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Alternators

Alternators
In aircrafts, alternators have operating frequency of

400 Hz
800 Hz
60 Hz
50 Hz

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Alternators
Voltage regulation of an alternator is larger than that of a dc generator because of _______

None of the listed here
Large leakage reactance
Large armature resistance
Complex effects of armature reaction

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

Armatute reaction
Armature resistance
All of the listed here
Armature reactance

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Alternators
Where the terminal voltage of an alternator falls on throwing of the load, it indicates that the load is purely

Resistive
Inductive
Capacitive
None of the listed here

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Alternators
What is the largest size of a alternator being manufactured in india?

500 MW
110 MW
210 MW
250MW

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Alternators
In an alternator the armature reaction is mainly influenced by

Speed of the alternator
Total current drawn
Short circuit ratio
The power factor of the load

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