Electrical Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

what is the difference between high impedance & low impedance

L&T,

1 4699

how to converate kva to kw ?

4 7261

For 300MW and over a distance 250 km, what voltage be selected? and no. of circuit?

DPL, NTPC,

5 8311

can any one suggest me the tilt angle of my solar pannel ?? or tell me how can i know the fix tilt angle of my solar pannel?? my cordinates are 31.503629,72.993164.

1816

What is the criteria for deciding whther fire wall is required between two power transformers

1 4213

Why we have use 3 & 1/2 core cable use for general electrical supply arrangement

1 4050

What happened when the field winding of dc series motor is open?

Bhel,

2 4926

What is the distance b/w R&Y phase in 33kv T.line,11kv &440v

NTPC,

1 9899

how to differentiate a mpcb,mcb with a contactor? Explain their working operation

L&T,

2226

How Can I calculate for the photometrics requirements for a street lighting? Data given are: 45 units of 6 meter light pole with 150 watts metal halide lamp, 220 volts and installed in a promenade area.

2098

what is the function of avr when synchronous generator act as synchronous motor

1 3924

at work i have a genertor/alternater what is the easyest way to work out if it is dc or ac?

1886

why are u join ntpc

NTPC,

2172

why 3 phase is converted into 2 phase using electronics circuit why not 2 phases are diresctly putted from the 3 phase transformer??

Descon,

2192

I have calculated load for an office building which is 1200 KW as all the load is single phase therefore its 1200 kw single phase. Now i have to design Transformer and Generator for this load Please kindly give me exact answer that how much capacity of Three Phase Transformer and Three Phase Generator is required for this load.

3 6263

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Un-Answered Questions { Electrical Engineering }

i need the curve duty cycle and amper for (150 kva @50% dyty cycle) transformer turn ratio :19 and vin 400

2137

why we use 630mm single core cable for transformer secondary side and why two neutral cable

1845

Generator,motor and alternator Working principal Please explain easily

1479

how do we calculate length of starting time and repeated starting of a direct online starter?

1980

what is parellel power factor correction?

4404

what is motor capacity of 80TR chiller? and also say what is the formula related temperature, motor capacity, TR?

2283

Is it possible to operate a synchronous 2-poles turbogenerator with a still-in-place faulted bar but electrically disconnected ???? If yes, should I act on the other phases as well ???

1981

HOW TO CALLICULATE RESITENCE,REACTANCE AND IMPEDENCE VOLTGE OF TRANSFORMER 13.33 KVA 144/240 VOLTS 93/56 A WITH FORMULA

1980

What is sink and source?

1195

where solid grounding and where grounding through ngr done and why?

2585

WHAT IS THE PARTIAL DISCHARGE TEST?

2125

i m electrical diploma holder i want to do plc $ Scada some body tell me which insitute is best for me near chandigarh

3106

how to calculate singlephase motor efficiency?

2246

what is ATS & RING MAIN UNIT in Distribution System?And its Function.

2010

What are the main significances of root locus?

1235

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