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Electrical Engineering Interview Questions
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In case of a synchronous generator carbon brushes, some brushes expire before the others. Why is so? When all the brushes are installed at the same time, why don't thee expire at the same time?

 1 2276

Grounding. Dear all at one of my site we checked the amps at the earthing cable to the alternator it was found 125 to 130 A. at the neutal cable in same machine found 146A. in the same plant checked the earthing current on other alternator it was 52A, and neutral 116 A. we are facing problems with our controller and the card was damaged once. can that neutral/GND current be a reason? as there is common grounding for the Alternator,Brkr panel,Transformer?

 2 3180

can anyone send me some sample question regarding power grid corp

 1799

what is difference between power transformer and distribution transformers

 1 4483

Seamless tubes are made by?

Bhel,

5 9176

what is the difference between earthing and unearth

Apple, NTPC,

2377

in VFD when freq is reduce the voltage will reduceor not if it will reduced upto ...

 8 7842

Why capacitor bank is not neccessery to switch on,pls answ me with formula

 2 3956

why ct mensioned 0.5/5p20 plese any reply to me

 2 6524

Is there any Institution for giving M-tech in Electrical engineering for those who r in service? Give the details please.

CB&I Lummus,

1578

what is the difference between interconnection and intraconnections in the circuit diagrams

NTPC,

7570

Explain the laying procedure and laying depth of submarine cables under sea?

Schneider,

1 3442

how work a harmonics filter(L-C combition).

Bhel,

1 1895

how can I calculate charging current of cable/overhead conductor? what is roll of voltage in it ?

 3236

how can I check HT cable ?

 2 5370

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Un-Answered Questions { Electrical Engineering }

What happened if C.T mount at any cable or Bus bar in wrong direction . C.T going on proper work or not . C,T direction is essential thing to properly work.

1255

explain single phase series motor

1463

sir i am apearing for nic exam.i dont know exam pattern.can you please send me some model papers

1507

how generator avr give to the input?

1496

What is formula calculation size cable wire ?

1480




Why hydropower is called renewable source of energy?

616

What are the parameters of water ( Water quality )to be monitored in Centralised HVAC ( water cooler chillers )

1635

-What should be minimum value of insulation resistance and maximum value of earth resistance at any electrical instillation and what is method of testing the same.

1582

Why do we mostly prefer to generate and distribute electricity in 3 phase and not in 4 phase or 5 phase?

732

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.

3077

sir please send me techinical questions for junior engineer posting in bangalore railway i am diploma holder

1557

which is better to use svc or synchronous condenser why ?

1352

what is the id1 & id2 setting in differential protection relay of CSPC?

2293

What is the slip speed?

672

what is the best method of grounding in 30 MW generator?

1507

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