Electrical Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

What is the diameter of electromagnetic field around a 11000/415v transformer ? Dose it affect people who live 3-4 meter beside it?

2177

Why 50hz and 60hz frequencies are used by the world, why they are not taking 55hz?

3 8679

what will be the magnetizing current in the testing of 27 MVA transformer?

1 4740

when we start the tube light, then it takes initially 1100 volt, after glow it takes 120 volt?(when we give 220 volt a.c.)

3 6719

how many testing is necessary for 27 MVA transformer?

1 2476

why does the time taken for fuse to melt is longer as the wire length increases?

1 3873

PLEASE INFORM ABOUT THE IDEAL TEST RESULTS OF MAGNETIC BALANCE TEST OF TRANSFORMER 33/11 kv DELTA-STAR T/F

2262

what is meant by phase &line voltage, how its differ from each other ?

5 13021

what is synchronizing panel & its working.

3 8675

One of our gas turbine generator unit "1st stage rotor ground fault" alarm was occured several times. we tried to measure some voltage vulue ground fault protection relay (UNS3020a made by ABB and we measured the value of: Ground: 0.9VDC 5V: 5.8VDC 24V: 23VDC u+: 300 – 350mVAC Rf1: 17.5mVAC Rf2: 17.6mVAC The unit still running and the alarm was reset. As of 6pm yesterday and unitl now no alarm happened again. I our protection relay was defective?

1 4560

Is a DC Transformer Possible? if Yes, Then Why, if not Then Why?

9 18953

when meggering a 3ph,480v oil reservoir heater on a regen gas compressor, why do I get a reading to ground when meggering phase to ground? shouldn't it read opened or is there something that makes it read closed? on the same heater, when ohming, it reads open. thanx

1 5464

Please give me the formula stating relation between AC & Dc.

JP Group,

2 8623

how to stop oil leakage in power transformer.

APGenco,

1 5972

what is meant by vector group in transformers? wy we r using that?

1 4918

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Un-Answered Questions { Electrical Engineering }

Can we put 3 layers of cable tray while installing tray

2448

Define damping ratio.

1307

What is ramp signal?

1162

Saving in copper achieved by converting a 2 winding transformer in to an auto transformer is determined by A voltage transformation ratio B load on secondary C quality of core material D size of transformer core

3237

What is bode plot?

1305

In a Impedance Based Distance Relay (Quad Characteristics) - Could there be two different Line Angle(RCA) for Ph-Ph & Ph-Gnd? If So Kindly Let me Know.. Where, What are the advantages of the same?

1481

pls tell me function of closing coil of A.C.B.

3422

Why single phase induction motors are not self starting ?

1703

how is calculated the quantity of weight in hot test xlpe?

2554

How to protect a Dosing pumps/any sensitive equipment (single phase) from surge protection inside a food factory.

1793

why is the power generator connected as star earthed or star earthed through reactance and what its features ?

1745

If we have 11 kv RYB Phase single core cable near about. Then wht effect and losses

1933

hello friends..... any one have papers or any study materials?sail ,hpcl...?

1938

Pl. share your experience about industrial-electronics repair of machine tool.

1945

What is the basis for selecting Vk/2 or Vk/4 for REF and Differential protection of Transformer and What is the significance of magnetising current

2451

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