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?

2131

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

3 8552

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

1 4666

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 6599

how many testing is necessary for 27 MVA transformer?

1 2412

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

1 3783

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

2214

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

5 12837

what is synchronizing panel & its working.

3 8522

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 4492

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

9 18670

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 5383

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

JP Group,

2 8513

how to stop oil leakage in power transformer.

APGenco,

1 5889

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

1 4838

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Un-Answered Questions { Electrical Engineering }

explain different types of d.c motors?

1154

What is the rating factor for copper cable ( Specific value according to the type of laying ) & the voltage drop?

1848

how a.c. genarator control power factor when its conected to grid supply by incrising or decresing excitation voltage.

3370

How many gap between finger contact in a.c.b. and v.cb.?

1287

i want to know that how the height of Ct ,cvt ,LA calculated on the basis of creepage distance

2615

sir, i am 3 years diploma course pass out candidate.what type of certificate can i got in marine service.

1927

what is the meaning of the symbol << >> put in transformer drawing

1983

What is the disadventage of gland earthing(power cable) if any. ?

2121

area control error

1737

What will be result if we connect LT votage to the terminal of HT motor?

2145

How to calculate ant test the burden of Current transformer

2455

What is the effect of solar radiation on the design of an Isolated Phase Busduct?

2365

The sodium vapor lamp is not glows when it is connected a distance of 5 meters above from gearbox, why ?

3677

what is KSR type transmission tower? What is LSR type transmission tower?

5385

why we permissive overreach in distance protection.where it is applicable to use in long r short lines

2766

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