In which of the following equipment direct current is needed?
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Electrical Engineering · all questionsRectifiers And Converters
Rectifiers And Converters
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Mercury, in arc rectifiers, is chosen for cathode because
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It is the_______of the transformer on which the magnitude of angle of overlap 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 is the loss within the mercury arc rectifier chamber?
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The voltage drop at anode, in a mercury arc rectifier is due to
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The efficiency of an electrolytic rectifier is nearly
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A rotary converter is a single machine with
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In a grid control of mercury arc rectifiers when the grid is made positive relative to cathode, then it the electrons on their may to anode.
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Which of the following mercury arc rectifier will deliver least undulating current?
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Which of the following methods may be used to convert A.C. system to D.C.?
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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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On which of the following factors the number of phases for which a rectifier should be designed depends?
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With a motor converter it is possible to obtain D.C. voltage only upto
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A commutating rectifier consists of commutator driven by
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In a mercury pool rectifier, the voltage drop across its electrodes
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When a rectifier is loaded which of the following voltage drops take place ?
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In a mercury arc rectifier, the anode is usually made of
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Which of the following metals is generally manufactured by electrolysis process?
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If cathode and anode connections in a mercury arc rectifier are inter changed
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