Answer / ranjan kumar sahoo

N= Square root{R2+Y2+B2-(RY+YB+BR)}

Answer / hassan

plx explain briefly what is R2 Y2 B2 and RY YB BR
that would be highly appreciated Sir!

what the purpose of transmited high voltage in over head lines

3 Answers   NCC,

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can we use IGBT as a AC-DC converting device in the applications?

2 Answers  

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What is the need of earthing transformer for delta side of a transformer. (Think of a line section between a star/delta transformer at a grid substation and delta/star transformer at a village. An earthing transformer is there at the delta side of the star/delta transformer at grid substation). As there are no ground reference there will not be fault current if a one phase is grounded. Further L-L phase will be sensed by the primary side of star/delta transformer as a L-G fault. So why an earthing transformer is required at delta side

0 Answers   CEB,

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we have one ups its neutral is not earthed.its one distribution MCB has a earth fault.but we can not put off any MCB.so how to find out that in which circuit is earthed without isolating the breaker.

3 Answers   CFCL,

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why capacitor is not discharged phase to body

1 Answers  

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What is line resistance of cable & how it can be measured ?

0 Answers  

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why -48 volts dc used in telecommucation

0 Answers  

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why the neutral line is not giving shock to us if we touch it ?

0 Answers   GPREC,

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What type interview questions ask in Electrical technicians

0 Answers  

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In electrostatic precipitator why positive terminal of tranformer rectifier unit is grounded?

2 Answers  

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what are carbondioxide and dcp used in fire extinguishers

0 Answers  

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why the conservater tank alwes made upper side of transformer???

3 Answers  

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