Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is form factor.and rms value..

IIM, Torrent Power,

1 2053

WHY ARE THE LT GENERATORS SOLIDLY EARTHED WHILE THE HT GENERATORS ARE EARTHE THROUGH NGR OR NGT??

3 4514

what is the maintaining Cf in UPS.

Enercon,

827




how to design domestic earthing pit and earthing wiring?

1 4774

placing earthing pit in pathway is correct or wrong??. placing earthing wireGI1/18 inside walls is correct or wrong?. explain!!!

578

why induction motor always operate at lagging p.f.?

4 6512

if we give DC suply to the AC motor what hapen

TATA,

5 4179

Why Indian Electricity frequency desined 50 Cycles as developed countrys are using high frequency with low voltage

1 2846




what is the use of spherical metal balls attached on to the earth wire of transmission over head lines?

2 2264

what is the function of an auto reclosure relay in OHL?

1 2819

why transformer capacity is called KVA and motor capacity is called HP/KW? Why transformer capacity cant call HP/KVA?

5 7674

what happens when back feeding supply accidently collapses with normal supply ??? How?? [that is sometimes in a substation 11kv feeder if their ws long time permit work, back feeding supply will provide from nearest substation... if accidently after the permit work,they charged the feeder without removing back feeding wat will happen...?]

KSEB,

1 2445

Difference between low impedance and high impedance Restricted Earth Fault

1549

Differentiate between Low and High impedance Protection

1 1977

Differentiate between Zero and Negative sequence current

605


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Un-Answered Questions { Electrical Engineering }

If Polarization index of motor 8.75 at 500volts of medium voltage 4.16 KV motor what this mean winding good or bad pl answer if any reffrence book give me the link

929


Fantio of tranformer

804


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

473


how to calculate the torque of a motor?

748


What is NGR . What is the purpose of 10 sec ,60 sec rating of NGR.

435






HOW TO CALCULATE HV TEST VOLTAGE FOR ELECTRICAL EQPT.

777


why swityard is necessrry requirement in any bis power distributin systems?

667


why on axial hitting up of air blast on hydrogen produced in oil circuit breaker,temperature rises of the core of the arc?

541


In India the supply voltage is 230 volt A.C. During the negative half cycle phase becomes neutral and neutral become phase? or what will happen during negative half cycle? how the electrons flow during positive and negative half cycle?

613


what types of cable used in underground coal mining?

185


What is resistance of 50meters, 16sq.mm, single core copper cable?

531


what are the assumptions made in swineburne's test?

742


Some times to change of DOR of a motor, interchange of R & B is not effected and RYB take same current, but interchange of R&Y is effected ie change the DOR. My doubt is what is the problem in motor and how it is happen.

685


How we can recongnise the phase displacement of transformer connection between primary & scondary...plzzz explain it with example.........

798


How do you calculate the actual power consumption of an inductive load appliance. Say, a deep freezer of 200watts

759