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Rectifiers and Converters

Rectifiers and Converters
Which of the following metals is generally manufactured by electrolysis process?

Copper
Load
Aluminium
Zinc

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

resistance
leakage reactance
capacitance
all of the listed here

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

100 V
20 V
30 V
10 V

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Rectifiers and Converters
Which of the following rectifiers are primarily used for charging of low voltage batteries from AC. supply?

Mechanical rectifiers
Electrolytic rectifiers
Selenium rectifiers
Copper oxide rectifiers

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Rectifiers and Converters
The advantage of mercury arc rectifier is that

it is light in weight and occupies small floor space
it has high efficiency
All of the listed here
it is comparatively noiseless

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Rectifiers and Converters
In a phase-shift control method, the phase shift between anode and grid voltages can be achieved by means of

Synchronous motor
Induction regulator
Shunt motor
Synchronous generator

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