Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What are difference between earthing switch and earthing truck ? What is the operation philoshopy of earthing truck ? Wht are the component of earthing truck ?

Reliance,

2 20139

Befor synchronissation of Generator what test to be carried out.pl.specify with reason.

Kanoria,

3 5524

What is In (current rating) shown on the MCCB? Is this full load which can withstand by the circuit breaker

4 9933

what is mean by marshalling box in transformer?

Reliance,

8 70933

how the 6.6KV motor can be used with 11KV?

2 7504

What happens if a three phase induction motor is suddenly single-phased while running? Which type of winding connection will be affected?

B4S Solutions, DRDO, FACT, SL Electricals,

22 66032

please tell 1 ton equal to how many kilo watt?? in some converter software's that is 3.5 kw. is it right?

Mitsubishi,

8 17494

for compensate 315mh inductance ,how many capaciance required?

Mitsubishi,

1610

for compensate 315mh inductance ,how many capaciance required?

Mitsubishi,

1 4906

what is meant by line voltage and phase voltage in a three phase transformer?

2 5747

"What is the difference between voltage and potential differnce?"

15 35713

why most of the substations are rated in multiples of 11?

4 7639

how one can design armature winding bothh front and back connection

1 3213

what is the difference between synchoronous and alternator and induction motor and generator

2 14858

How much current flow in no load condition of a motor?

8 10439


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Un-Answered Questions { Electrical Engineering }

1 “earthing” for bonding of equipment and circuits to common plant earth electrode potential, 2 “protective earthing (PE)” when this bonding is required for personal safety provisions 3 “grounding” for interference suppressing bonding of screens, sys-tems with ground level 4. low-impedance earthing ? 5.primary earthing system and secondary earthing system what is that? 6.earthing electrode or mesh net earthing electrode ? very confusing , simple but very informative help required ? i will be very very thankful to you guys.

1590


What is the basis for framing the rules of block diagram reduction technique?

956


What are the causes for the failures of sandwich type (Al) busducts?

1417


Why neutral point is consider as zero potential?

2028


Define bibo stability.

649






what is the minimum recommended leakage current of an earthed cable connected to the body or skid of an alternator

1603


What are the different circuits in thermal power plant?

705


Why the unit sizes of hydro generating machines are not standardized as in case of thermal powerplants?

606


which stabilizer is better ? AVR, Servo Stabilizer, Static stabilizer etc & why explain it

2409


why we have and use 3 phase not 2 or 4 or other in power system?

1677


when we gave dc supply to 220v dc motor its rpm is 1200. then we gave 180v. how many rpm of its motor. gave answer with calculation at my ID.... ravizak@ymail.com

1831


Can anyone tell the proper diagram of star delta starter????

1457


WHAT IS MEANT BY SHEATH VOLTAGE IN 132Kv cable?

1808


In case of salient pole alternator when number of poles are 4 or more than 4 it helps the flux wave to be sinusoid as air gap length is increased from center to tip , but if the number of poles are 2 how does the flux wave is sinusoidal?

1519


What is the drawback of class b amplifier? How is this minimized?

660