stop valve?
a. Ball valve
b. Globe valve
c. Relief valve
d. Butterfly valve
e. Gate valve
237. What statement is not true regarding butterfly valves?
a. Butterfly valves are stop valves
b. Butterfly valves are small, quick-acting valves
c. Butterfly valves can be used for throttling
d. Butterfly valves can be uesd in water systems and lube systems
e. A spherical disc is used open and close the valve
238. To control the supply of expandable fluids such as
compressed air, steam, a .....is used
a.Cock
b.Stop valve
c.Throttling valve
d.Relief valve
e.Drain valve
239. To discharge excess pressure in a piping system, a .....used
a.Ball valve
b.Stop valve
c.Relief valve
d.Throttle valve
e.Check valve
240. What associate is not true?
a.Air conditioning-cold room
b.Oil seperation – clarifier
c.Pump – positive displacement pump
d.Valve – non-return valve
e.Fresh water generation - evaporator
241.Marine electrical equipment are:
a.Generators
b.Motors,
c.Batteries,
d.Switchboards,
e.all
242. The machine that generates electrical energy is:
a.Generator,
b.Electric motor,
c.Battery,
d.Transformer,
e.rectifier
243. The machine that converts the electrical energy into mechanical energy is a:
a.Generator,
b.Motor,
c.Armature,
d.Transformer,
e.stator
244. Which of the following parts is not of a generator?
a.Rotor,
b.Stator,
c.Flywheel,
d.Winding,
e.Armature
245. What part of generator is not rotating?
a.Rotor,
b.Armature,
c.Rotorshaft,
d.Slip rings,
e.stator
246. The parts of generator that connect the high output voltage to
the external circuit are:
a.Coils,
b.Rotors,
c.Slip rings and brushes,
d.Stators,
e.Armatures
247. What cools the generator by dissipating heat in
the generator frame?
a.Rotor assembly,
b.Stator assembly,
c.Brushes,
d.Fan assembly,
e.Coils of wire
248. Which of the following devices are loads?
a.Alternator,
b.Wires,
c.Distribution panel,
d.Motor,
e.Coil
249. What is a part of marine electrical distribution?
a.DC motors,
b.Shaft generators,
c.Alternator,
d.Emergency switchboard,
e.AC motors
250. What statement is not true regarding switchboards?
a. Switchboards distribute electric power,
b. There are feeders that extend from switchboard to the distribution panels,
c. Switchboards are divided into sections by busbar isolators,
d. Switchboards receive power directly from transformer,
e. Switchboards are connected to the panels and circuits
251. What is used to seperate operating electrical equipment from
the rest of the electric system
a.Busbars,
b.Emergency switchboard
c.Batteries,
d.Branch circuits,
e.Circuit breakers and fuses
252. Voltage generated by an alternator is reduced by:
a.Fuse,
b.Circuit breaker,
c.Batteries,
d.Flywheel,
e.Transformer
253. The voltage generated by an alternator is:
a.110 V.,
b.440 V,
c.220 V,
d.680 V,
e.120 V.
254. What statement is true regarding DC motors?
a. DC motors are more common than AC motor,
b. DC motors are easy to maintain,
c. DC motors are less expensive than AC motors,
d. DC motors have the constant speed characteristic,
e. DC motors run on the principles of attraction and repulsion of magnetism
255. What statement is not true regarding AC motors?
a. AC motors consist of two main assemblies : rotor and stator,
b. Rotors in an AC motor are turned by magnetic field,
c. The rotating field in an AC motor induces electromotor force,
d. AC motors operate on direct current,
e. Single-phase AC motors are also called squirrel cage motors
256. What can be a source of electric power?
a.An electric motor,
b.A fuse,
c.A battery,
d.A control panel,
e.A rotor.
