Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is the rating of HT SUBSTATION and LT SUBSTATION?

Sail, NTPC,

11 43178

Assume a condition such that two motors of rating 6.6kv,415v are connected to blower,so tell me which motor draw large current give appropriate reason?

NTPC, Student,

2 4826

What are eddy current and define rms value?

NTPC,

4 7049




Transformer's core is made up of which material and why so?

ABB, NTPC,

10 23175

Draw the line diagram of diffretial relay connected to transformer?

NTPC,

1173

Name different types of fault and which instrument is used to measures earth,short,open cicuit fault?

NTPC, Vijai Electricals,

6 8664

AC current is flowing in a wire in your home how can you measure it(name of the instrument)

TCS, NTPC,

24 11396

How does and Earth Fault Relay operates in DG set control panel?

Cummins, University,

1 4054




1> what r different types of fault in cables? How will u locate and test these faults? 2> why earth wire is provided on top throughout the transmission line. why not only on towers? How much area it can protect? 3> what r different types of transmission losses? How power loss can be minimized? 4> what is the % of power loss on transmission lines?

IOCL,

3 7437

what type of relays used in transformers?

BSNL, APTransco,

24 47160

What will be the capcity of 3 phase DG set require for 25 KVA single phase lighting load?

Supernova,

7 11716

MCB is used for high rating &MCB is used for lower rating.What is technical difference between ACB & MCB?

7 7195

what is MUSS?

HP,

1 8177

what is phase and neutral.

HP, Voltech,

16 52489

what factors to needed while selecting a MCB and MCCB

3 7211


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Un-Answered Questions { Electrical Engineering }

I Want randstand placement papers

494


what is meaning of bus riser

1038


what is meant by flywheel and its role in retardation test

971


Explain Even and Odd signals?

553


The efficiency of a 100kva transformer is 0.98 at full load as well as half load , for this transformer what is the Copper loss at full load ?

314






Why Neutral Isolation is required?

996


How Self works in DG set

541


What is the difference between PLC and Embeded system

217


In diesel generator how AVR get voltage to excitation. And basic diagram DG EXCITATION CIRCUIT.

1979


what kvrah y we need to take the readind of that

747


what will happen if there is a voltage leakage or current leakage in an electrical train

702


why i can not use thimble on capacitor duty contactor

99


how to identify conection leads of an unknown electric motor

740


what is the path of thunderlightening? once both a buffalo and a person were standing 5m apart but lightening hit and killed buffalo not person?

1684


Why in 6 KV XLPE cable termination kit used and why not in 380 V xlpe cable same is not used

1382