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RECTIFIERS AND CONVERTERS

Rectifiers and Converters
In which of the following applications, direct current is absolutely essential ?

Traction
Variable speed operation
Illumination
Electrolysis

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Rectifiers and Converters
The ionization potential of mercury is approximately

None of the listed here
10.4 V
16.4 V
5.4 V

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Rectifiers and Converters
A mercury arc rectifier possesses ________ regulation characteristics

curved line
none of the listed here
straight line
exponential

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

Relay
Time switches
All of the listed here
Telephones

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

leakage reactance
resistance
all of the listed here
capacitance

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