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Alternators

Alternators
In huge alternators, the moving part is

None of the listed here
Brushes
Poles
Armature

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Alternators
In case of turbo-alternators the rotor is usually made of

Forged steel
Laminated stainless steel
Manganese steel
Cast iron

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

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

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

500 MW
110 MW
250MW
210 MW

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Alternators
Three phase alternators are invariably star commected because

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

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Alternators
The disadvantaged of a short pitched coil is that _______

Harmonics are introduced
Voltage round the coil is reduced
Waveform becomes non-sinusoidal
None of the listed here

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