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Rectifiers and Converters

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

ions
All of the listed here
electrons
ions and electrons

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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
Which of the following are the applications of D.C. system?

All of the listed here
Battery charging work
Electrolytic and electro-chemical processes
Arc welding

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Rectifiers and Converters
Copper oxide rectifier is usually designed not to operate above

75°C
55°C
30°C
45°C

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Rectifiers and Converters
Which of the following rectifiers have been used extensively in supplying direct current for electroplating?

Mercury arc rectifiers
Copper oxide rectifiers
Selenium rectifiers
Mechanical rectifiers

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Rectifiers and Converters
A rotary converter is a single machine with

one armature and one field
two armatures and one field
one armature and two fields
none of the listed here

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