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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

how to detect the presence of underground cable(while digging road)etc. -give the name of instrument

NTPC,

7 13319

how to measure the A.C flux .-instrument

NTPC,

8 12329

which subject is better to tell when hr asks the area of interest?..

2035

if step down transformer step down the voltage,will current will also be proportional step up. If yes then how transformer handle such a large current?

4 9936

What is the meaning of Fault level rating?

Balrampur Chini Mill,

1 10871

Why semi-conducting insulation is used in XLPE cables?

1 4924

I have a 600VA UPS for computer only. It holds for 20minutes only. 1. Can it be upgraded for longer period.? 2. Can it be used for one ceiling fan and a tube light? If yes, how to upgrade?

11 40829

what is the knee point voltage ? what is differtial rela? what is impedance and % of impedane? what is the postive phase sequance ? negative phase sequane ? and zero sequance impedance ? what is sortcircuit calculaion? why take calculation? define stabilty test ? why? what sentivity test? define merz protection ? what is the burden ? class 5p10, accracy, metering ct take knee point voltage test thet time what heppan why dont take knee point test to metering ct?

2708

how can we change the rotating direction of single phase AC induction motors?

Heubach Colour, L&T, MNM Jain Engineering College,

12 80098

why C T secondary are rating 5A generaly .

7 12724

why earth hole size is biggest in socket point.

5 9695

If DG runing time Neutral earth connection Dissconect what will be the effect in load and equipments.

GE, HP, Reliance,

3 8877

If DG runing time neutral is disconnected what will be the effect in Engine and Electricial panel.

HP,

2 6540

What is transformer break down voltage.And what is flash oil flash point.

HP,

1 5699

Why dc Supply used in Control circuit.

HP,

12 30172

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Un-Answered Questions { Electrical Engineering }

what shall be no load voltage of 132/33 kV transformer ? is it 33 kv of 34.5 kV

2144

What are the commonly used schemes for the bus zone protection?

1016

Why neutral point is consider as zero potential?

2563

What is the Nyquist criterion regarding control systems?

1047

What are the functions of temperature scanner in power transformer?

2144

Briefing the effects of ASR and ACR of a double closed-loop speed regulating system.

2215

In EDO ACBs what is a purpose of closing coil and motor, what is the operation of these devices are they inetconnected. means if we give supply to motor and by BCS we charge Closing coil,what exact is operation is and how it charge a spring of ACB. Sir if anybody has an wiring diagram please send me the link to operate and EDO breaker.

2111

Name one of major transformer company in KSA ?

1154

can i use ups power as a raw power for another ups

1939

Give atleast 20 alternating current apparatus and devices.

1738

what is the constructional difference between a power transformer and potentian transformer?

1715

what is the function and use of cable differential protection relay?

2871

what is the difference between the voltage of 5 volts capacitor and and 5volts battery?

1909

is it possible to say motor horsepower number without seeing name plate(when name plate damaged)

2045

Comparision of Air break circuit breaker, SF6 Circuit breaker and vacuum circuit breaker.

2318

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