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 33962

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

Sarhad University,

12 19154

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

Sony, VBB,

1 7895




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

National Engineering Industries, APGenco, Practical Viva Questions,

5 18804

send me the upsc conventional papers of 2006

Siemens, Juniper Networks,

1 1901

what is cogging and crawling

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

20 67409

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

2 4509

What is power factof?

RRB,

21 13024




What is auto transformer?

US Consulate, ABC, Transformers and Electricals,

28 43957

Why donot sleep below the tree for night time?

12 19688

could mail me the question papers for the test.

ONGC,

1 2021

What is Cement

ACC, L&T, Reliance Cement,

11 11715

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

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

33 89727

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

44 40561

What is the difference between online ups and offline ups?

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

44 187205


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Un-Answered Questions { Electrical Engineering }

1) Explain why we don't link the two earthing system ht and mv on a pole mounted transformer sub-station.

422


In control room of our one plant there is a continuously the incoming power goes to PC is vary,means in stabilizer it continuously indicate from high input to low and low input to high. what is the reason and its solution.

729


What is the height of DA, DAL, DB, DC & DDE tower?

796


at which voltage level arcing ground is occurs ??????????

759


How PSV sizing being done

920






hello friends this is krunal here.. i have applied for he officer train in hpcl electrical stream.. any one who have applied before for electrical stream please help me out.. post ur reply to my mail id: krunal_airforce@yahoo.com.. any tips, old questions for paper or any help will do.. plz help me.. your faithfully, Krunal Darji

647


how many testing is necessary for 27 MVA transformer?

779


at work we have a 3 phase motor but on testing one phase isnt getting a reading. it runs 24 hours a day all week. stops and starts well no noise or heating. the phase isnt down to earth.is it just a bad meter reading or not? phases one and three came up with a resistance reading of 0.4 but phase 2 couldnt get anything shows up as open circuit.

435


how does WTI work ?

734


what is meant by flywheel and its role in retardation test

971


What is power distribution criteria for converting single phase unbalanced residential load to 3 phase star connected balance system. Does total KW converted to 3 Phase. Means Divided by root 3.

876


´╗┐Due to velocity saturation, MOSFET reaches saturation a.Before Pinch off b. After pinch off c. At Q point d. Before Q point e. After Q point

923


can a 150 kva 3 phase 440v/230V delta-wye step down transformer can be use as step up transfoermer with connected loads at 440v side?

474


How Can you do Maintenance of ACB of 2000Amperes

877


what r the preventive maintenance of air compressor

815