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RECTIFIERS AND CONVERTERS

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

Illumination
Traction
Variable speed operation
Electrolysis

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Rectifiers and Converters
The ionization potential of mercury is approximately

10.4 V
5.4 V
16.4 V
None of the listed here

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Rectifiers and Converters
A mercury arc rectifier possesses ________ regulation characteristics

straight line
none of the listed here
curved line
exponential

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

Relay
All of the listed here
Telephones
Time switches

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

all of the listed here
leakage reactance
capacitance
resistance

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