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Rectifiers and Converters

Rectifiers and Converters
With a motor converter it is possible to obtain D.C. voltage only upto

600-800 V
1700-2000 V
1000-1200 V
200-100 V

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

aluminium
silver
copper
graphite

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Rectifiers and Converters
The metal rectifiers are preferred to valve rectifiers due to which of the following advantages ?

Both of the listed here
They are mechanically strong
They do not require any voltage for filament heating
None of the listed here

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Rectifiers and Converters
A rotary converter is a single machine with

one armature and two fields
none of the listed here
two armatures and one field
one armature and one field

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Rectifiers and Converters
In a phase-shift control method, the phase shift between anode and grid voltages can be achieved by means of

Shunt motor
Synchronous motor
Synchronous generator
Induction regulator

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Rectifiers and Converters
In which of the following applications, direct current is absolutely essential ?

Variable speed operation
Traction
Electrolysis
Illumination

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MORE MCQ ON Rectifiers and Converters

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