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A thyristor is triggered by a pulse train of 5 kHz. The duty ratio is 0.4. If the allowable average power is 100 W,

Buchholz relay is used as a safety device with respect to which of the following?

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Buchholz relay is used as a safety device with respect to which of the following?

A) Audio transformers B) Oil filled power transformers

C) Air core transformer D) None of these

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Buchholz relay is used as a safety device with respect to which of the following?

A) Audio transformers B) Oil filled power transformers

C) Air core transformer D) None of these

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