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Rectifiers and Converters

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

Aluminium
Load
Zinc
Copper

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Rectifiers and Converters
A rotary converter combines the function of

an induction motor and a D.C. generator
Both of the listed here
a synchronous motor and a D.C. generator
None of the listed here

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Rectifiers and Converters
The potential drop in the arc, in a mercury arc rectifier, varies

0.05 V to 0.2 V per cm length of the arc
0.5 V to 1.5 V per cm length of the arc
2 V to 3.5 V per cm length of the arc
none of the listed here

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Rectifiers and Converters
When a rectifier is loaded which of the following voltage drops take place ?

Arc voltage drop
All of the listed here
Voltage drop in resistance of transformer and smoothing chokes
Voltage drop in transformer reactance

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Rectifiers and Converters
A rotary converter is a single machine with

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

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Rectifiers and Converters
In a single phase rotary converter the number of slip rings will be

Six
Three
Two
Four

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