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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

HRC full from

6 7944

what is the relationship between current&voltage in practical purpose ?

Indorama,

1 5060

Where is 2 phase supply used commercially?

NTPC,

3 8816

why the rating of dc generator is in kw where as rating of alternator is in kva?

3 25387

HOW DISTANCE PROTECTION IS DONE IN EHV TRANSMISSION LINES? WHAT IS THE BASIC TECHNIQ OR FUNDA USED BEHIND THIS ? SPECIALLY EXPLAIN?IMPEDANCE METHOD.

ABB,

2 7319

dear all, in motor operation , motor is of 100 hp and bimetal relay setting is 130 amp, if relay is getting tripped on 120 amp balance current what can be the reason? Relay is newly replaced. I dont know but is there any frequency effect in thit case? Can frequency variation affect bimetal relay operation?

1 3737

how the percentage impedance affect the transformer loading when connected in parallel.?

1 4757

WHEN THESE TRANSFORMERS WINDINS CONFIGURATION ARE USED? SPECIALLY EXPLAIN REGARDING STEP UP AND STEP DOWN KEEPING IN MIND.AND REGARDING LOAD ALSO. a.star to delta b.delta to star c.delta to delta d.star to star ALSO EXPLAIN WHY V USE 415/415 TRANSFORMERS IN TUBEWELLS?

ABB,

1 4017

.if the vector group of two transformers is not same n tey r connected in parallel operation then what will happen?

ABB,

2 6258

PLZ EXPLIN ABOUT CLASS PS CLASS CT .WHY THEY R DESINED AND FOR WHAT PURPOSE?WHY OTHER CT CANT BE USED AS PS CLASS CT? EXPLAIN IN SIMPLE LAUNGAGE IF POSSIBLE PLZ GIVE CIRCIT DIAGRAM?EMAIL-RAJ_SINGH_0376@SIFY.COM

ABB,

2284

what is meant by motor startup supervision & motor load jam protection ?

ABB,

6034

what is meant by trip circuit supervision & directional or non directional over current ?

ABB,

1 5778

What is the minimum distance between taransformer (say 2000 kva)and its earth pit?

Bhel,

2 6211

if the 10 hp motor name plate indicates rated current as 13.6 amp the what will be the thermal relay setting? Why? And in how much time relay will trip at the set value?

2 5811

why we use Bus earth truck and Cable earth truck

5 38125

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Un-Answered Questions { Electrical Engineering }

Explain the experiment on ward leonard method of a speed control on a dc shunt motor with an suitable circuit diagram.

2606

what is the difference between ac motor and dc generator

1873

how to calculate vfd o/p voltage by frequency

2183

WHAT IS THE FAULT WHEN 100HP TURBINE MOTOR TRIPS, LIST THE FAULTS AND ITS TRABULESHOOTING TIPS.. MY AUTO TARNSFORMER STARTER TRIPS

2099

This is urgent!! What is a Thyristor-based 3-ways selector switch with Zero crossing control? how does it operate and where is it mostly found in a system?

2083

plz send me the procedure and syllabus for mseb exam

3875

Define unilateral circuit?

1259

how many synchronous motor are there in any power plant

2018

Write the force balance equation of ideal dashpot element.

1344

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

2147

How to calculate Grid rotor resistance(GRR) losses in slip ring induction motor?

4294

What is cross over distortion? How it can be eliminated?

1313

Difference between a pilot wire and a normal conductor?

2062

in parallel operation of power transformer why the distance between power transformer and capacitor bank feeder is necessary to know

1831

full form of flry b

4182

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