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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

DIFFERENCE BETWEEN GROUND AND NEUTRAL?

4 7340

DRAW THE DIFFERENCE BETWEEN GROUND AND NEUTRAL IN BOTH SINGLE PHASE AND THREE PHASE?

2 5118

what is pmg and its use

2 4414

which type of motor using in drilling machine ? & who to produce very high torque in drilling machine?

National Drilling Company,

1 5015

A transformer is used to light a 24volts,70watts lamp from a 240a.c main.The current in the main cable is 0.35A. Calculate, (1) The efficiency of the transformer. (2) the current in the lamp.

1 3564

what is the difference between vector scale and vector diagram?

1 4526

How we select the vector group of 3phase power transformer?

wbsedcl,

2800

What is hysteresis loss?

PWD, SPML,

1 5146

is there any role of power factor with frequency variation? and how we can manage the frequency variation?

Wipro,

2124

pls tel me the electric train traction motors name plate details like rpm,torue,voltage,amps,watts..ect..

2118

mcb kitna type ka hata hai aur uska pura naam please bataye

2 6427

1ampear me kitna watts hota hai aur elcb ka pura naam kya hai

Al Khayyat, Alpha G, BEC, Bhel, CGS, Electrical, Fiem, Firmenich, HLG Habtoor Leighton Group, Jash, Kandia, Maruti Suzuki, Minda, NTPC, ONEIC, Pace Process Controls, SMTC, SR, Sunrise Electrical, Sushil Enterprises, Suzlon, Voltage,

18 166329

why we use ac supply as 415 volts instead of 415 v why we cant apply 230 v for dc

2458

how to find number of run for transformer & alternator secondary side? give the example.

Powergear, Regen Powertech,

2 5424

which on of the transformer have more core losses and why? 1. Distribution Transformer 2. Power Transformer

5 9095

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Un-Answered Questions { Electrical Engineering }

what is the function of gss in the dg set.

2027

Explain cos(theta) and Sin(theta)

2163

what is a speed of rotor when we give supply to stator of 50hz and as well as rotor of 60hz of an induction motor?????

1691

where reactive power is used

2107

when it is possible kvrah lead & fundamental kwh be equal in electonic trivector meters (3 ph)

2050

What test must you do before powering up a circuit that you have been working on?

1913

What is the best thing to protect the motor from running over full current. CT or O/L or pressure transducer at the given pressure rating

1595

how to select the double earth conductor if 21A full load?

2113

What is purpose of reactor?.What is different between line and bus reactor?

1996

In Power Line Communication (PLC) the wave trap is used to block communication signals from entering neighboring lines. My question is this: Why do they allow for different filtering arrangements on these wave traps? Isn't it always going to be a low pass filter since we want the power frequency to go through, and the comm signal blocked?

2037

what is difference between cpp electrical system and refinery electrical system

2361

working principle of AC Servo Motor with its construction

8935

why transmission is only 3 phase and not 2 or 4 or poly phases

2189

how we test a 3 phase motor on single phase supply....? HOW WE RUN A 3 PHASE MOTOR ON SNIGLE PHASE. supply for testing..? how we verify of a 3 phase motors 6 wire & name thame a1/a2/a3..b1/b2/b3 and c1/c2/c3 for connecting star delta starter ........i have only 1 phase supply ? help forum..........

5288

What is the approximate value of stacking factor?

1210

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