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DC Generators

DC Generators
Small dc machines generally have _____ poles.

6
4
2
8

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DC Generators
Wave wound generators provide

None of the listed here
More current but less voltage
More current and more voltage
Less current but more voltage

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DC Generators
The purpose of providing dummy coils in a generator is

To provide mechanical balance for the rotor
To amplify voltage
To reduce eddy current losses
To enhance flux density

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

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

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

0.05 mm
0.5 m
0.005 mm
5 m

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

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

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