ALTERNATORS QUIZ

High speed alternators are driven by _____.

Steam turbines

Diesel engines

Hydraulic turbines

None of the listed here

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YOUR ANSWER : ?

In an alternator, armature reaction is considered equivalent to

Fictitious reactance

Fictitious impedance

Fictitious resistance

Fictitious conductance

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following prime movers is the least efficient?

Diesel engine

Steam turbine

Gas turbine

Steam engine

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YOUR ANSWER : ?

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

1

0.866

0.5

None of the listed here

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YOUR ANSWER : ?

Majority of the alternators in the use have _____

Revolving field type construction

Revolving ac armature winding

Stationary field type construction

None of the listed here

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YOUR ANSWER : ?

Turbo alternator are generally used to run at

5000 rpm

3000 rpm

1500 rpm

15000 rpm

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YOUR ANSWER : ?

The power factor of an alternator is determined by its

Speed

Load

Excitation

Primemover

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YOUR ANSWER : ?

The frequency of the system with which several alternators are paralleled can be increased of by simultaneously _______ of all generators.

Increasing the field excitation

Decreasing the field excitation

Increasing the speed of prime movers

Decreasing the speed of prime movers

TRUE ANSWER : ?
YOUR ANSWER : ?

The ac armature winding of an alternator is _______

Always star connected

Star-delta connected

Generally delta connected

None of the listed here

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YOUR ANSWER : ?

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

118 rad/s

157 rad/s

192 rad/s

212 rad/s

TRUE ANSWER : ?
YOUR ANSWER : ?

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