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Rectifiers and Converters

Rectifiers and Converters
Glass rectifiers are usually made into units capable of D.C. output (maximum continuous rating) of

300 A at 300 V
400 A at 400 V
500 A at 500 V
100 A at 100 V

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Rectifiers and Converters
In a phase-shift control method, the phase shift between anode and grid voltages can be achieved by means of

Synchronous motor
Shunt motor
Synchronous generator
Induction regulator

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

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

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Rectifiers and Converters
The ionization potential of mercury is approximately

10.4 V
16.4 V
5.4 V
None of the listed here

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Rectifiers and Converters
In a single phase rotary converter the number of slip rings will be

Three
Four
Two
Six

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Rectifiers and Converters
A rotary converter is a single machine with

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

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