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DC Generators

DC Generators
The yoke of a dc machine is made of

Silicon steel
Soft iron
Cast steel
Aluminum

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DC Generators
The commutator segments are connected to the armature conductors by means of

Copper lugs
Resistance wires
Insulation pads
Brazing

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DC Generators
A sinusoidal voltage of 5 Hz is applied to the field of a shunt generator. The armature voltage wave

will be of 5 Hz
will be of 5 xiVHz
will be of v Hz 5
will be zero

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DC Generators
The armature of a dc machine is made of ______

Wrought iron
Cast steel
Silocon steel
Soft iron

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DC Generators
Stray losses consist of

None of the listed here
Magnetic and copper losses
Mechanical and copper losses
Magnetic and mechanical losses

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DC Generators
In a practical dc generator, mechanical efficiency is

None of the listed here
Equal to electrical efficiency
More than electrical efficiency
Less than electrical efficiency

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