EXAMIANS
In phase-shift control method the control is carried out by varying the of grid voltage.
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In a phase-shift control method, the phase shift between anode and grid voltages can be achieved by means of
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The advantage of mercury arc rectifier is that
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It is the_______of the transformer on which the magnitude of angle of overlap depends.
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On which of the following factors the number of phases for which a rectifier should be designed depends?
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Normally, which of the following is used, when a large-scale conversion from AC. to D.C. power is required?
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Which of the following mercury arc rectifier will deliver least undulating current?
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Glass rectifiers are usually made into units capable of D.C. output (maximum continuous rating) of
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To produce cathode spot in a mercury arc rectifier
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A commutating rectifier consists of commutator driven by
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