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Electrical Engineering Interview Questions

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,

9320

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

RRB,

4815

wat is the difference between BE &BTECH.

9332

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

20577

How regulator control the fan speed?

21926

i need bhel question papers.

Bhel,

10069

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

11584

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

12533

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

13954

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

11187

how to select cable size?

20576

what is the different betweem earthing and neutral?

9589

what is the term of desruptive voltage

8296

can induction motor run over the rated speed ?

ACC,

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.

6127

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