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Rectifiers and Converters

Rectifiers and Converters
It is the_______of the transformer on which the magnitude of angle of overlap depends.

resistance
leakage reactance
all of the listed here
capacitance

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Rectifiers and Converters
A rotary converter operates at a

high power factor
low power factor
None of the listed here
zero power factor

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Rectifiers and Converters
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.

any of the listed here
none of the listed here
decelerates
accelerates

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Rectifiers and Converters
In which of the following equipment direct current is needed?

Telephones
Relay
All of the listed here
Time switches

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Rectifiers and Converters
The applications of selenium rectifiers are usually limited to potential of

20 V
30 V
10 V
100 V

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Rectifiers and Converters
In selenium rectifiers efficiencies ranging from ______ to ______ percent are attainable

75, 85
40, 50
20, 30
30, 60

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