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DC Generators

DC Generators
The commutator of a dc generator acts as

A rectifier
None of the listed here
An amplifier
A load

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DC Generators
The number of parallel paths in a simplex lap winding is equal to

Number of poles
None of the listed here
Number of pairs of poles
2

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DC Generators
If residual magnetism is present in a D.C. generator, the induced e.m.f. at zero speed will be

Zero
The same as rated voltage
High
Small

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DC Generators
Magnetic field in a D.C. generator is produced by

Permanent magnets
None of these
Both (A) and (B)
Electromagnets

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DC Generators
In a commutator

Copper is harder than mica
Mica and copper are equally hard
Mica is harder than copper
None of the listed here

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DC Generators
In a dc machine, the number of commutator segment is equal to

Number of coils
Twice the number of poles
Numbers of conductors
None of the listed here

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