Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is difference between AC VVVF drive & Dc VVVF drive explain their working principle?

Apollo, OPS,

13 43719

why we step up voltage for reducing the loss, even if voltage and current are proportional anr resistance remains same

Sarhad University,

12 25037

how to select earthing conductor size of amy motor/panel etc.

Sony, VBB,

1 9410

How would we calculate the no of earthing pits required for motor /panel

APGenco, National Engineering Industries, Practical Viva Questions,

5 22872

send me the upsc conventional papers of 2006

Juniper Networks, Siemens,

1 3176

what is cogging and crawling

ABB, Ashok Leyland, Bharat Bijlee, BMRCL, MN Dastur, Siemens,

20 79554

for 500mw power production how many range of transformer set in unit please reply if three transformer use .

2 5957

What is power factof?

RRB,

21 22084

What is auto transformer?

ABC, Transformers and Electricals, US Consulate,

28 55602

Why donot sleep below the tree for night time?

12 25243

could mail me the question papers for the test.

ONGC,

1 3393

What is Cement

ACC, L&T, Reliance Cement,

11 17674

why the generating voltage in India is 11kV or why is it be transmitted as multiples of 11

ACC, Bhel, ECI Engineering and Construction, NTPC, SBL, Senthur Power Services,

34 112965

why electric shock due to dc is dangerous than that of ac

44 58138

What is the difference between online ups and offline ups?

Electrical Tech, GMR, Gravity India, HCL, Indus Towers, NIT, Pyramid, Techno Electric and Engineering, UBS,

44 206975


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

How to findout raw or ups power? its not indicated in socket,

1535


Is it possible to protect 3phase overload and earth fault of the 3phase system using two CT's.

1570


is the value of inductance depends upon the evalue of thitha in doubly excited machine?

1452


what are the Alarm, Trip & Safety equipment (Issues) present in Power Transformers pls Mail it to ashokbabunhce@gmail.com

1447


i am going to give the JSEB,RANCHI exam for power plant,so i need some samples of papers related to that,so please send me these papers by my mail id.

3004






How is the percentage impedence of a transformer fixed at design stage???

1493


what mean by analog ,digital,numerical meters and relays? say the example?

1755


what is meant by carrier aided trip protection in transmission line

3299


when the time of backcharging the transformer three phases only enough or three phase with neutral is must.from these which one is the best one.

1571


I have an existing old MCCB. ABB Model SACE, the rating are: Ue = 660 volts, Iu =1250 Amps, 3 poles, Ith (max) =800 amps at 45 deg C. I need a circuit breaker for my 3 phase motors, 380 volts 60 hz. the supplier required the minimum ampacity of the breaker to be 911 amps. can i use this breaker with rating of Iu =1250 amps but Ith = 800amps maximum?

1772


what is kondo syatem in eletrical traction

1657


what r the checklist while installing 500 kva transformer

1793


What is the name of the winding from which the supply is taken for load connections?

623


given data are load current & power factor cable core size? plz any one update the calculation formula

1386


What is meant by reset level of the relay?

674