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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.

leakage reactance
capacitance
resistance
all of the listed here

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

Load
Copper
Aluminium
Zinc

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Rectifiers and Converters
If cathode and anode connections in a mercury arc rectifier are inter changed

Internal losses will be reduced
Both ion and electron streams will move in the same direction
The rectifier will not operate
The rectifier will operate at reduced efficiency

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Rectifiers and Converters
The ionization potential of mercury is approximately

16.4 V
None of the listed here
10.4 V
5.4 V

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Rectifiers and Converters
The metal rectifiers, as compared to mercury arc rectifiers

can operate on high voltages
give poor regulation
can operate on heavy loads
operate on low temperatures

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Rectifiers and Converters
To produce cathode spot in a mercury arc rectifier

an auxiliary electrode is used
tube is evacuated
anode is heated
low mercury vapour pressures are used

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