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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 38019

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

Sarhad University,

12 22150

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

Sony, VBB,

1 8563

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

APGenco, National Engineering Industries, Practical Viva Questions,

5 20987

send me the upsc conventional papers of 2006

Juniper Networks, Siemens,

1 2509

what is cogging and crawling

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

20 72952

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

2 5245

What is power factof?

RRB,

21 16691

What is auto transformer?

ABC, Transformers and Electricals, US Consulate,

28 49236

Why donot sleep below the tree for night time?

12 22008

could mail me the question papers for the test.

ONGC,

1 2686

What is Cement

ACC, L&T, Reliance Cement,

11 14088

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 100379

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

44 49202

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 196579


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Un-Answered Questions { Electrical Engineering }

what is the use of the puls transformer in UPS & how it works???????????

1246


why we use 630mm single core cable for transformer secondary side and why two neutral cable

888


Can u Explain about the electronic trivector meter and the use of data converters in them?

1452


how does a liquid starter reduce the starting currents?

1183


what is the difference between online & offline caliberation of KWH meters. Can Digital meters be caliberated

1115






How do you determine the size of transformer radiators in a transformer?

1059


what will happen if there is a voltage leakage or current leakage in an electrical train

1081


I have c license but I don't know eligibility of Max Kilo Volts under the electrical licensing board.

815


can anyone provide me a amf panel control wiring using ec-2 relay?

1308


how to design coil turns ?

1154


What is Fire Panel ? How it works ?

1177


what would happen if reactive power (kvar)is increased (more)or decreased (less)? how much exact reactive power should be maintained? and what should be done for that

1351


I am a electrical engg. diploma holder,applied for junior engineer (electrical),Kolkata RRB. Have I to attend all electrical,mechanical&civil portion in written exam.???

14800


How can two 3 phase transformers of same KVA and Voltage be connected in parallel?

819


standard earthing rating for power line..

1298