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DC Generators

DC Generators
The armature core of a D.C. generator is usually made of

Nonferrous material
Copper
Cast-iron
Silicon steel

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DC Generators
The real working part of a dc machine is the ______

Commutator
None of the listed here
Armature winding
Field winding

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DC Generators
The number of brushes in a commutator depends on

Type of winding
Amount of current to be collected
Voltage
Speed of armature

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DC Generators
The brush voltage drop in dc machine is about _______

20 V
10 V
0.1 V
2 V

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DC Generators
In a lap winding, the number of the brushes required is equal to

None of the listed here
Number of pairs of poles
Commutator pitch
Number of poles

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DC Generators
The yoke of a dc machine carries ______ pole flux.

Two times the
One-half of
Three times
None of the listed here

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