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DC Generators

DC Generators
The current in armature conductors of a dc machine is ______

Pulsating dc
Ac
Pure dc
Pure dc plus pulsating dc

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

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

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

Copper
Cast-iron
Nonferrous material
Silicon steel

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DC Generators
The number of armature parallel paths in a two-pole D.C. generator having duplex lap winding is

8
2
6
4

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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
0.005 mm
0.5 m
5 m

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DC Generators
The efficiency of a dc generator is maximum when its variable loss is

Equal to double the constant loss
Equal to half of constant loss
Equal to Constant loss
None of the listed here

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