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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

relation between power station capacity and voltage level?

2059

How can we determine or find out the proper size of any cable if nothing is mentioned on it.Calculation of size in Sq.mm???

1 3591

why we use star connection in HT motor? and delta connection in LT motor

npcc,

2 8525

How we calculate DC inducation moter Amp? Sir pls give me formula......

Superlite,

1836

is it possible to run the any motor when winding grounded? how?

1 3245

what is the use of back emf?

1 3431

How induction stove works?

1 2686

What is touch potential and step potential?

IRI,

2157

What will happen if i connect the delta winding motor to star input.

1 2519

How turns ratio test is done in three phase transformers?

2 4723

In a 11Kv/433Volt Delt-star step down transformer one one line(Line-B) of HT site is open & earthed on DP structur. What will be the voltage on LT side R-Y, Y-B,B-R and R-N, Y- N & B-N?. Please help to understand the problem with examples. Arvind , Jaipur.

1 3982

Pleasd Tell Me..... In Generating Stations Why The Generation Of ELECTRICITY Is In 3 Phase Form?? OR In Generating Station Why We Generates The ELECTRICITY In The 3 Phase?? Why Not In The 4 Phase, 5 Phase Or 6 Phase Form??

3 5378

How will you justify IR value and Charging voltage of any motor,transformer and Cables.......???? . . . . . . . . Plz tell me any body Baljeet Singh, engineer_89@refiff.com

2122

which element is neglected during fault calculation? a)resistance b)inductance c)capacitance d)reactance

4 8191

where transformer is installed? a)generating station b)substation c)voltage regulating area

6 7114

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Un-Answered Questions { Electrical Engineering }

should %impedance be high or low in a power transformer? if so why?

1926

What is the actual meaning of thermal power efficiency ?

2173

DG cranking voltage?

4759

explain the Trip supervision circuit

2152

What is Phase to Phase clearance for 800V System Operating Voltage as per IEC61439

1041

Explain the operation carried out in thermal power stations?

1039

with help of neat sketch explain principle of TIG welding process

1963

what is the formula for hv test for cable and circuit breaker..????

2040

In a large office how do we calculate required number of light fittings, assuming fittings are 4x18W or 2x36W fluorescent fitting ?

1874

What is the effect of atmospheric pressure & Temp; on efficiency of motor? Why NGR(Neutral Grounding Resistor) is used in 132/11 KV Transformer & how? What is the use of Auto T/F in Grid Station?

1904

how much cable size required for 70 kilowatt load.

1680

I have a drawing of a wound rotor induction motor for a crane. This crane motor has 5 forward speeds & 5 reverse speed implemented of course with different amount of resistance for each speed setting selected. What has got me scratching around is the fact that 8 of the 10 speed selections switch in uneven (unbalanced) amounts of resistances on each of the 3 connections to the motor's rotor.Can this be possible? I would have assumed this would produce unbalanced rotor currents and therefore vibration in the motor. I would greatly appreciate anyone's comments on this. Many thanks, Confused.

1873

What is marx circuit?

1133

What are your personal skills and abilities for such a Master Course and your possible preparation to undertake this course?

2045

how to store the thunder power?

4488

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