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DC Generators

DC Generators
The greatest eddy current loss occurs in the _____ of a dc machine.

Armature
Yoke
Field poles
Commutating poles

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DC Generators
Permeance is the reciprocal of

Flux density
Reluctance
Ampere turns
Resistance

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DC Generators
The commutator of a dc generator acts as

An amplifier
A rectifier
A load
None of the listed here

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DC Generators
Which of the following could be lamina proximately the thickness of laminations of a D.C. machine?

0.5 m
5 m
0.005 mm
0.05 mm

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DC Generators
Which of the following generating machine will offer constant voltage on all loads?

Level compounded generator
Self-excited generator
Separately excited generator
All of these

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DC Generators
In a D.C. machine stray loss is the sum of

Shunt field copper loss and mechanical loss
Total copper loss and mechanical loss
Armature copper loss and iron loss
Iron loss and mechanical loss

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