Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is the use nuetral wire

8 4920

how external lighting design? please give examples?

710

what is the effect of leading power factor

Aurobindo, R L Steels and Energy,

3 5823




give me a clear defination of inductance,and how can u calculate inductance of a motor

1549

HOW CAN YOU CALCULATE PRACTICAL EFFICIENCY OF A ASYNCHRONOUS INDUCTIONMOTOR OF 7.5KW,& MOTOR IS RUNNING WITH AVOLTAGE OF 410 VOLTS,& TAKING CURENT OF 13 AMPS

641

WHAT IS THE USE OF ANTIPUMPING CONTACTOR IN HT BREAKERS

8 6020

EXPLAIN THE WORKING OF SERIES REACTOR IN HT CAPACITOR BANKS (FOR VOLTAGES & CURRENTS)

1 6057

BRIEFELY EXPLAIN MEGGAR PRINCIPLE

2 9251




what is impedence (Z) of transformer, what indicate in transformer , which perameter indicate in transformer

CTS, Suzlon,

5 7353

Motor and transformer working with same principle so why motor rotates while transformer not?

7 6025

how to diffrentiate between ac & dc motors from a distance

5 18691

what is field flash

Bhel,

4 5434

what is nuetral grounding

2 2949

If a surge divertor is required to be protected by 32 amp C Curve Circuit breaker does this limit the amount of protection from surges that you will acheive

588

What is surger vector in 33Kv transmission feeder? We have AC power generator of 8MW which is paralleled with 33Kv EB grid. Some times our HT breaker gets trip off due to surge vector problem. How to over come it? Is there any device to observe the surge and avoid tripping?

3 4780


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Un-Answered Questions { Electrical Engineering }

it is possible to rotate the DG engine dc starter with wrong polarity connections? why?

1019


i have total 8 dg sets for synchronizing and 2 buscoupler,1 sectoin dg no 1,2,3,and 2 sectoin dg no 4,5,6,and last section dg no 7,8 ....if buscupler no 1 and 2 is off mode ..than dg no 1,2,3,will synchroniz of another dg sets?

507


What are the site acceptance tests for power cables, DG Sets, LT panels & 30kVA UPS ?

1084


Why electrical power generation and transmission done in 3 phase system not more than 3 phase ?

1816


Write down the name of 2 lady Bir Pratin of Bangladesh

775






following are the questions asked in interviews: 1) Considering the short circuit fault, which switchgear is preferable, SFU OR MCCB? Which operates faster? whicg one is popular in Indian Market and why? 2)Define SCPD. What is type2 coodination? 3)Why the contactor rating is higher for the fuseless selection than for fuse selection? whether the ratinf of SFU or MCCB remains the same in both the cases? 4)If the HP rating is known then can you calculate the ratings of L.V Switchgear(SFU/MCCB, contactor, OLR) without using the selection chart?

941


On what basis the the size of Lightning arrester for buildings are selected ?

365


how load of a turbo generator can be increased

665


description about dry type transformers

698


define the active power?

729


what is saturation kit?which use above 15 kw motors panel side.

2350


How to calculate the sag of OPGW during stringing???

1287


Draw the wave shape of armature current in a generator subjected to a sudden three phase short- circuit at its terminals. Define various reactance of generator from this wave shape.

637


Why the field rheostat is adjusted such that the voltmeter reads 380V

946


why the neutral line is not giving shock to us if we touch it ?

597