Electrical Engineering Interview Questions
Questions Answers Views Company eMail

during installation time of transformer and alternator which points we have to observed?

640

what is principle in relay testing kit?

3 4856

how we can calculate which capacity capacitor bank we have to add for improve pf?

Torrent Power, JM Huber, Consultancy,

3 10821




what is the difference between LT and HT power supply?

Siemens, JSW, Center One Mall, Central University, Suzlon,

26 153201

why buchholz relay installed in inclined position

Eskom,

3 6381

what is zero sequence curr ent ?

4 14594

why we cant use AC supply products in DC supply?

21 9341

why 3 phase motors are preferable over single phase motors ?

4 3199




how to select cable size?

4 7284

what is the purpose of starter in tube light?what is it operation .

1 3134

1)Why electric shock is feel ?? n in a Electric Train why we didnt feel that ? 2)What is the reason for transformer Noise ?? 3)What is relation b/w Transmission Lines & Communication Lines ? 4)Which material is used for making Transformer oil & How u measure its dielectric strength & Name the test ?

NTPC, Tata Power,

14 15411

To check the earth condition (In plug points); the voltage between earth and Neutral is in below 5 volts. Is it correct

6 3864

What is effect of power factor on change in voltage

apspdcl, APNPDCL, My Home Industries,

12 33587

Whats the difference btwn a latch, port,data bus buffer? Do they all not hold data in d flip flops??

1155

which network topology offers the greatest level of tolerance?

729


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Un-Answered Questions { Electrical Engineering }

How to calulate Locked rotor amper(LRA) for compressor type motors?

421


what is the calculation formula for motor starting torque,running torque, running torque.

176


I have a relay contact rated at 220v dc which is supplied with a 24vdc from the panel,for it to trip the dampers(24vdc).What if the application of the relay changes so that it should work at its rated 220vdc then will it work at 24vdc supply given or any other consideration needs to be taken .....

712


we have two motors 1250kW,6.6kV to be coupled on the same shaft ,so please provide assistance for their synchronisation.

774


What is value of earth resistance required for substation and equipment earthing and what are the reference guidelines

426






In hydel power plants, L.A's, S.C's are placed inside the control panel boards. what is the purpose? [already the total body was earthed to ground.]

579


Where I can get the sample question for post of Junior engineer electrical-II For RRB Bhubaneswar.

778


how hydrogen cooled alternator undergo maintanence ? that is hydrogen when come in contact with air can result into explosions .

658


Can we put 3 layers of cable tray while installing tray

1044


What is Control & Relay Panel? And Remote Control Center?

913


i have applied for junior engineer 2 c&w for Guwahati RRB please send me last five year question paper

726


How a capacitor discharge weld power supply works? what is the use of a pulse transformer?

760


what is the difference between pvc & fiber glass cables

235


the problem faced on star or delta winding connection??

663


Swg formulae

682