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 33110

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

Sarhad University,

12 18602

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

Sony, VBB,

1 7752




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

National Engineering Industries, APGenco, Practical Viva Questions,

5 18294

send me the upsc conventional papers of 2006

Siemens, Juniper Networks,

1 1775

what is cogging and crawling

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

20 66247

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

2 4380

What is power factof?

RRB,

21 12411




What is auto transformer?

US Consulate, ABC, Transformers and Electricals,

28 43208

Why donot sleep below the tree for night time?

12 19221

could mail me the question papers for the test.

ONGC,

1 1871

What is Cement

ACC, L&T, Reliance Cement,

11 11280

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 87468

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

44 39392

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 185538


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Un-Answered Questions { Electrical Engineering }

What is the real function of reverse power relay in generator panel while syncronising?

672


How one can check the MAIN of a house wiring ?

626


Why AC & DC capacitor are use in UPS ??????????????????

702


what is the difference between fault current ant short circuit current?

1340


Is there any problem about which the drive (inverter) doesn't show/display the alarm and/or fault but instead of this , it doesn't work ? I want to know that could there be any kind of problem in the drive when the drive doesn't display the alarm and/or fault ?

679






Mr. mohh sahid m not satisfied for ur answer to the que weather the size of transformer increases or decreases withchange in fr for more detail go to the answer given by me

722


Why LED light has advantage of rapid reflection ,although other lights alse reflect.? and this light is considered to be best for transmission usage in case of Free optics

645


What are operating procudures & Safety precautions to be observed while operating OLTC in manual mode ?

708


Leakage current,un balance current which relay using for high voltage transmission?

836


What is trip and closing coil in cb? Why need of them

147


how to increase or decrease speed in DC shunt motor by DC convertor

725


what is the vvvf in the dumbwaiter?? or lift. what is the actual process?/

716


Name a govt approved university which have 100% online engineering course.

492


Electromagnetic torque developed by the motor is compared to shaft torque. A less B same C depends on motor design D more

687


various transmission tower like .,D tower ,K.C.O tower ,C.C.O tower,K.C.R tower ,C.C.R tower ,H.C.O tower in different tons.

1125