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Alternators

Alternators
In an alternator, for a coil having a span of 2/3 of pole pitch, the coil span factor will be

0.6
0.866
0.707
0.2

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Alternators
Alternators are usually design to generate

Definite power factor
Definite currents
Definite frequencies
Variable frequncies

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Alternators
A two pole alternator is running at 1500 rpm. Its angular velocity is ______

192 rad/s
212 rad/s
157 rad/s
118 rad/s

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Alternators
The voltage regulation of an alternator depends on

Load current only
None of the listed here
Both load current and pf
Power factor only

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Alternators
Voltage drop in an alternator when under load is due to ______

Armatute reaction
Armature reactance
All of the listed here
Armature resistance

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Alternators
Majority of the alternators are

Three phase
Single phase
Two phase
None of the listed here

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