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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

Why the TNC switch is called as Memory switch

Reliance,

1 4050

how to understand the controling circuits example star- delta-starter controling daigram please let me know

GMR,

3 8319

how many earthing should give for transformer body and nuetral

GMR, GOMS,

5 9615

i am electrical and elctronics engg passed out in 2009 want to attend for reliance placements.plz send me apttitude ,technical and hr question answers to my mail plz. my mail id-kat.bindas@gmail.com

1983

Is C.T will sense the current in both direction. As i know the C.T will sense the current in only one direction.

2 5941

What is the diffrence (Technical & Construction ) between CBCT & Normal CT?

1989

Why the cost of CT increases with the decreasing of its CT Ratio (Technical Reason)?

Vedanta,

2 6131

How the size of transformer decreases if we increases the frequency?

2 5303

Can we use delta-star neutral grounded 3 phase power transformer bi-directionally.

GMR,

2 5651

how to synchronize 3 phase slip ring induction motors of different ratings.

GMR,

2241

can we use existing delta star with neutral grounded,step down(6.6kV/415V), 3 phase power transformer bi-directionally.

GMR,

3 6102

1.differance between onload ups and off line ups.

CTS,

1 6088

want happens when a dc is given to a commutator

2 5297

A three phase transformer 460v primary 220v secondary (three phase four wire system.) Why did we get 460 volts across the neutral on the secondary side?

3 6747

I have 12MW gas engine based power plant its running parallel with grid. my problem is When cpp run in island mode(without geb) that time geb transformer power factor is 0.2 lagging. When cpp run with parallel that time power factor is 0.94 lagging So how can i maintain power factor ofgeb transformer in island mode 0.9 lagging?

SPCL,

1 2793

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Un-Answered Questions { Electrical Engineering }

Sir, I m 3rd year student 4m DCE and want to do internship in siemens or l&t or any other mnc related to electrical engineering. please tell me the procedure 4 same and oblige me

1942

1. The DC generaror,s induced output emf is connected with a DC motor(as load). when increasing the load of the motor by using brake drum or any way. what are the parameters will changes in both motor and generator(voltage, current, resistance, frequency, speed, torque, power, flux etc...) 2. Similarly for AC generator and AC motor 3. similarly if using DC batteries instead of DC generator, What happens?

2246

Please explain me abt PQ diagaram in the power sector.

2377

Two electric lamps 40 W, 220 V each are connected in series across 220 V. What is the power consumed by the connection?

1369

What is Primary And Secondary Injection Test of Relay and Other Electrical Devices. How IT is carried out.

3451

can we find the inductance of a induction motor?

1932

What is contract demand in solar system?

1658

why ht motors are star connected?

1831

how to find three phase complex power in per unit and MVA?

2132

what is the difference between surge protection capacitor and surge arrestor

2268

what happen if drive input fail momentry at 48.5 HZ frequency?

1871

what is The difference between national electrical code and I.S.Code (electrical) and what is the value of NEC in electrical engineering field

1967

What is grid collapse? what is the reason for it?

2067

what is the relation between knowing of the distance between power transformer and the capacitor feeder in case of parallel operation

1939

what types of electrical & mechanical test conducted in switchyard?

2166

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