Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Why is a thicker conductor necessary to carry a current in A.C.as compared to D.C. ?

1 3996

Then what do you call a transformer that is installed on the ground?"

1 3522

why does connected a indutor with mnsformeretering core of current transformer ?

1647

how to set the transformer differential relay

Divis Laboratories,

1 5850

in 132 kv substation ligtning arrestor(120 kv) connected to line. but line voltage comes to 132 kv, it operate or not???

Divis Laboratories,

4 14748

voltage of a ckt is measured by volt meter having an input impedence camparable with the out put impedance of the ckt Eror caused is 1. Gross Error 2. Errors due to lloading effect

GATE,

2 3260

when the control mechanism is present for an ammeter(1-10A) and 1A current is apllied what will be the reading of the meter?

GATE,

2 3636

Relay setting for earth fault of reciprocating and centrifugal compressor motor feeder.Setting will be different or same?

Reliance,

1 3330

what is cathodic protaction?

1497

The error in a single phase energy meter where pressure coil lags behind applied voltage by 88 degrees and pf is 1) upf 2).5lag

GATE,

1 3931

why we use 20 KV, 10KA LA on 22 KV Line

2 5988

WHY TRANSFORMER RATING IS MENTIONED IN KVA RATHER THAN KW

5 8357

HOW SKIN EFFECT REDUCE THE CROSS SECTION OF THE CONDUCTOR

2 4504

What is eddy current & eddy current loss ?

2 6552

how to avoid Saturation in C.T?

1574


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Un-Answered Questions { Electrical Engineering }

why we can use 1 to 5V dc

1518


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

2325


What is the de rating factor of cable? What is the importance of the de rating factor in cable selection?

1627


PLZ EXPLIN ABOUT CLASS PS CLASS CT .WHY THEY R DESINED AND FOR WHAT PURPOSE?WHY OTHER CT CANT BE USED AS PS CLASS CT? EXPLAIN IN SIMPLE LAUNGAGE IF POSSIBLE PLZ GIVE CIRCIT DIAGRAM?EMAIL-RAJ_SINGH_0376@SIFY.COM

1720


What is K-rated transformer? What is the use of it? What can be the size(pls provide calculation if possible) of K- factor transformer for 550kW,690V motor operating with drive (VFD)?

1802






Why compensation is necessary in feedback control system?

779


What is the effect on Power factor and capacitor when your company load is more than 70 % of welding transformer

1348


what is mean by kneepoint voltage? when it will happen? ( my doubt is, if CT secondary is open means ct get saturation or blas? what are factors are required for calculations? plz give currect anws:

1534


when we have to use UPF wattmeter and LPF wattmeter? what is the difference between UPF and LPF wattmeter in terms of construction?

1929


there are cam operated switches - why we call cam operated , What is cam ?

1478


How we calculate the Multiplying Factor of Kwh meter for 3 phase alternator.

1417


sir i have cleared the apti test of EIL held on 15th march and my interview will be in new delhi on 2nd june.i will be very much helpful if u help me regarding the type of interview questions comes at EIL.(URGENT.........PLZZZZZZZZZZ...............)

1566


Is there possible to Test Transformer for Overfluxing Capability. Or is there any firm who does Overfluxing Test on Transformer?

2645


hai iam arunkumar. i have applied for an section enginner in rrb. i want lat 5 years solved question papers. if u have please sedn it to arun30682@gmail.com

1316


If a air condition consume 2.50 to 3.00 amp then how much it will consume in watts if it is running 10 hours out of 24 hours????

1455