Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Apparent power is expressed as V * I(Conjugate). Why not in V * I ?

3416

What is meant by electrical speed?

1 3667

What is the difference between induction generator and synchronous generator?

3 11112

What is the difference between solid grounding and impedance grounding?

1513

Current chopping mainly occurs in air blast circuit breaker.why?

1 12627

For high voltage and low current Circuit Breaker preferred is vacuum circuit breaker.why?

1 14264

Salient pole alternator is more stable, why?

2036

What is difference between stable and steady?

1 7532

Is there any difference of regulation of transformer, alternator , transmission line, if yes, what is it?

1 4252

can i use 10 mfd + 6 mfd instead of 15 mfd capacitor in single phase motor as running capacitor

3 6808

How to calculate impedance volt in Transformer?

1517

what are transmission line parameters and transmission line constants?

1 2892

WHAT IS THE CURRENT CARRYING CAPACITY OF 2.5/3 CORE HI TUFF CABLE,WILL IT SAFLEY CARRY 8.6 AMPS OVER 120 METRES,CAN YOU ALSO ANSWER WITH FORMULA FOR WORKINGS OUT ,THANK YOU 3RDYR APPRENTICE.

3097

why phase & neutral is use in tv? why earthing not use ?

2 4421

why wave traps are placed only at y and r phase?

3 12675


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Un-Answered Questions { Electrical Engineering }

What is the need of earthing transformer for delta side of a transformer. (Think of a line section between a star/delta transformer at a grid substation and delta/star transformer at a village. An earthing transformer is there at the delta side of the star/delta transformer at grid substation). As there are no ground reference there will not be fault current if a one phase is grounded. Further L-L phase will be sensed by the primary side of star/delta transformer as a L-G fault. So why an earthing transformer is required at delta side

933


1.4 What is meant by CT knee point voltage and how would you determine it

1111


I AM FROM ELECTRICAL ENGINEERING ? I AM ASPIRING FOR "BHEL".HOW I HAVE TO PREPARE .ON WHICH TOPICS TO BE CONCENTRATE MORE.PLEASE GIVE FULL DETAILS OF WRITTEN EXAM.

1608


hi friends this is a newcomer in your community of enthusiastic peoples. i am preparing for SSC (CPWD JUNIOE ENGG EXAM FOR ELECTRICAL) pls guide me on the same how to crack it? PLS LET ME KNOW IS ANYONE THERE WHO PASED IT? CAN I GET THE QUESTION PAPERS OF PREVIOUS EXAMINATIONS?

1745


if sf6 gas low in gis what will happen

345






how to decide the capacity of accl

1868


how pt is using

1438


I have doubt that the supply HZ (very low or high than rated ) may affect the power factor. is it true. ?

1186


what is a synchronizing lamp ?

952


what are the industrail measures to over ferranti effect? how would the ferranti effect the power system if those remedial mearsure arent taken? how often does this effect occurs in real power system?

1649


Z transform is use when system is not a) converges b) diverges

1141


Fantio of tranformer

1696


ho can we calculate the conductor insulation value according to their ratings like voltage,current etc.how insulation value related with voltage,current and power of amachine

1546


Explain the working of variable frequency transformer?

606


do we use neutral grounding for resistive balanced load? if we use what happen?

1289