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Rectifiers and Converters

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

shell bottom
mercury pool
anode
cathode

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

30 V
100 V
20 V
10 V

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Rectifiers and Converters
In a mercury arc rectifier______ flow from anode to cathode

ions and electrons
ions
All of the listed here
electrons

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Rectifiers and Converters
Normally, which of the following is used, when a large-scale conversion from AC. to D.C. power is required?

Mercury arc rectifier
Motor converter
Motor-generator set
Rotary converter

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Rectifiers and Converters
In a glass bulb mercury arc rectifier the maximum current rating is restricted to

1500 A
200 A
500 A
2000 A

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Rectifiers and Converters
Mercury, in arc rectifiers, is chosen for cathode because

Its atomic weight is quite high
Its boiling point and specific heat are low
Its ionization potential is relatively low
All of the listed here

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