why we use circuit breakers for switching instead of normal switching device?

0 Answers  

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what is phase to phase voltage? what is line to line voltage

46 Answers   Exmar, HBL Power Systems,

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What is the function of auadag in a cro?

0 Answers  

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What kinds of decision are made about CT from it's Knee point(voltage & current)?

2 Answers  

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How a synchronous generator practically work? what is the function of avr(automatic voltage regulator)in synchronous generator?how the connection of avr to the generator made practically?please give me the answer.

6 Answers   Accenture, Heineken,

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why any centrifugal blower draw more current in starting. consider id fan and fd fan?

0 Answers  

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whether energy meter is connected in series or parallel.why?

2 Answers   Encom,

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the input mechanical power of a single alternator is increased,its RPM increased but in case of an alternator synchronised with grid its RPM does not increased with increase of input mechanical power. why?

3 Answers   Bhel,

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what is the method to calculate the voltage drop for number of meters Example 250volts I/p at one end if the cable length is 50 meters what could be the drop?, after 100 meters how much? needs formulae.

1 Answers  

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Can VFD step up to 60 Hz if it is designed to receive 50 Hz input?

3 Answers  

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how can we find a burden of potential transformer? what does it effects? how can we calculate rated load of it?

4 Answers   Areva, KPTCL,

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why the rating of transformer in only KVA not in others?

7 Answers  

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