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Electrical Engineering Interview Questions
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Just a silly question but just to make my curious mind bac to normal - Why was not 67 and 67N relays built into a single relay as i have noticed that the R,Y,B CT wiring end up into the 67 relay while the common of the R,Y,B CT wiring end up into the 67N relay. Then it was better if a single relay was manufactured just like the distance relay (21). Another question i would like to ask is - how do we know where the 67 and 67 N relay has to be placed.why is it not placed at the transformer bay? In the substaion that i am working -i have noticed that it is placed between a breaker and a common double bus bar and this line bay is connected to another substation at a remote place which is furthur connected to a load. B U S______CT for 67 & 67N ______Breaker _____ remot s/s. B A R

1 2937

What should be the minimum depth of ground laid 66 kv ht cable?

L&T,

3 6652

IS THE ANY DIFFERENCE B/W GENERATORS & ALTERNATORS

 6 6913

what should be the value of proper neutral earthing resistance?

ABC,

3 6603

what is the minimum distance between substation wall and LT panel outer surface?

L&T,

3 11345

what is the IS foe lightning arrester?

 1688

How to calculate the Meter constant for the given Meter (by using any formula)

HCL, Viva,

4 75884

What is the difference between a Vacuum Circuit Breaker and a Load Break Switch?

 7 26023

Which motor is suitable for mixer grinders.

 12 21101

what is earthing/

B.Tech, CPCL, Mobiserv,

3 5162

what is the use of earthing?

CPCL,

1 4820

why we provided electrical earthing?

CPCL,

5 7961

explain the details about vaccum circut breaker and advantages?

CPCL, Unisol,

4 6188

Car battery + terminal allways biger than - terminal! Why?

 2 4196

why commutator is attached with only dc macine

ONGC,

8 10940

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Un-Answered Questions { Electrical Engineering }

What is main cause of cable's terminal point burned in Lug on high temperature although lug and cable selection is ok as per stantard and also tightness is ok as per situation. so please take in deep and tell correct answer thanku.

7393

can you send me the placement papers of electrical engg. from companis like NTPC,DRDO,IOCL,HPCL,BPCL etc.?If,plz send as soon as possible.Thanks.

1685

HOW WE CALCULATE CURRENT IF THERE ARE NOT PRESENT ANY AMMETER OR MULTIMMETER??????

1376

what is strip power factor?

1644

Hello sir, pls send me hpcl technical test papers .i am. Appearing for the exam.

2238




what is meant by impedance & transient protection?

1655

Either It Possible a dc Motor to Run On Ac Drive [ Ex : ACS 800 , Yaskawa F7 ] If it is Possible How Pls Inform Me dinesh_elect_eng@yahoo.com

1557

can i use 2000/5A Clamp meter to measure HT cable

1567

If we have 11 kv RYB Phase single core cable near about. Then wht effect and losses

1351

Dear sir, iam completed iti ncvt electrician 2000-2002 & diploma electrical eng completed 2008-2010 distance education in rvd university, still i got B licences only but my working company want C licences, how to i get c licencese pls reply me iam in critical situation thank you karthick 9841637803

1267

HOW TO SET THE EARTH FAULT SETTINGS IN ACB????????????

1695

What is different bewteen low or high impedance busbar protection scheme

3669

why we use four type of phase angle difference between pimary & secondry winding of a transformer & where we use them?

1628

What is the source of dependent source ?

1427

what is the transformer turn ratio formula and give some examples?

1929

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