Which of the following AC. motors is usually used in large motor-generator sets?

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In a mercury arc rectifier, the anode is usually made of_____________?

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It is the_________of the transformer on which the magnitude of angle of overlap depends?

A. resistance B. capacitance C. leakage reactance D. any of the above...

On which of the following factors the number of phases for which a rectifier should be designed depend ?

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Glass rectifiers are usually made into units capable of D.C. output (maximum continuous rating) of _____________?

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Which of the following is reversible in action ?

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