Electrical Engineering Interview Questions
Questions Answers Views Company eMail

when a cunductor is being disconnected from live cct, still it showing charged, if its checked by line tester?

GEB,

8 4329

WHY CFL can't made in shape of bulb.

5 5457

why three phase system is not preferred in aircrafts power cckts if yes than explain reasons?

3 3103




wat is the role of reactive power in power generation?why we have maintain it.

3 7134

wat is the importance of reactive power in power generation.....if it is zero means wat will happen to system........

Bhel, Jindal,

22 27559

what is difference between differential protection and distance protection and how we calculate the sloop?

OPS, Power Grid,

5 32359

what is slip resistance? how much its value in 110 kw motor? why voltage is varied in vvvf drive ?

Reliance,

1 2567

What type of protective system we uses in L.V. distribution panels?

6 4832




Why P.f. of the system decreases when it is connectect across induction motor? & how to maintain the p.f. of system to unity.?

Reliance,

6 5543

What do you mean by S.F.U. unit? application of it.

Indo Asian,

16 80232

what is green house effect?

4 3096

what do u mean by knee point voltage?

TATA,

7 10405

what is negative,positive abd zero sequence current explain clearly

Jindal,

1 6443

what happens when ac supply is given to D.C motor.

17 20871

what is purpose of using reactor in substations.

Heavy Engineering Corporation Ltd HECL,

20 88831


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Un-Answered Questions { Electrical Engineering }

what will be happen if earth point is being used for as a neutral point for raw power , and same will be used for ups earthing

731


orifice sizing how done, checking & selection

542


what is meant by brushed alternator & its working principle ?

723


why occ characteristics of generator is also called as magnatization characteristics ?

637


If you don’t have coal, salt and copper, then how would you earth your connection temporarily at a camp site.?

757






how to electronic energy metter failed in electomagnectic fild passing in the metter and which thing to defect more on metter.

646


1.what is mean by 8/20 micro sec waveshape

806


I would like to know that the fault curretn at base load and at 10% generation will be same? Fault level of BUS remain same with different generation?

567


What is the effect on Power factor and capacitor when your company load is more than 70 % of welding transformer

431


How do we calculate the maximum amount of current in a 300 SQ.MM cable ?

688


what heppend if we are connected u1-v1-w1 as a star point in the place of u2-v2-w2 in power genration

886


how to calculate earth fault relay current and CBCT ratio

4467


how many single tension hardware are required on a double circuit transmission tower?

666


How PSV sizing being done

830


For a 6.6kV Motor it is recommended to do megger test with 500 V d.c and not more than 5kV d.c but the Hi voltage withstand test should be performed by 12kV AC. Why the dc voltage test should be limited but AC voltage withstand test could be with such a high voltage?

706