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Alternators

Alternators
In aircrafts, alternators have operating frequency of

60 Hz
400 Hz
800 Hz
50 Hz

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Alternators
Alternators are usually design to generate

Definite frequencies
Definite currents
Variable frequncies
Definite power factor

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Alternators
The full load efficiency of an alternator _______with increases in speed.

None of the listed here
Decreases
Remains unchanged
Increases

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Alternators
An alternator supplying power to a load with a leading power factor always has ______ voltage regulation.

Positive
Zero
Negative
Unity

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Alternators
The power factor of an alternator is determined by its

Primemover
Excitation
Speed
Load

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

Armature reactance
All of the listed here
Armatute reaction
Armature resistance

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