Answer Posted / nikhil sharma

oil filled circuit breakers use resistor switching to
balance the voltage distribution amongst the contacts of
circuit breaker and to reduce the transient overvoltages
produced during arc inhibition process...

How 48-relay (incomplete sequence) functions?

4034

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we use 400/5A ct and 35/roor3KV,/0.1/root3KV,0.1/root3KV pt ratio. What is the multiple factor of this meter.

1962

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can some one clearly explain why -48 volt DC use in telecom site????

1634

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what is mean by drives?

1957

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which are the criterias needed to select the kind of neutral earthing(solid earthing,resistance earthing,etc.) at various voltage levels in electrical distribution?

1936

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Did RMU have ct and pt ?

1315

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How does "OUT OF STEP" relay ,for Synchronous motor protection, work?

4284

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what is the IEC standard for Power Cable installation in onshore (like in direct buried ground or above groung)

2651

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if a 3phase 100kva distribution transformer , 400 v,50 hz, 4-wire system is loaded at 160 k.w mostly 1-phase Lighting & Airconditioning split a.c load what will be the net effect on the power system in terms of voltage, powerfactor, current , efficiency of xformer

1846

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Whether 3 phase induction motorwith 100 hp capacity , Amp 160 for which sensitive earth fault relay , type CTUM 15 can be used?

1420

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Why LED light has advantage of rapid reflection ,although other lights alse reflect.? and this light is considered to be best for transmission usage in case of Free optics

1998

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What is electrical cable termination

2577

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there is an alternator 480 k.w, 400v,50hz, 4-wire running on load having leakage alternator body earthed current 38 A. is it within acceptable limit? if yes then give reference if no then how to bring within specified limit

1873

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Can Anyone suggest the Standards (IEC or IS) for selecting copper current density?

1351

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Draw the equivalent circuit of crystal oscillator?

1268

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