Electrical Engineering Interview Questions
Questions Answers Views Company eMail

How to design the no. of ceiling fans required in 5mtr X 10 mtr X 3 Mtr hight room?

1634

What is the de rating factor of cable? What is the importance of the de rating factor in cable selection?

1588

What is size 00, 01, 1 etc., in HRC fuse types?

Jaypee,

1784

What is the meaning of 40X8X2 busbar dimensions for carring load of 400 Amps

1524

What is the purpose of shunt trip in ACB function?

1 5324

What is the working principle of CFL & T5 tube light & 40W tube light with electronic ballast?

Remi,

3457

Is there any Flood lighting system which produces more light (More power consumption 1000W,400W etc.,), white light and restart immediately after power restoration ?

1 2598

What is working principle of washing machine?

IBPA, Samsung,

9 88544

Can we use 3 phase energy meter for measureing power in 2 phase 440 V phase circuit?

2 4512

1)What are the proccedure of initial charge of 100AH lead Acid battery bank 2)whether discharge test is reqd ? if it is rqd why, how 3)what are the discharge critieria (volt/cell or sp.gravity/cell

1 2717

what is ignition?

1 2896

sir,i am swati. i am goin to gv jspl exam on 21st nov'10. iwant previous year question paper. plz help me out. my emailid is swatisinha.dav@gmail.com

1 2857

why the autotransformer burnt while stating the pumpmotor?, In starter and motor there was no abnormality.

4 12240

what condition there autotransformer will fail?

2 3355

Why insulation level follows this order? transformer < bus bar < circuit breaker & Isolator < transmission line.

1648


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Un-Answered Questions { Electrical Engineering }

what are the differant std sizes of cable trenches?

1495


i applied for the ap transco please forward the freqventley asked QA

1507


There are different classes of protections in power plants.class a,b,c are clear..is there any class d and e r there..and elaborate class b protection.

1596


How do we calculate transformer oil in liter from the rating of the transformer.

1136


Is it possible to operate a synchronous 2-poles turbogenerator with a still-in-place faulted bar but electrically disconnected ???? If yes, should I act on the other phases as well ???

1409






Why synchronous motor is used in power factor improvement,dc series in lift

1148


who many types of fire explane with exmple

1706


How it can worked plc based electrical system And which type of software using.

1634


How to decide cable tray size?

668


Can anyone tell me some hints about what type of questions are asked by the interviewer by an Electronics engineer when company is installing an IPP and wants a team of engineers?

1766


How to test the vector group of a Yd11 transformer? what are the relations to be checked between various vectors to confirm this vector group?

3948


Testing report of Earthing of 3.15 MVa PTR.

2088


What are the Formula of computing Back up Time of 500kVA UPS with 4 Battery Banks, each bank composed of 43 pcs of Batteries 12V150Ah. How to compute the Back up Time of UPS? We have also 3X500kVA UPS running in Parallel same composition as I write above.

859


What are the characteristics of negative feedback?

574


how we can calculate chiller required ampear?

1559