257.“electrolite, anode, electrode”.The terms are related to a:
a.Cell,
b.Fuse,
c.Coil,
d.Pole,
e.Stator
258. What is the solution that reacts with the electrodes?
a.Battery,
b.Electrolyte,
c.Cell,
d.Anode,
e.Lead.
259. A lead-acid battery of 6 cells can give the voltage of;
a.2,2 V,
b.7 V,
c.12 V,
d.1,4 V,
e.6 V.
260. What statement is not true regarding electrolyte?
a. The electrolyte reacts with the electrodes
b. The electrolyte provides a path for electron flow,
c. It may be a salt, an acid, or an alcaline solution,
d. Electrolytes are non-conducting materials,
e. It can be a liquid or dry substance.
261 ......is a process, in which the temperature of a space on whatever take place in, is reduced below that
of their surroundings
a.Refrigeration,
b.Air conditioning
c.Ventilation,
d.Heating,
e.freezing
262. Under normal operational conditions, the rudder is
hydraulically locked unless....
a. The manual trick wheel is engaged for steering,
b. The pump is off stroke,
c. A normal rudder order is given by the control system,
d. An electric power failure occurs at the steering gear,
e. A and B
263. Static electricity is most often produced by.......
a.Pressure,
b.Heat,
c.Magnetism,
d.Friction,
e.Motion.
264. When vacuum is lost on a turbo generator the trip is actuated
by........
a.Sentinel valve,
b.Back pressure,
c.Slugs of water,
d.Overspeed trip,
e.A and B
265. Supposing a fire caused by short electric circuit within the
equipments is categorized as a ...... Fire and will be extinguished
via ......a. Class A / Foam,
b. Class C / Chemical powder,
c. Class C / Co2
d. Class B / Foam,
e. Class A / Chemical powder
266. .......is used as a fire extinguisher in case of fires resulted
from electrical equipment.
a.Soda acid,
b.Co2,
c.Sand,
d.Foam,
e.C and D
267. With a reciprocating pump, failure to deliver liquid may be
caused by.....
a.Pump not being primed,
b.Discharge head too high,
c.Liquid plunger packing worn,
d.Any of the above,
e.Only A and B
268. Which of the following isn’ t a component of a water tube
boiler?
a.Burner,
b.Header,
c.Downcomer,
d.Steam drum,
e.Booster pump
269.Any automatic sprinkler, fire detection and fire alarm system
shall be capable of immediate operation at all times and no action by
the crew shall be necessary to set it in operation. Each section of
sprinklers shall include means for giving a visual and audible alarm
automatically whenever any sprinkler comes into operation. Sprinkler
shall be grouped into seperate sections, each of which shall contain
not more than 200 sprinklers. Each section shall be capable of being
isolated by one of stop valve only. A gauge indicating the pressure in
the system shall be provided at each section stop valve and a central
station. The sprinklers shall be resistant to corrosive by marine
atmosphere. In accommodation and service spaces the sprinklers
shall come into operation within the temperature range from 68°C to
79°C. A list or plan shall be displayed at each unit and suitable
instructions for testing and maintenance shall be available.
Sprinklers shall be placed in an overhead position to maintain an
avarage application rate of not less than 51 m²/min. over the area
covered by sprinklers. According to the passage, it isn’t true that;
a. The sprinklers can be affected by marine atmosphere,
b. They will be in an overheaded position to maintain the average application,
c. The pressure in the system is displayed by a pressure gauge,
d. Sprinkler system is used either fixed or mobile on board,
e. The system shall be divided into sections
270. “The quantity of oil in seperated water is controlled by a control unit” what sentence below has the same
meaning?
a.Control unit controls the oil quantity and seperate it,
b.The quantity of oil is seperated and controlled by control unit,
c. The oil quantity in water is seperated by control unit,
d.Control unit controls the oil quantity in seperated water,
e.Seperated water in oil is controlled by control unit.
