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DC Generators

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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DC Generators
The O. C. C. of a dc generator is also called its_______ characteristic.

External
Performance
Internal
No load saturation

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DC Generators
The greatest percentage of heat loss in a dc machine is due to ______

Frictional loss
Eddy current loss
Copper loss
Hysteresis loss

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

Copper
Nonferrous material
Silicon steel
Cast-iron

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DC Generators
The O. C. C. of a dc generator

Is similar for all types of generators
Is different for different generators
May be same or different
None of the listed here

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DC Generators
The nature of armature winding of a dc machine is decided by

None of the listed here
Commutator pitch
Back pitch
Front pitch

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