Electrical Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

what is bushing in transfermor

Bokaro Steel, Visa Steel,

7 9446

what is electrostatic presipitator in thermal power plant,and why it is used?

ACC,

2 6318

Why we oil in tranformer/

5 7396

how will you calculate rated Primary and Secondary voltage and Current for 2500 KVA, 11kv/443V Transformer

2 5020

how calculate cable size in squre mm, when the load is given by in kw? do u have current rating chart of elctrical cables?

4 12329

I have three phase 400 KW,390 A MOTOR.For this motor which type of Cable is required....specifically rubber cable required. Can anyone help me..

5 9010

Why celling fan rotates in anticlockwise direction and table fan in clockwise direction ? Give technical reason.

5 18411

how can we phase identification in a distribution line,how we recognise that which phase is coming for a house hold connection.help me............

2075

Which are resistive loads & which one are inductive loads : Refrigerator, Split air conditioner, ceiling fans, well pump, fluoresecent bulbs, T.V, CRT Monitors, Adsl Routers, C.P.U, Printers, Deep Freezers, Speakers, DVD Players, Microwave oven etc. ? Output Power for these Appliances Would be same like this : P = V * A * P.F Or would be changed ? thanks

3962

1. name the relay for protecting transformer 2. Current Transformer 3. potential Transformer

1 3947

Are Refrigerators & Deep Freezers the Inductive load ? How to calculate the Power Factor & hence the Output Power for them ?

5105

How can we calculate the power factor of an electrical appliance ? Is there any formula ? Is there any meter around to calculate it ? And how to use that meter ? thanks

Essar, Philips,

2 6841

upto how much low RPM we will run the commercial motor which is run through VFD without any problem occurs in motor.Motor rating Duty is S1 & RPM is 1400.

ABC,

2146

how can we use isolator as breaker

4 5997

what is the formula to calculate kva genset required for a given load in kw.

3 12960

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Un-Answered Questions { Electrical Engineering }

what is efficient motors and how it is different from normal induction motors

1913

What effect does a very low impedance have on the Voltage regulation? On the short-circuit current?

6298

What is sink and source?

1186

What do you mean by Stimulastion Test in Diesel Genarator / Why & when it's conducted ?

1649

What are the factors which influence the choice of specific magnetic and electric loadings of a synchronous machine?

2096

how open delta PT works & what is its construction?

2250

What is core CT & it's function?

2070

when elecromagnatic waves are propogated in a wave guide?

2007

How to perform a DC resistance test In Alternator and their proceduces?

1758

How to Decide(calculate) Bush bar size for copper and aluminiam ?

2130

what is the criterion for selecting vector group of Transformers ? i mean how to decide vector group of Generator transformer, substation trasformer and transformer at consumer end

2354

Instrument connected to a single phase supply

1695

What is self exciting?

1699

What is the Resposiblity of Electrical Utility Engineer

2924

What are the types of the glands and difference between single and double compression type of cable Glands.

2084

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