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Electrical Engineering Interview Questions

What are locations arc protection relay is fixed.

1174

Zone of protection and tripping scheme of arc protection relay.

1240

High speed earth switch operation with diagram

1685

Difference in load break switch, isolator and circuit breaker.

2726

If breaker is undefined position, first step to do.

1595

1149

What is double throw isolator and single throw Isolator.

5282

After taking shutdown of 11kv feeder, if you see 5kv by phasing stick in the cable side, is it possible to close earth switch in cable.

1664

What is the main feature of v/f control?

1655

will 1050kva DG set withstand for back charge of 16MVA transformer

1247

How to calculate percentage impedance of a power transformer.

1735

why we earth only one side of a power cable. And which side is advisable to earth.

1788

What is the difference between earthed and unearthed power cable.

2067

What happen if a 18 watt fluorescent tube is used on 36watt choke,which one damaged or not damaged, if damaged why that damaged?

2075

3 phase induction motor rotor field rotate at synchronous speed w.r.t ?

2350

Un-Answered Questions { Electrical Engineering }

full form of flry b

3348

what is the concept of directional power?

1318

A Question Like A Wire Is Wound Whose Resistance Is Some 132. 44647 Ohms. If A Voltage Of 30 mv, 296 Ma Current Is Applied To It What Is The Resistance.

477

For R-L or R-C ckt,time constant formula is L/R and RC respectively and its unit is in sec.Pls tell me the derivation

2460

What is stacking factor? What is its approximate value?

517

why ss stablity limit is more transient stablity limit?

1481

I am going to appear for the RRB Chennai Section Engineer online exam. Please send me the question papers from 2001 to date to my mail id:upendrakrishna20@gmail.com,plz send me ,or send any other rrb papers plzzzzzzzzzzzzzzzzzz

1464

what is mean by dry frequency

1768

Practical condition in 400KV Sub station:- Breaker(open) , isolator(open), Earthing (close) at both end e.g A & B. Now Open A Stn Earthing than Open B stn Earthing (Which have a 50MVA reactor) , AND suddenly show R,Y,B phase 704KV,573KV,118KV respectively. Que is without closing of breaker how it is possible.???? My Whats app No:07621840498 for Further Discussion. Pls experts suggest.

1394

In aerodynamic turbines which element is NOT there a.stator b.compressor c. Fuel intake system d.fans

1359

I have 1500/1A CT If i connect this CT in 6.6KV bus bar means what will be the voltage present in CT?

1368

what is meant by power and distribution transformer ?

1342

The 3 phase Delta connection RB=440V, BY=350V,.......* is Line to Line voltage RY= ? And Formula....?

909

what is the easiest method of short circuit current calculation ? pls. derive with a mathematical example in real life application.

1784

why the value of k is more in shell typr transformers?

1340