Electrical Engineering Interview Questions
Questions Answers Views Company eMail

C.S.R. and where are they use in electrical systems

1 2745

what irequirment need to be followed when working on live equipment

1278

If UG power cable both ends are to be earthed or what? If not why?

1472

which is the best book of electrical objective for placement

1 13202

How is the AVR working?

1 2971

what is the importance of earthing system on the generators big capacity and small?

1290

how to calculate the output power of vfd , please help me.

1 3858

Under Ground Power cable earthing is required at both end or single end? and reason for the same

3 4788

we convert 66kv to 33 kv to 11kv to 440v. why can't we directly convert 33kv to 440 ?

EMC, Jakson, L&T,

9 37451

why using 3 phase

1 2997

derive the e.m.f equation of transformer

2 9412

sir,in our plant we r using SATEC PM172E power reading meeters in HT panel side it is monitoring the MB data smart viewer(sever).but last one week we did not get readings inthe server only available in meeter.tell me how communicate meter and server. and also what steps we take for checking.

1761

could an induction motor be used for regenerative braking in electric-train control? in this type of application would some scheme have to be devised to obtain low synchronous speeds while braking? would induction-motor drive, therefore, be suitable for passenger service?

1565

what are the principles of a booster converter?

1542

what is power factor

UltraTech,

4 5025


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Un-Answered Questions { Electrical Engineering }

we have two generators different capacity on 15 MW and other 6MW at 11 KV , 15 MW gen. bus short level current 40KA,and 6MW short level current 25KA,, length of cable 100MTR between 6 MW from 15MW gen. for bus coupling . kindly tell any one can we use both NGR OR one NGR from any GEN. BOTH NGR has diff. rating. Tariq pakistan

1193


Is it true that in the 3 phase transformer, the limbs of the core are at 45 dgrees to each other. if true, why?

1564


how to calculate magnetic force genrated by a coil ?

1697


what is mean by descripiency relay? & wht is its ansi code?

2591


The efficiency of a 100kva transformer is 0.98 at full load as well as half load , for this transformer what is the Copper loss at full load ?

1778






An ELHNC 80amp 240v 30mA RCD is tripping periodically, every 30 - 180 seconds is it safe to disconnect the protection circuit?

1586


IF I KNOW THE AREA OF CROSS SECTION OFTHE WIRE , WATTAGE OF THE LOAD ,VOLTAGE SUPPLY WHAT IM GIVING TO THE LOAD AND ALSO POWER FACTOR OF LOAD ....... SO GIVE ME FOR WHAT AMOUNT OF CURRENT I SHOULD USE WHICH TYPE OF CABLE?

1408


how many electricity poles are there and what are the names and their sizes.

1411


why power factor is important?

8203


what you have to see after one week or month from the day of installation of transformer ?

1200


What is the disadventage of gland earthing(power cable) if any. ?

1540


I HAVE BEEN SELECTED FOR APGENCO A.E(ELECTRICAL) 2008.HOW MUCH WEIGHTAGE FOR INTERVIEW AND WRITTEN TEST.HOW I HAVE TO PREPARE. PLEASE GIVE INFORMATION IF U KNOW.WHAT ABT G.D THIS TIME.CALL RATIO 1:2

2398


Load break swicth maintenance procedure.

1298


how to electrically make connection to ferroli GN2N?

1439


WHY MOSTLY Rph IS USED FOR CONTROL CIRCUITS AUX. SUPPLY ?

2016