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Electrical Engineering Interview Questions
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which fault current is maximum: 3 phase short circuit, LG, LL or LLG?? why?? in one of the problems that i have solved, 3 phase short circuit current on an unloaded generator came out to be less than the LG fault current. can anybody please explain why.

Bhel,

2 9320

Sir I want questions for rrb sec technician gr III (electrical)

RRB,

1 4815

wat is the difference between BE &BTECH.

8 9332

what is meant by ceiling voltage, ceiling current?? pl reply asap

4 20577

How regulator control the fan speed?

4 21926

i need bhel question papers.

Bhel,

5 10069

generaly all power generating devices is expressed in KVA or MVA then why power ststion is expressed in MW

6 11584

why skin effect is decreases with decrease with frequency? why skin effect occur

Kirloskar,

5 12533

Can anyone tell me how a 12v battery is transformed to 20,000v at the spark plug

6 13954

What is the difference between reciprocating & rotary motors in AC units, which is the best one in terms of operation.

MacLellan,

2 11187

how to select cable size?

7 20576

what is the different betweem earthing and neutral?

8 9589

what is the term of desruptive voltage

Bhel, Energy Infratech,

5 8296

can induction motor run over the rated speed ?

ACC,

12 13599

Using 11000V/433V,3 ph,50Hz,500 KVA, what is the maximum capacity of motor in KW that can be connected and started at a single moment? Also explain about any calculations and formulas used in deriving the same.

4 6127


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Un-Answered Questions { Electrical Engineering }

why we can use 1 to 5V dc

1314


where lt & ht capacitor used

1590


in control panel, how can i measuring the distance between one bus bar to another bus bar. then now only for bus bar. in mpcb and contactor also. that means one mpcb to another mpcb how much distance? how can i calculate that.

1673


how to determine motor size for a fan application?

1627


solar energy light efficiency & disadvantages?

1390






how load of a turbo generator can be increased

1290


What are the different types of controllers?

471


i need the details about bhel exam.how to apply for that.please send to my email-id.thenmozhi2k7@gmail.com

1368


We are designer please help me calculate the size of 11kv cables from step up transformer to M.V panel, total load is 5 mega watt distance 900 feet (used aluminum type cables) please provided formula for calculate the cable with example.

1053


Why can't we parallel Voltage transformer secondary circuits?

788


RESPECCTED SIR/MADAM- I AM PRERING FOR SECTION ENGINEER (ELECTRICAL) RRB CHANDIGARH PLEASE SEND ME SOME PREVIOUS YEAR QUESTION PAPER OR MODEL PAPER.MY EXAM IS ON (30- NOVEMBER 2008).I AM VERY THANKFUL TO YOU. FROM- HARENDRA SINGH YADAV

1435


Can anyone explain me about the RLC based Impulse high voltage generator and how to and operation of Series resonant High voltage reactor...?

1251


How many sprinklers should be in one pipe line?

1254


what is the main function of capacitors in mccs.

1094


Explain (in simple ) - root mean square. whats its role in electrical fundamandal.where its used

1619