Answer Posted / k.prakashchandra

Tr is an ac machine.If dc is applied ,the current will be
equal to voltage divided by dc resistance as inductance and
back emf are absent.There will not any output in the secondary.

What is the function of attenuator in cro?

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11 kV line deraction check by an Engineer.

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Why we use duplex coil and hook switch in telephone system?

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When we need up only in o/p 440v, so why we use directly in 11kva in input?

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How will polarity test of Dy5 Transformer ?

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Define cut-off rate?

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Motor,transformers,capacitor tubelight etc....

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what is proper capacitor placement? How to evaluate capacitor size?

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iam preparing for rrb section engineer post in electrical branch.suggest the right textbook for my reference.fromwhere i will get the previous q.papers?

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whats the differece between Exd and Exe

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what is solkor relay and which condition it will act?

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what is charger supervision and control supervision?

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