Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is form factor.and rms value..

IIM, Torrent Power,

1 2188

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

3 4593

what is the maintaining Cf in UPS.

Enercon,

862




how to design domestic earthing pit and earthing wiring?

1 4841

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

622

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

4 6649

if we give DC suply to the AC motor what hapen

TATA,

5 4288

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

1 2908




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

2 2329

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

1 2883

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

5 7803

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 2507

Difference between low impedance and high impedance Restricted Earth Fault

1607

Differentiate between Low and High impedance Protection

1 2028

Differentiate between Zero and Negative sequence current

642


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Un-Answered Questions { Electrical Engineering }

what is the min and max ohmic resistance for the earthing rod installed for lighting poles for street light network

1719


If a transformer primary winding operates at 240v, the secondary at 120v and the load is 1500w & the transformer is rated at 92% efficient, what's the current flowing through the primary winding of the transformer? What is the formula for finding this?

647


what is high - pot test. what's its use?????

715


If auto trip is operated, can you close the breaker.

425


A 3-PHASE TRANSFORMER IS USED TO STEP-DOWN THE VOLTAGE OF A 3-PHASE, 11KV FEEDER LINE. PER-PHASE TURNS RATIO IS 12.FOR A PRIMARY LINE CURRENT OF 20A, CALCULATE THE SECOUNDRY LINE VOLTAGE, LINE CURRENT AND OUTPUT KVA FOR FOLLOWING.A)STAR- DELTA.B)DELTA-DELTA.

857






how unidirectional torque is produced in DC motor?

5150


why only exciting current is shown not primary current in transformer???

623


what is conductor copnstant of ab cable

478


how u measure/calculate renge of capacitor,capacitor has no any rating tag.what is the theory of measure of capacitons.

701


what is load despatching

826


What is the capacity of the Fastners 12mm?

1020


i want bhel placement paper for electrical if anybody having pl send to my id kavitha867@myway.com immediately

766


describe the phenomena of vacuum interruption in C.B

511


what is the purpose of using filters in a protective relaying scheme?

935


How to test Alternator stability test for REF relay

141