Electrical Engineering Interview Questions
Questions Answers Views Company eMail

How to Calculate the Fault Level of Electrical Installation

912

In a 11000/440 V transformer, when any one phase of 11 KV supply fails (ie., single phasing), what happens to the secondary voltage and why?

TCS, Torrent Power, Secure Meters,

3 13484

Why HT motor of 3.3 kw or 6.6 KV, one side foundation ( mostly non drive end ) keep insulated from ground ?

2 2076




1KVA transformer of different frequencies of 50hz,100hz,500hz&1000hz. which one of these transformer has big size? Give reason

Ecil, Engineers India, MahaDiscom,

16 23449

what is the difference in inductance and resistance.both oppose the flow of current but how.resistance having + ve power in both cycle while inductance having both power.

5 13190

why it is important to earth neutral of 3 phase transformer?

IBM, RRB, ITC Indian Tobacco Company, UDS,

9 10855

From, which load current range ( upper - lower limit current)can Air circuit breaker used for in electrical circuit.

ABC,

4 4058

what is the difference between the HT Cable and LT Cable ?

Intergulf, Prabhat Cables,

28 113802




seromechanism

Bhel,

4 3953

ward lconard control

Bhel,

5 4698

percetans

Bhel,

895

bitumar

Bhel,

727

opkinson's test

Bhel,

1175

hopkinson's test

Bhel, NTPC,

5 31825

suri transmission

Bhel,

3074


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Un-Answered Questions { Electrical Engineering }

Can I use distributon class/transmission class Lightning arresots for protecting the building? If not why please explain?

601


why fractional pitch winding generally used in alternators?

1470


what is mean by dry frequency

1005


Why do we pefer VCB over OCB?What are the advantages of VCB over OCB?

1168


How to find ampere on ht side for selection of cable size ???

509






I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?

680


what will happen if earth of 33 kv cable (earthed system) is not connected to earthing pit?

737


when a pure dc signal is sent through a moving iron meter, what will it read?? dc or rms?? when a variable dc signal is sent through a moving iron meter, what will it read?? dc or rms??

852


Dear all, i completed M.E(Power Electronics & Drives) 2011 passed out having 78% so i need job in core side but i don't know how can i receive the calls from electrical companies and i uploaded my CV in naukri, times jobs etc.. In that iam not recieved any mails from good companies so give me best procedure plzzzzzzzzzzzzzzzzzzzzzzzz..... Thanks, K.Linga Reddy Email-id:-lingareddykmthm@gmail.com Ph no:-08015402078

591


what does mean of RCT and STR in diffrential CT?

2893


What happened if C.T mount at any cable or Bus bar in wrong direction . C.T going on proper work or not . C,T direction is essential thing to properly work.

345


What happen when change order of CT in GIS feeder?

163


what is capacitor voltage transformer?? how it is different from potential transformer?

777


How can we find the breaking capacity of a Load breaker switch (LBS) fed from 11 kv supply??ex:50KA, 26kA etc???detailed step vice answer pls.

655


What type of wiring series or parallel is used for conventional and addressable type FAS & why?

593