Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Please explain open transition and closed transistion system in Star delta Starter?and also the state difference of both?

4 10745

what is the question paper model for section engineer in RRB

RRB,

743

Can a 5 core cable one end with a 32A 3p+N+E plug and the other end 32A 3p+E be used on a generator?

1 2074




What is the use of Isolation Transformer, and Neutral is using for return path, finally this current is going.... but same time the voltage of the neutral should be below 1 V...

6 7904

Dear All, Pls let me know about ELR.... CBCT is using for singnal purpose... How it works.. any body can explain pls.......

4 11059

What do you mean by linear and bilateral network?

OPTCL, Infosys, Disa, TICT, Automation, EGCB,

20 124773

if the HR asked to me., you have got 92% in higher secondary but got only 72% in engg whats the reason??what should i have to say ..please help me..

Honeywell, Wipro,

8 6399

why making capacity is more than breaking capacity?

Essar, Indo Asian, Infinity,

13 21119




what is inrush current in transformer?

Bhel, Essar, GMR,

17 30159

what is electric current

17 7184

what is the capital of india

eInfochips, Reliance,

13 9558

what is surge suppressor?

Essar,

5 5001

how to write program by ladder logic in case of PLC operation

Gridco, Sofcon,

3 14538

how power saving takes place through VFD?

9 10178

If i want to build 230kv substation what are the equipments to be installed?

7 10712


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Un-Answered Questions { Electrical Engineering }

1)How much current can a 3-1/2 core 100 mm wire carry? 2)What are the special cables required for explosion proof wiring? 3)In case you do not have coal and salt for earthing, how can you achieve good temporary earthing? 4)One horse power single phase motor is more likely to get hot than a one horse power 3 phase motor. Is it true or false, if true why? 5)What are the different types of soft starters for large motors?please explain?

2722


Can anyone explain me about the RLC based Impulse high voltage generator and how to and operation of Series resonant High voltage reactor...?

591


how does WTI work ?

653


I have 4 DG set with 1500KVA rating. system breakers are 11KV & alternator are 415 Volts. Between alternator & breaker one stepup transformer used. i want to Know what is max. resistance for body earthing & 415 & 11KV V Neuteal earthing. my fault current is 14 times for 2 sec.

1033


why power factor is lagging and leading(i.e -1to +1)

368






In a large office how do we calculate required number of light fittings, assuming fittings are 4x18W or 2x36W fluorescent fitting ?

642


give some advantages and disadvantages of combiniing the session, presentation, and application layer in the osi model into one single application layer in the internet model

815


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?

3022


calculate external resistance values to add to the rotor of a slip ring induction motor. STATOR- 415 V, 3 phase delta, 1100 A, 50 Hz, 1490 rpm, pf 0,86 ROTOR - 660 V, 590 A, 50 Hz. STATOR current at each steps STEP1-600A,STEP2- 800A,STEP3-1000A,STEP4-1100A.

2161


sir i applied for hpcl(electrical).i want to know from which subjects most of the technical que will b asked.and pattern of the written test.pls help me

665


what is cogging and crawling

1138


ACCORDING TO IEC WHAT SHOULD BE THE MINIMUM HEIGHT OF G.I. STRUCTURE OF CT, PT, ISOLATOR, LA?

804


Can we use Ccapacitive voltage transformer directly for metering purpose?

261


Hello Guys !! i want to rrb section engineer electrical(signal) previous model papers? any body help me?

520


What consists of 2 or more thermocouples to be connented series?

561