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Bhel Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What happens if 25 Hz frequency is applied for 400/200,50 Hz single phase Transformer.Will Voltage increase ?

2 7028

What is the difference in Line PT & Bus PT.

3 8474


3 5018

What motor is used in ceiling fans and what motor is used in table fan.? why table fan is costlier than ceiling fan?

6 18573

For two systems transmitting the same amount of real power, the system with the lower power factor will have higher circulating currents due to energy that returns to the source from energy storage in the load.???


Why does capacitor block dc supply?

5 4756

is electrons really flow or they just vibrate at their position?

5 5191

what is the problem in manufacturing transformer with 0 degree phase displacement.???why alwasys go for DYn11 or DY5?Whys not DY0 i.e zero degree displacement between primary and secondary side vectors?

3 4043

Can we Co-ordinate relay in Load Break switch?


how to calculate Amp, 2 different Amp of batteries? Example: No. of Batteries = 2 Battery voltage = 12V 1st Battery rating = 17AH 2nd battery rating = 30AH between parallel connection then output volt 12v Amp?

2 2854


2 2281

what is the difference between earthing and grounding?

6 5458

1ampear me kitna watts hota hai aur elcb ka pura naam kya hai

16 138575

what happens if earth of 33kv cable is not connected to earthing pits? please send this query's answer to


what is defference by mcb,mccb and mpcb

4 3016

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Un-Answered Questions

i need to now what will be the cable size to the following load, transformer to distribution panel distance 110m, load 1000kw, voltage 400v, pf 0.85, permissible voltage drop 2.0%, overhead line, atmospheric temperature 35 degree c.


3-4 questions on optical fiber : data based.


I have doubt that the supply HZ (very low or high than rated ) may affect the power factor. is it true. ?


To make a basic instrumentation amplifier, it takes A One op-amp with a certain feedback arrangement B Two op-amp and seven resistors C Three op-amps and seven capacitors D Three op-amps and seven resistors


How does your previous experience relate to the job you are applying for ?


4. accounting entry at PO level with tax


Which environment variables are absolutely critical in order to run the OUI?


What Should be the value of Vector Surge angle at Tripping and how to calculate it?


63MVA,220KV/6.9KV Transformer LV side neutral is connected to Earth pit through NGR. Whether this earth pit required to connect with near by below grouding earth mat or it is to be kept separate?


what is the need of constractor explain with sutable progarmming example


What is difference between Sql server and MySql database? It may be silly question but i really dont know.


i have a job with 3 possibiliies finish with ststus ok abbort warning how do you handle these 3 in job sequence? explain the situation where you have appiled scd in your project? chandu


Why cd or dvd are round why not square.


send me model hpcl questions mail id


I need model question papers for RRB section engineer Chennai... Please send to my E-mail Id:-


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