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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

WE know that for Inductor X=2pifL,In DC f=0,then X=0 so,V=IX=0;But In the DC excitation of rotor of AC generator,DC motor field coil which coils are inductor so why does not applying DC voltage short the rotor coil of AC generator and field coil of motor?If it would then DC source might be damaged but it is not happened. Why does the strand conductor of Electrical power transmission line make twist?

4387

What is the basic difference among IPS,UPS,EPS?

ABB, Navana,

2 18538

Earth leakage relay basic knowledge principle

Radiant,

2183

HOW to speed control of induction mototr using scalar control

3 6149

if one of the phase is failed to 3 phase IM. what will happen?

6 9224

how we calculate electrical load on a building according to area?

HFCL,

2798

why transformer are rated in kva.

Dalkia, Nalco,

5 8669

What are the necessary conditions for production of rotating magnetic field.

BARC,

4 10141

what is the purpose of shading ring or shading coil in electrical equipments.

BARC,

4479

what is differnce between oil transformer & dry type transformer ???????????

2 6425

Generally the incandescent lamps in bathrooms fuse due to high voltage at night.What is the simple solution of this problem?

4 5781

What should be the protection scheme for a 15kw, 3-phase motor working in a lathe machine.

2066

Why voltmeter is not connected in seris & ammeter connected in parallel ?

5 28210

why we use post insulators in no ofstacks at substation for supporting equipment ? why we not use single post insulator

3 5275

which type of cabel

DMRC,

2405

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Un-Answered Questions { Electrical Engineering }

What is the difference between electronic regulator and ordinary electrical rheostat regulator for fans?

1102

How to detect voltage vector shifting in interconnection protection.

1905

State the frequency for rc phase shift oscillator?

1124

what is the use of the circle diagram

5616

i installed 100kva ups. what KVA genset they should provid in input side? plz any update formula or ans with reason.

2341

What is conventional thermal current (Ith)

4443

what is the difference between torque induced and torque load?compare them with respect to dc motor?

2305

what would u consider to be the basic purchase order information you would need to proceed with a cable inspection assignment?

1905

what is the difference between ac motor and dc generator

1858

role of europe union in UK safety legistlation (electrical safety)

1772

Explain using drawings what is reverse PID action w.r.t PID controllers.

3453

if i get a drop in my 1st year and the i clear my 2nd year and 3rd year all clear and i dont have any back logs so can i be able to sit in campus selection??

1855

How to prepare electrical preventive maintenance plan & shedule of machine tools in manufacturing unit.

2170

Define maximum demand?

1067

What are the special cables required for explosion proof wiring?

3577

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