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Alternators

Alternators
Which of the following prime movers is the least efficient?

Steam engine
Steam turbine
Diesel engine
Gas turbine

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Alternators
A 3 phase alternator has 3-slot per pole. The distribution factor of the winding is _______

0.5
1
0.866
None of the listed here

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Alternators
Three phase alternators are invariably star commected because

Magnetic losses are the minimum
Higher terminal voltage is obtained
Less turns of wire are required
Small conductors can be used

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Alternators
Majority of the alternators are

Three phase
None of the listed here
Single phase
Two phase

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Alternators
Alternators are usually design to generate

Definite power factor
Definite frequencies
Definite currents
Variable frequncies

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Alternators
The stator of an alternator is wound for _______on the rotor.

More number of poles than
The same number of poles as
Less number of poles than
None of the listed here

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