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Rectifiers and Converters

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

resistance
capacitance
all of the listed here
leakage reactance

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Rectifiers and Converters
Normally, which of the following is used, when a large-scale conversion from AC. to D.C. power is required?

Mercury arc rectifier
Motor converter
Rotary converter
Motor-generator set

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Rectifiers and Converters
The ionization potential of mercury is approximately

16.4 V
None of the listed here
5.4 V
10.4 V

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

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

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Rectifiers and Converters
In a three-phase mercury arc rectifiers each anode conducts for

One-half a cycle
One-fourth of a cycle
One-third of a cycle
Two-third of a cycle

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Rectifiers and Converters
Which of the following metals is generally manufactured by electrolysis process?

Copper
Zinc
Load
Aluminium

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