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DC Generators

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

5 m
0.005 mm
0.5 m
0.05 mm

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DC Generators
Dc machines which are subjected to abrupt changes of load are provided with

Interpole windings
Compensating windings
Equalisers
Copper brushes

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DC Generators
The dc generator that has poorest voltage is

Over compounded generator
Flat compounded generator
Series generator
Shunt generator

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DC Generators
If a self excited D.C. generator after being installed, fails to build up on its first trial run, the first thing to do is to

reverse the field connections
increase the field resistance
increase the speed of primemover
check armature insulation resistance

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DC Generators
A triplex wave winding will have parallel paths.

None of the listed here
4
2
6

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DC Generators
The copper loss is constant for

Shunt generator only
Series generator only
Both shunt and compound generator
None of the listed here

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