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Rectifiers and Converters

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

Copper
Aluminium
Load
Zinc

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Rectifiers and Converters
In a mercury pool rectifier, the voltage drop across its electrodes

is almost independent of load current
is directly proportional to load
is inversely proportional to load
varies exponentially with the load current

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Rectifiers and Converters
A commutating rectifier consists of commutator driven by

An induction motor
A D.C. shunt motor
A synchronous motor
A D.C. series motor

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Rectifiers and Converters
Which of the following AC. motors is usually used in large motor-generator sets?

Synchronous motor
Slip ring induction motor
Any of the listed here
Squirrel cage induction motor

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

100 V
30 V
20 V
10 V

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Rectifiers and Converters
The voltage drop between the anode and cathode, of a mercury arc rectifier comprises of the following

anode drop, cathode drop and arc drop
anode drop and arc drop
cathode drop and arc drop
anode drop and cathode drop

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