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 4783

how to converate kva to kw ?

4 7400

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

DPL, NTPC,

5 8478

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.

1848

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

1 4317

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

1 4130

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

Bhel,

2 5005

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

NTPC,

1 9965

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

L&T,

2283

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.

2142

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

1 3988

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

1923

why are u join ntpc

NTPC,

2207

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

Descon,

2241

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 6404

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Un-Answered Questions { Electrical Engineering }

What is different type of Electrical curve and how it protects the equipment's while up-normal situation?

1868

why incomer bay is required before transformer bay if there are more than 1 nos. of transformer bay.

3170

block diagram of 2 ups system connected in hot stand by mode?

8112

what is zinc diffusion?

2165

A motor running with lenze frequiency inverter stops if I REDUCE SPEED with 25% load.If I run it in High speed and medium speed running smoothly with full load.please help me to solve it.

2039

Define damping ratio.

1306

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

2154

What is meant by derating factor?

1284

For high frequency application we use which transformer?

2001

What is transmittance?

1170

What is meant by reactance voltage?

1193

what is meant by CT`s saturation ? Can we use Metering CT`s with Protetection CT`s ?

2239

with out colour codeing on conductor how can be find what is r,what is b,what is y phases.....

2009

i am in need of AC SYNCHRONUS MOTOR 30KW. ANY ONE KNOWS THE MANUFACTURER OF SAME. ALSO MOSFET AC CONVERTER 20KVA CONT.OUTPUT.

1972

how many synchronous motor are there in any power plant

2053

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