Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is the value of 3 phase voltage?

RECPDCL,

7 3439

why do we need a 4th wire in 3phase 3wire transmission line

6 3798

What are the limiting factor for controlling maximum hot point temperature within a hydrogen and water cooled generator?

1 1448




resistance of transformer oil=?

HCL,

1 1644

What shall be minimum thickness of firewall in between two transformers and which code specifies it ?

1 11629

Three phase star connected PT transformer primary side one phase fuse is blown what will be the output in secondary side(Secondary side also three phase star connected)

1 1237

Three phase star connected PT transformer primary side one phase fuse is blown what will be the output in secondary side(Secondary side also three phase star connected)

Sun Pharma,

2 3819

what is the internal working of star delta starter

648




in a plug point why the hole size at the top is large?

TCS, Bhel,

9 6378

what is 'A' Check & 'B' Check ?

2 1576

What is single break or Double break related to MCB?

2 2297

How to convert KW to KVA or KVAR OR kvar/kva to kw?

8 46133

open circuit test when performed on double the voltage & double the freq, then what will happen with p.f and current magnitude?

Aarti Drugs,

441

what is an S.C.R. and how do they work?

GE,

4 2814

How line capacitance & line inductance varies with increase in height tower.

799


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Un-Answered Questions { Electrical Engineering }

Refernce currents are to be generated using refernce cueernts how can this be done

614


Why squirrel cage motor can only use with low starting loads ?

533


How line capacitance & line inductance varies with increase in height tower.

799


HOW TO WRITE A QUENTION ANSWER? I MEAN SHORT OR LENGHTHY ? OR FROM THE BOOK AS BOOK..... SOME TIME WE GIVE A ANS FROM THE BOOK AS LIKE BOOK ND WE GET MINIMUM 60% MARKS OR MORE THEN....... THEN HOW TO FILL THE Q-PAPER?

381


what is meant by re-rolling motor? how it differs from standard motor?

449


How to reduce the static electricity producing in solvent room? By P.D.Patil BioCon

565


What is the difference between Droop vs Isoch Control?

656


I would like to know that the fault curretn at base load and at 10% generation will be same? Fault level of BUS remain same with different generation?

351


Do any one know exacatly when the results for NHPC held on 8th march 09 for engineering trainees will be released ?. if so please post it, i'm eager to know it.

625


During Starter Panel Com missing I Found The Main Incomer 40Amp MCB 10KA Trip When Motor Change Star To Delta Motor Rating 20HP BUT When We Use Same MCB To Other Motor It Does Not trip Or What Is Necessaries for Star Delta Starter MCB SFU MPCB OR MCCB And What are The Breaking Capacity of MCCB in the Motor above 15HP

477


explain the function of brush less dc motor?

529


I am B.E.electrical engineer having 7 years of experience in Transformer testing upto 315 MVA.I want to khow how I can get the 'Electrical Valuer' License.

631


How you calculate the repturing capacity of a HRC fuse

824


1. Why is the speed of shunt motor practically constant? 2. Why dc series motor use to start with heavy loads? 3. advantages & disadvantages of separately excited generator over self excited generator?

462


Q.1:What protection will be used on HT and LT side of 33/0.4 KV, MVA transformer. Indicate capacities of protective device to be used. Q.2:Which types of back-up protections are used in the power transformers? What do you understand by the term over travel in the relay? Q.3:How star and delta connected winding transformer are provided from earth fault

502