Electrical Engineering Interview Questions
Questions Answers Views Company eMail

How to Calculate the Fault Level of Electrical Installation

967

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 13931

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

2 2141




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 24042

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 13474

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

IBM, RRB, ITC Indian Tobacco Company, UDS,

9 11040

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

ABC,

4 4155

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

Intergulf, Prabhat Cables,

28 115788




seromechanism

Bhel,

4 4011

ward lconard control

Bhel,

5 4803

percetans

Bhel,

927

bitumar

Bhel,

759

opkinson's test

Bhel,

1216

hopkinson's test

Bhel, NTPC,

5 32062

suri transmission

Bhel,

3171


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Un-Answered Questions { Electrical Engineering }

IF I KNOW THE AREA OF CROSS SECTION OFTHE WIRE , WATTAGE OF THE LOAD ,VOLTAGE SUPPLY WHAT IM GIVING TO THE LOAD AND ALSO POWER FACTOR OF LOAD ....... SO GIVE ME FOR WHAT AMOUNT OF CURRENT I SHOULD USE WHICH TYPE OF CABLE?

643


difference between ac series and parallel circuit

729


What is the formula to calculate the no load current of a single & three phase induction motor

960


Dear sir, How to calculate 3.5 core pvc aluminium armoured cable meter wise carrying amps rating.Please give the solution with a good example.

472


how harmonics generated in induction furnance? how minimise it?

817






Why we use Electrical energy rather than any other type of energy, mostly? Explain behavior of open secondary CT and short circuited secondary PT in energized condition?

649


how a flip flop can be used as a latch?

735


can we find the inductance of a induction motor?

761


what will happen if multimeter(selector switch at DC voltage) and terminal at current is connected to DC supply?

760


what's producer of XLPE cable laying in undergroung

859


What are books to be referred for KPTCL exam?

2322


In ACS 1000 drive we are using 12 pulse converter,why don't use 3 pulse converter.

757


what is the purpose that we use PLC system in power system

2757


How 3 phase invertor works?

632


How we can calculate the life of Lead acid battery

449