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Rectifiers and Converters

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

55°C
30°C
75°C
45°C

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Rectifiers and Converters
In a rotary converter I2R losses as compared to a D.C. generator of the same size will be

More
None of the listed here
Remain same
Less

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Rectifiers and Converters
A synchronous converter can be started

from D.C. side as D.C. motor
from A.C. side as induction motor
by means of a small auxiliary motor
All of the listed here

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Rectifiers and Converters
In mercury arc rectifiers having grid, the arc can be struck between anode and cathode only when the grid attains a certain potential, this potential being known as

maximum grid voltage
critical grid voltage
all of the listed here
non of the listed here

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

All of the listed here
electrons
ions and electrons
ions

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Rectifiers and Converters
The metal rectifiers, as compared to mercury arc rectifiers

can operate on high voltages
give poor regulation
can operate on heavy loads
operate on low temperatures

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