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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

why the desirable efficiency for a motor is 60%, but in case of transformer, it is above 90%?

1 4198

how to calculate Amp, 2 different Amp of batteries? Example: No. of Batteries = 2 Battery voltage = 12V 1st Battery rating = 17AH 2nd battery rating = 30AH between parallel connection then output volt 12v Amp?

Bhel, LG Soft,

2 5459

Can we use droop CT in neutral in place of W phase of alternator ?

2 5632

what is the earth resistance

Micron Electricals,

4 7968

For 6600/433 distribution transformer we apply secondary side 433 volts how much voltage in primary side.

2 5252

how can calculation ate Amps for cabel. Ex-for 1sqmm wire hou many amps we can draw

Videocon,

2521

can u tell the difference between star-star transformer and delta to delta transformer.

Videocon,

3 6062

what is rating boiler

2057

expansion of rccb

Videocon,

2 5303

What is the intent of short circuit studies?

3 5606

how and why are capacitors are used to improve powerfactor?

4 6966

why do we use star-delta starter. what is its need?

6 49692

whenewher three phase supply is given to induction motors revolving/rotating field is created & rotor rotates.When the three phase supply is given to three phase transformer then revolving,/rotating field is created or not? if not why?

1 3534

how could we findout the lightning arrester failed or not in live circuit? Is there any instrument to measure the high voltage at the time of sky lighting?

1 4179

ELECtrical

Bahwan Engineering, Bhel, Electrosteel, NBCC, Qatar Airlines,

2 5391

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Un-Answered Questions { Electrical Engineering }

how to set the time in digital timer ?

2083

What should be the values of settling time, peak time, steady state error, overshoot, rise time, MPOS (Maximum percent over shoot) to keep the system in transient state, to keep the system in steady state ?

2310

What is the resonant peak?

1240

grr resistance & contrator malt continuous

2214

how withstand of hi-pot test outputs of transformer wire 2.5mm

2018

how to fit 3 HP crompton gear motor with conveyor with the use of staring delta starter or ordinary starter?

2088

suri transmission

4798

How wire size can define in electrical wiring? What is the ratio?

2356

I want the details about BHEL company examination.Can anyone able to help me please.

2103

Mention the methods for starting an induction motor?

1200

What is the HVDC Transmission System? What are the conditions applicable to lay an HVDC Line?

2357

Generation of voltage for each phase are same of a turbogenerator.Although the short circuit current flow when two phase of turbogenerator are shorted(where current can't flow without potential difference),why?

2174

1 Ton is equal to how many watts?

1173

In three pin plug 6 amp. 220V ac rating. Why earth pin diameter is higher than other two pin? What its purpose ?

1277

why h parameter are called as hybrid parameter?

2029

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