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 HT armoured cable does not glanding

TCE,

4239

AC SUPPLY HAVING 230 V FREQUENCY REDUCED ZERO IF MEN TACUCHES THE SUPPLY WEATHER HE GETS SHOCK OR NOT?

8 10349

What are the drawbacks of HVDC system?

4 5942

I have 380.KVA Volva Penta DG set. Tell me how to calculate units from KWH reading....

3 6913

I have 380.KVA DG set how to Calculate the units from DG.

Ozone Pharma, Sperry Plast Limited, Sterling,

2 12295

While performing load test on DC SERIES MOTOR, does the voltage decrease slightly. Why?

2 6502

what is the difference in using the 125% and the 250% factor of safety in calculating circuit breakers capacity for motors,which is more reliable to use the 125% or 250%??

1 4580

sir , what happen if we decrease ( approx 3 inch ) the lenth of shaft in 110KW Induction , three phase motor. actually a 110KW motor is couppled with star couplling to 120TR compressor. When we doing maintenance in compressor it is required to skid the motor backword and resulting dis- alightnment . so we want to change the tyre coupling in place of existing coupling. so it is required to cut off the rotor aprox 3 inch form driving side.

2 4316

what will be the difference on output when 3phase I.M. is given a delta or star supply?

3 5388

The following equipment are installed ia a plant 1. 110KW Induction motor 4 Nos 2. 30 HP motor 3 Nos 3 15 HP Motor 3 Nos 4 7.5 HP motor 4 Nos what is total load of plant if one of each is stand by.

Blue Star,

3 5731

what use can we make of 3rd harmonic component

Bhel, General Motors GM,

5 13379

What is 100% protection of generator? Why 95% protection is used not 100%?

NTPC,

9 40711

What are capacitive,resistive,inductive surge absorbation? What is ferranti surge absorber? What is lagrangian cost? What is Px operator?

2001

how the voltage between all the three phase is zero can any body explain me

5 7495

what is the difference between energy efficient and high efficiency motors

2 6158

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Un-Answered Questions { Electrical Engineering }

WHY THE RATINGS OF THE TRANSFORMER IS 33KV WHY NOT OTHER???

2390

what is the id1 & id2 setting in differential protection relay of CSPC?

2793

Safety of on line ups

1950

what is the formula of starting current of 3phase and 1 phase motor???

2331

HAI SENT HPCL APTITUDE QUESTION PAPER, MY EMAIL ID IS angus_eee04@rediffmail.com,angus_eee04@yahoo.com

2262

hi this is hema, r there any books in particular for the preparation of the APPSC-A.E.E(electrical), if so please mail me the names ... thank u .

1925

what is the current density of copper & alluminium.

2063

Define relative stability.

1065

What is the difference between Droop vs Isoch Control?

2435

i have total 8 dg sets for synchronizing and 2 buscoupler,1 sectoin dg no 1,2,3,and 2 sectoin dg no 4,5,6,and last section dg no 7,8 ....if buscupler no 1 and 2 is off mode ..than dg no 1,2,3,will synchroniz of another dg sets?

1813

oil cooled transformer

2229

what is the sludge current

2121

why using transformer and thyristor switch in 3 phase apfc panel

2879

what is meant by 2 within a star in a voltmeter dial?

2088

Do inductive loads have distorted current waveforms ?

1945

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