Electrical Engineering Interview Questions
Questions Answers Views Company eMail

1 kva how much amps? How to calculate ?

L&T,

2 7401

in my industry we are using 3 step up transformers for induction heaters..i.e 415/580v and other are 11/440v.in power consumption does a step trnsformer makes any difference compared to step up?? plz explain

1411

which is the best institute for PLC,SCADA,DCS in hyderabad

1861

WHY SPEAKER OUTPUT IN WATTS??

2 3404

if we give 60 hz single phase supply to the transformer used in europe , than what will happen

Core Logic,

1493

Is there any decided or standard frequency to check the meager testing of transformer, DG set, LT Panel in the industries in a year. I means how many times we should be check the same.

2 3629

which will glow brighter?bulb 1 (110v,100w) and bulb 2 (230v.200w) series connection

EnPower India,

6 6808

Difference between induction motor and synchronous motor? i Think Synchronous motors operate at synchronous speed (RPM=120f/p) while induction motors operate at less than synchronous speed (RPM=120f/p – slip). Slip is nearly zero at zero load torque and increases as load torque increases am a right pls guide & send Other Comments

Jindal,

5 6007

Why is the earth fault relay connected to the Yellow Phase?

4 8305

why extension in transmission tower is made?

1 3366

what is the different between counterpoise earthing and pipe earthing?

1 9090

In case of motor Power Factor Generally We Apply A Capacitor But How Can We Know That A Motor is Running On Very low Power Factor And What Rating Of Capacitor We Have To Place And Tell Me Conversion Of Micro Farad to KVAR>

2 2982

do we convert single phase line to three phase at minimum cost?

1 3256

Is it possible to control the power in transmission lines by remote controlling method?? if yes explain in details???

1 2626

why the blede and jow of isoletor demage in substation?explan.

1 2473


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Un-Answered Questions { Electrical Engineering }

What is stepper motor. What is its uses?

629


how oltc works in rectiformers of higher rating (27 mva,200v dc,120kamps) please provide me full information with diaggram.

1684


why 15 kw motor winding resistance is low then 5 kw motor winding resistance?

2355


In electrical what is earth(ground)connection, wht is the importance of it, why it is recomended to maitain below 3VAC between Neutral and earthspecially in PLC used machines?

1736


What happens if the series current double?

969






how does ELR works? explain

2121


How cable from Kit-Kat to main switch, from starter to motor are designed?

1546


what are the installation procedure of high voltage power transformer,CT,CB&PT?

1584


How to calculate capacitor bank value to maintain unity power factor with some suitable example?

642


what's the requirement of Dy11d0 connection of 3 phase transformer?what's use of it?

7336


What are the advantages of using distance protection schemes as opposed to normal overcurrent/ earth fault protection on high voltage feeders.

2987


solar inverters was not connected to the nuteral link .this nutwral possible to any other systems

1303


Write the analogous electrical elements in force voltage analogy for the elements of mechanical translational system.

693


What are the advantages of stationary armature and rotating field system?

682


detailed procedure how we calculate cost for pcc m10 and rcc m20 including centering and labour excluding steel/ iron

2586