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Rectifiers and Converters

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

100 V
10 V
20 V
30 V

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Rectifiers and Converters
In a mercury arc rectifier, the anode is usually made of

aluminium
copper
graphite
silver

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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.

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

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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
Selenium rectifier can be operated at temperatures as high as

25°C
60°C
75°C
40°C

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Rectifiers and Converters
In a mercury arc rectifier positive ions are attracted towards

anode
shell bottom
mercury pool
cathode

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