• Question 1 is a measure of

altitude computed by sensing the Static

Pressure.

A Geometric Altitude

B Pressure Altitude

C Geopotential Altitude

D Density Altitude

• Question 2 is the measure of the temperature at the surface of the aircraft.

A Ambient Temperature

B Standard Temperature

C Static Temperature

D A&B

• Question 3 Geometric Altitude is the physical distance

Of the aircraft from sea level. This measurement

is dependent of the pressure effects.

A True

B False

• Question 4 The pressure ratio() is 1 when

A Pamb > PSeaLevel

B Pamb = PSeaLevel

C P2amb / PSeaLevel

D Pamb=PSeaLevel

• Question 5 The Barometric Pressure

at a hypothetical reference point known

as 'mean sea level' that has an ambient

temperature of 15 F and is an ambient

pressure of 29.92 inHg.

A True

B False

The Base Standards(ISA)

Parameter Value Units

Pressure 2,116.22 lbs/ft2

Density 0.002377 Slugs/ft3

Temperature 59ºF=15ºC=288.16ºK=518.688ºRFahrenheit, Celsius, Kelvin, Rankine

Gravity 32.1741 ft/sec2

Gas Constant 53.35 ft/ºR

Direction (Question 6-10)

In the base standards (ISA) condition, calculate followings.

-Temperature Ratio=Tambient / Tsea level = θ = 1-(6.8753*10-6)*Altitude

-Pressure Ratio=Pambient / Psea level = δ = (1-6.88*10-6*Altitude)5.26

A. 15.0 ºC

C. -34.5 ºC

B. -15.6 ºC

D. -60.0 ºC

Question 6Standard Ambient Temperature (ºC) on the altitude 25,000ft.[Tip: Degrees C=Degrees R*(5/9)-273.15]

A. 2,116.22

C. 472.68

B. 2,193.93

D. 784.15

Question 7Standard Ambient Pressure (lbs/ft2) on the altitude 25,000ft.

A. 1.132

C. 0.765

B. 0.876

D. 0.674

Question 8Temperature ratio (θ) on 18,000ft height.

A. 19,690 ft

C. 23,500 ft

B. 17,470 ft

D. 25,420 ft

Question 9When the ambient temperature is -24 ºC, what is the altitude?

[Tip: Degrees R=(Degrees C+273.15) *(9/5)]

A. 8,477

C. 10,074

B. 9,206

D. 13,900

Question 10When the ambient pressure is 1,500 lbs/ft2, what is the altitude?