Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Transmission line design. Say, I have a 1MVA generator and 2 transformers that will have the same load. What would be the proper rating of the trasformers? Is it safe to say, that I will simply divide the total rating of the generator?

1 1863

what composit error,ratio error,phase error in CT and PT??

4 26245

Why Aluminium wires are used for High tension(HT) lines? 11 KVA/32KVA & aboue

6 11363




srij i need the relationship b/w KW AND KWH and with an electrical example. plz send if u can?

4 2891

What is the percentage loss for aluminium wire for HT line more than 11KVa

842

When charging a 20 MVA , 33kV/6.6kV transformer through regulated (0-6.6 kV or 0-33 kV) source on no load , what will be the maximum current drawn by transformer from source and what sould be the source capacity.

TATA,

5 7116

I am working on a 11KV system with fault current of 40KA for 1 second. I have selected 2500MVA 11/0.433KV transformer. How can i find the impedance value for this transformer? Please help me.

PPL,

2 3731

what is short circuit force ? How to calculate it for Panel?

Bilt,

1 3831




what is the difference between high impedance REF & REF, same high impedance differential protection & differential protection for Power transformer?

1 6835

to improve the existing power factor whether capacitors have to be added in series or parallel.and why

3 3840

how to calculate the capacitor rating for improving power factor

L&T, Synergy, Property Solutions, TAFE,

10 14564

why earthing is not required on transformer prymary winding side ???

Genpact,

13 16498

want to know about DMRC

4 5623

why the amount of voltage generated at power generating stations is 11 KV only....?

3 2216

In a company has been installed an analog amperemeter, this company was suplied by generator X, there is no problem in the ampere meter, rigth now this company's supplied by generator Y then the pointer in amperemeter vibrating. What happened? Why? Thank's

2 1649


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Un-Answered Questions { Electrical Engineering }

which pump used in WTP explain the function of VFD how to dtermine capacitorbank of capacity one plant

632


do any one help me to get "C" license,, i have doubts ,,, if mediators ter pls call me,, my no is 8056640042

270


how braking & making capacity of circuit breaker is calculated?

759


why different series of vfds (like allenbradley)are used in industry ?

909


for 100 HP Induction motor service factor is 1.2(SF) we placed a VFD at the motor side load is balance with 0.3 Amp's Phase to Phase but at incoming of VFD load is un-balance with 10 to 20 Amp's what will be cause of load un balance

434






how can found motors folt current ? how can disided circuit breakers caoicity and breaking capicity ?

690


Practical condition in 400KV Sub station:- Breaker(open) , isolator(open), Earthing (close) at both end e.g A & B. Now Open A Stn Earthing than Open B stn Earthing (Which have a 50MVA reactor) , AND suddenly show R,Y,B phase 704KV,573KV,118KV respectively. Que is without closing of breaker how it is possible.???? My Whats app No:07621840498 for Further Discussion. Pls experts suggest.

770


define digital electronic

711


what is the formula of starting current of 3phase and 1 phase motor???

842


why swinburnes test cannot be performed on series machines?explain

913


1.why are not using acb 33kv ht side? is there any problem 2.what is difference between acb,vcb,sf6 breackers? 3.what is the function of invertor and convertor in ups?

871


what is allowed value of zero sequence impedancce of 6.6 kv nuetral earthing transformer ?what is the actual value

798


Why do we pefer VCB over OCB?What are the advantages of VCB over OCB?

1166


What is inverse definite minimum time lag relay? Where is it use?

1337


can you any one give exact mathematical relation between AC current and DC current?

579