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 7130

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

2 5009

what is pmg and its use

2 4304

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

National Drilling Company,

1 4924

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 3480

what is the difference between vector scale and vector diagram?

1 4460

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

wbsedcl,

2735

What is hysteresis loss?

PWD, SPML,

1 5055

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

Wipro,

2057

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

2054

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

2 6300

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 165659

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

2407

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

Powergear, Regen Powertech,

2 5321

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

5 8907

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Un-Answered Questions { Electrical Engineering }

At what speed an electric car can run with 2 HP motor of weighing 400 kg?

1826

Why should we hire you over the others waiting to be interview?

2841

What are the causes of having an rmu explode after installation? And how do u treat the bushings of an rmu?

2522

If I want to lift the water at a height 50m from ground level through two inch(diameter) metal pipe then what is the capacity of motor pump is required? is it possible in single phase supply or not?

1894

HOW TO SELECT THE COPPER CABLE SIZES OF MOTORS,TRANSFORMERS?

2118

WHAT IS DIFFERENCE BETWEEN CAPACITOR AND CAPACITANCE?

2033

what is 3rd Harmonics? how it is generated in alternator

9484

what about electrical pannel.? What is meant by plc pannel.?

2288

Installation resistance for whole installation of 16 kva & 25 KVA DTRA a) Between each conductor b) between conductor to earth c) installation resistance for each apparatus, each conductor to earth d) earth resistance for the system of earthing

1921

what is meant by poly phase induction motor ? how its operating by single phase or three phase?

2156

what is a synchronizing lamp ?

1643

defination of lines

2004

What is the basis for framing the rules of block diagram reduction technique?

1524

WHAT SHOULD BE THE BEST CURRENT RATINGS (PRIMARY / SECONDARY)FOR A CT INSTALLED AT THE INCOMING 11KV PANE? WILL IT BE CALCULATED ON THE BASES OF MAXIMUM DEMANT VALUE OR ON SUM OF ALL TRANSFORMER'S KVA? NOMALLY MAX DEMAND REPRESENT THE MAXIMUM OPERATING LOAD OF THE PLANT AND TOTAL KVA OF (SAY 5 NUMBERS TRANSFORMERS) REPRESENT THE CONNECTED LOAD. WHICH i.e. MAX DEMAND KVA OR CONNECTED KVA ARE BETTER TO USE FOR CT CURRENT CALCULATION? PLEASE ANSWER.

1919

How will you justify IR value and Charging voltage of any motor,transformer and Cables.......???? . . . . . . . . Plz tell me any body Baljeet Singh, engineer_89@refiff.com

2121

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