NPGCL Today Interview Questions:1 ) Name the Equipment Installed in Switch yard?( Transformers, Isolators, CB, CT,PT, Lightning arrester, shunt Reactor, Protective Relays etc.)2 ) What is Lightning Arrester?(A lightning arrester is a device used on electrical power systems to protect the insulation and conductors from the damaging effects of lightning.)3 ) What is the use of choke in tube light?(The choke has two main functions. It causes the tube to ignite and it controls the current through the tube when it is ignited.)4 ) Filament of Bulb is made of?(Tungsten)5 ) What is power Triangle?6 ) What is Reactive Power?7 ) what is vector Diagram of Transformer?8 ) Two transformers having different vector group can share power?9 ) what is CCVT?10 ) What are CT,PT and Arcing Horns?11 ) Purification level of Hydrogen for Generator Cooling?12 ) What happened if hydrogen is mixed with air?1-Ap kahan sy ai ho?2-Bachelor in which discipline?3-About internship, technical experience.4-Domicile district?5- Some discussion about nearby power plant.6-Types of motors?7-Why we use 3-phase?8-Uses of CT and PT?9-Main cause of electric shock? voltage/current10-What is voltage and current?11- What is potential difference?Ok thanks Few more question that I remembered and were asked form other candidates at the Centre.12-Difference between arc and flashover13-What is universal motor?14-How synchronous motor starts15-What is compound motor?16-Question about use of impedance relay17-Corona effect vs Skin effect18-Effect of HV EHV lines on wireless communication19-Difference between isolator and CB?When they call, Enter.6 to 7 people sitting.Verify your name.Please Introduce your Self.Koi Internship ki hy? ? Yp, In some Hydro Power project.Kn c Turbine lagi hoi hy udr.Generator kn sa laga hoa hy.Capacity kitni hy?AVR kia hota hy.Generator k exciter ko DC kahan sy dety hn.Trnasformer k parts kn kn sy hn.Oil kis liye use hota hy Transformer main?Buch'holz Relay kia hoti hy kis trha, kia kaam krti hy.Silica Gel kyun use hoti hy.Silica Gel Moisture kidr sy Extract krti hy.Commulative aur Differential Generator main kia faraq hota hy?An other guy with Electronics Degree was asked about Motors ki types.Operation k lihaz sy Input k lihaz syConstruction k lihaz sy.AM aur FM main difference.Frequency Hopping kia hoti hy?Microwave transmission and Impedence matching what is surge arrestor? 2 types of cb most used and which one is best. 3 types of DC motor. What is electrical traction? Which motor used. Which motor is universal motor. 4 what is solenoid. 5 string efficiency? 6 f=50hz , 2 poles speed? 7 purpose of choke. 8 battery rating.CoronaCircuit breakers, types,testsIsolatorsCT,PTDc generators and typesTransformer and generator cooling methodsVoltage ,resistance.. inductance , capacitance Induction motorDc motors and typesInrush current