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Alternators

Alternators
Which harmonic will be totally eliminate in an alternator by using a fractional pitch of 4/5 ?

Fifth
Ninth
Third
Seventh

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Alternators
In an alternator one of the advantages of distribution the winding is to

Reduce noise
Save on copper
Improve voltage wavefrom
None of the listed here

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Alternators
In an alternator, armature reaction is considered equivalent to

Fictitious conductance
Fictitious resistance
Fictitious impedance
Fictitious reactance

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Alternators
Low speed alternators are driven by ______

Steam turbines
None of the listed here
Steam engine
Hydraulic turbines

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Alternators
Alternators, now a days, are designed to have poor regulation because

We employ automatic voltage regulators
It limits the value of short circuit current
None of the listed here
It reduces the construction cost

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Alternators
Turbo alternators are generally used to run at

1500 rpm
3000 rpm
5000 rpm
1500 rpm

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