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Rectifiers and Converters

Rectifiers and Converters
A mercury arc rectifier possesses ________ regulation characteristics

exponential
none of the listed here
curved line
straight line

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Rectifiers and Converters
A rotary converter combines the function of

a synchronous motor and a D.C. generator
Both of the listed here
an induction motor and a D.C. generator
None of the listed here

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

55°C
45°C
75°C
30°C

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

graphite
copper
silver
aluminium

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

Four
Six
Three
Two

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

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

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