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DC Generators

DC Generators
The critical resistance of the D.C. generator is the resistance of

Brushes
Field
Armature
Load

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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
None of the listed here
Numbers of conductors

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DC Generators
In a four-pole D.C. machine

All the four poles are south poles
Alternate poles are north and south
All the four poles are north poles
Two north poles follow two south poles

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DC Generators
The size of a dc generator can be reduced by using ______

Magnetic material of high permeability
High resistance winding material
Lap winding
Iron commutator

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DC Generators
A shunt generator gives its greatest voltage at

Full load
Half full load
None of the listed here
No load

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

Silicon steel
Nonferrous material
Copper
Cast-iron

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