What is the basic principle of circuit breaker?.. I read that it works on electro-mechanical principle... Does it require both electric n magnetic conversion to act?

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what is the highest voltage for transmitting electrical power in india

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Advantages/Disadvantages of earthing of neutral bus on MSB instead of separate neutral earthing for transformer/DG sets feeding to MSB

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why electron produce magnetic field when it is in motion?

0 Answers   Power Grid,

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Please define ampere?

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1)which height building required lightning arrester? 2)how to calculate the requirement of lightning arrester? 3)what is the pro instrument? 5)how to test protective relay like overload?earth fault relay?

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How much current flow in no load condition of a motor?

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why air handling unit interloking in case of fire

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What is the formula of frequency ?

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what will be the neutral to earth voltage while checking by the Digital multimete? and why?

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How many loops can be provided in a circuit as per IS rules.?

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my 10 hp submersible pump is tripping when connected through ELCB.I have checked the megger value of the coil's with body.It was found to be 0.2mega ohm.that is leakage is there.But when connected to mccb it is not tripping.no leakage current in the motor.Is it safe to connect to mccb? what are the problem's will arise if future?also tell me in ELCB no neutral is connected to motor.than how ELCB was working?

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