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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

what is the difference between earth and neutral?

1 4461

what is the difference between earthing and grounding?

Bhel, Wipro,

6 10955

what is d check in dg 1500kva

2196

What is the earth treantment procedure?

2133

what is the abbreviation of MIMIC regarding control and relay panels of power systems????

Enercon,

1 12353

there is a power transformer 66/11kV in delta-delta connection has 5 feeder coming out from the secondary side. One of the feeder in it normally loaded (loaded than other feeder)and this feeder usually trips with double OCR causing the bank transformer to trip. Now if the load of this feeder is put on other transformer then that no problems occurs on that transformer or the load. However normally all the test(IR, PI, short ckt, open ckt,grounding test and other ) has been conducted for this but evertything transformer..... I am not geting what is the actual problem...

2 5359

HOW TO WORK A VFD?SAY SIMPLE METHOD

GE,

1 4511

Why do we pefer VCB over OCB?What are the advantages of VCB over OCB?

CEB,

2681

What is meant by Low Resistance Cable and High Resistance Cable.

1964

how to calculate energy of 3-phase motor?

Suzlon,

2165

25 kva 3 phase dg how many current will take per phase , plssssssss reply me

Bharti,

3 7008

Why does The speed of motor used in elevator remain constant irrespective of load??

1 2810

what is meant by CT`s saturation ? Can we use Metering CT`s with Protetection CT`s ?

2244

What are the advantages and disadvantages of oil filled transformers?

Mercantile Marine Department, Studio College,

2 16982

What are the main faults of DC generators?

Mercantile Marine Department,

3072

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Un-Answered Questions { Electrical Engineering }

In the N-series schneider reclosers. What is the difference between current during fault time and current at tripping? This appears in the Event log in an event of a trip out.

1916

explain the function of brush less dc motor?

2158

How to calculate approximate load loss of a distribution transformer by knowing %ge imp of transformer?

2288

How can I calculate per unit (KWH) fuel (Gas/ Diesel both) consumption 1MW unit?

2167

During regenerative breaking= A rotating magnetic field is reversed B slip is positive C torque is positive D slip is negative

2169

What is the general system requirement of alternator?

1903

DG SET BLOCK DIGRAM

2358

What are the criteria shall be considers for sizing Fuse and MCB? If the rated current is 10Amps what should be the fuse size / MCB Size?

1706

The synchronous machine excitation system explain

1878

I have 4 DG set with 1500KVA rating. system breakers are 11KV & alternator are 415 Volts. Between alternator & breaker one stepup transformer used. i want to Know what is max. resistance for body earthing & 415 & 11KV V Neuteal earthing. my fault current is 14 times for 2 sec.

2330

For an induction motor wat is the loading/unloading cycle duration or interms of L/UL ratio/ percentage?

2188

can we conduct the swineburne's test on a dc series motor? why?

2198

I have c license but I don't know eligibility of Max Kilo Volts under the electrical licensing board.

1771

what is booster? and how it is connected in a circuit?

2695

how to find ratio of CT & PT in 66/11kv 12 mva supply system ? explain with calculation.

2478

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