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Rectifiers and Converters

Rectifiers and Converters
The internal efficiency of a mercury arc rectifier depends on

current only
voltage only
voltage and current
r.m.s. value of current

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Rectifiers and Converters
The cathdde voltage drop, in a mercury arc rectifier, is due to

expenditure of energy in overcoming the electrostatic field
surface resistance
expenditure of energy in liberating electrons from the mercury
expenditure of energy in ionization

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Rectifiers and Converters
It is the_______of the transformer on which the magnitude of angle of overlap depends.

all of the listed here
resistance
leakage reactance
capacitance

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

20 V
100 V
30 V
10 V

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Rectifiers and Converters
Which of the following mercury arc rectifier will deliver least undulating current?

Six-phase
Two-phase
Three-phase
Single-phase

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

ions
electrons
ions and electrons
All of the listed here

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