271. The turbocharger of an auxiliary diesel engine is most
effected by:
a.Air inlet manifold pressure,
b.Engine speed,
c.Exhaust temperature,
d.Engine load,
e.None of the above
272. Deck machinery is used for;
a.Mooring,
b.Seamenship applications,
c.Anchoring,
d.Cargo handling,
e.all
273. ......is not a drive type used for deck machinery.
a.Electric,
b.Hydrolic,
c.Hydrolic-electric,
d.electric,
e.Electronic.
274. ...... İs not a component of a mooring winch.
a.Warp end,
b.Spur gear,
c.Motor,
d.Friction break,
e.Drum.
275. Wildcat is a component of;
a.Capstan,
b.Drum,
c.Windlass,
d.Derrick,
e.Mooring winch.
276. The function of wildcat is;
a. Gripping the anchor chain,
b. Stopping the slipping of anchor
c. Handling the mooring line,
d. Hoisting the jib,
e. Warping the lines.
277. What is not included in anchoring arrangement?
a.Anchore chain,
b.Chain locker,
c.Jib,
d.Hawse
e.Windlass
278. The height of derrick is fixed by;
a.Mooring line,
b.Jib,
c.Topping wire,
d.Forward line,
e.Luffing wire.
279. What statement is not true regarding derricks?
a.Derricks are operated by winches,
b.Derricks will be designe fixed or slewing,
c.Derricks are fitted on deck,
d.Derricks are used only for cargo handling,
e.Derricks can rotate through 360°
280. What do you understand by “hoisting”?
a.Rotating the crane,
b.Slewing the derrick,
c.Lowering the jib,
d.Letting out the line,
e.Lifting the load
281. What statement is not true regarding cranes?
a.Cranes can rotate through 360°,
b.Cranes are more modern cargo handling devices,
c.Cranes can lift up to 50 tonnes,
d.Cranes are driven by cargo winches,
e.Cranes are located on deck for cargo handling
282. “jib, hatch, derrick”. The terms are related to;
a.Mooring,
b.Anchoring,
c.Steering,
d.Cargo handling,
e.Berthing.
283. Watertightness of the closed hatch covers is
accomplished by;
a.Roller,
b.Jointing strip,
c.Spindle,
d.Hinge,
e.Capstan.
284. Bow thrusters;
a. Are not used for improving manoeuvring capability,
b. Are not controlled by bridge,
c. Are not located at the end of ship,
d. Do not have any motor drive,
e. Do not enable the ship more manoeuvrable.
285. What statement is not true regarding ram type transmission
unit in steering system?
a. The rams operate the tiller,
b. Each cylinder has a variable delivery pump,
c. The tiller is keyed to the rudder stock,
d. The slipper ring is attached to the telemeter unit,
e. The unit is electric-driven
286. The Ward-Leonard system is;
a.An electric-driven cargo handling method,
b.A hatch cover folding system,
c.A hydraulic steering system,
d.An electric-driven steering system,
e.An automatic watertight door system.
287. I-Tiller, II-Rudder, III-Jib, IV-Hatch Coaming, V-Ram
the components of steering system are;
a.I-II-IV
b.III-V,
c.I-II-V,
d.I-IV-V,
e.III-IV-V
288. Steering system keeps the ship on the steady course.
What word can be used instead of the underlined word?
a. Constant,
b. Variable,
c. Shifting,
d. İnappropriate,
e. Available.
289. ...... İs not included in the steering gear.
a.Rudder,
b.Propeller,
c.Telemeter,
d.Transmitter,
e.Rudder actuator
290. “The movement of rudder is accomplished by means of the
transmission system.”What words can replace the underlined
words?
a.Motion-achieved,
b.Resistance-supported,
c.Gear-handled,
d.Action-suspended,
e.Motion-gripped.
291. “The control equipment conveys the signal of desired
rudder angle from bridge”What word can be replace the
underlined word?
a. Reflect,
b. Consist,
c. Transmit,
d. Actuate,
e. Receive.
