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DC Generators

DC Generators
A shunt generator gives its greatest voltage at

None of the listed here
No load
Full load
Half full load

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DC Generators
The e.m.f. induced in the armature of a shunt generator is 600 V. The armature resistance is 0.1 ohm. If the armature current is 200 A, the terminal voltage will be

580 V
600 V
640 V
620 V

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DC Generators
A separately excited generator as compared to a self-excited generator

Has exciting current independent of load current
Is more stable
Is amenable to better voltage control
Has all above features

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DC Generators
Magnetic field in a D.C. generator is produced by

Electromagnets
Permanent magnets
Both (A) and (B)
None of these

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DC Generators
The coupling field between electrical and mechanical systems of a dc machine is ______

Magnetic field
Both electrical and magnetic fields
Electric field
None of the listed here

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DC Generators
The commutator of a dc generator acts as

None of the listed here
A load
An amplifier
A rectifier

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