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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

Apparent power is expressed as V * I(Conjugate). Why not in V * I ?

3908

What is meant by electrical speed?

1 4470

What is the difference between induction generator and synchronous generator?

3 12692

What is the difference between solid grounding and impedance grounding?

2114

Current chopping mainly occurs in air blast circuit breaker.why?

1 13588

For high voltage and low current Circuit Breaker preferred is vacuum circuit breaker.why?

1 15140

Salient pole alternator is more stable, why?

2717

What is difference between stable and steady?

1 8406

Is there any difference of regulation of transformer, alternator , transmission line, if yes, what is it?

1 5239

can i use 10 mfd + 6 mfd instead of 15 mfd capacitor in single phase motor as running capacitor

3 8202

How to calculate impedance volt in Transformer?

2086

what are transmission line parameters and transmission line constants?

1 3683

WHAT IS THE CURRENT CARRYING CAPACITY OF 2.5/3 CORE HI TUFF CABLE,WILL IT SAFLEY CARRY 8.6 AMPS OVER 120 METRES,CAN YOU ALSO ANSWER WITH FORMULA FOR WORKINGS OUT ,THANK YOU 3RDYR APPRENTICE.

3569

why phase & neutral is use in tv? why earthing not use ?

2 5839

why wave traps are placed only at y and r phase?

3 14882

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Un-Answered Questions { Electrical Engineering }

Whats the minimum value for I.R. that can be allowed for HT & LT alternators for operation?

4073

Please explain, how to test vector group of tranformer(Delta y1) . Thank

1701

(In MEP services) HVAC in AC Plant room what else can we provide if the chiller is not considered?

2043

What are the different types of transformers?

1163

What are test values for an 63 KVA and 100 Kva Distribution Transformers for the following typical tests 1)Magnetic balance 2)Short circuit test 3)Open Circuit test 4)Vector group confirmation test .please give me the standard values for all the above tests.

2717

What if the difference beween internal and exrteranal LBB?

1676

Explain mechanical rotational system?

1128

how to calculate the power factor when instantaneous voltage and current has harmonics in it ?

1961

Define filter?

1122

In a synchronous motor. if start is running at high speed. What will be the starting torque : Higher Lower Zero

1723

3phase cable calculation formula by motor load

1519

write circuit diagram for a motor rotate in forward direction once it started and when pressed the same button it should rotate in anticlockwise.

2561

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.

2094

Explain the working of any one cutting machine

1109

what is v/f control in VFD?

1550

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