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Exam 3: Self-Excited Shunt Generator

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Question 1

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Voltage ____________________ refers to automatic changes in the terminal voltage due to reactions within the generator as the load current changes.

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regulation

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Why are voltage regulators used in aircraft and automobiles?

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Generators used in aircraft an...

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Question 3

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The terms voltage regulation and voltage control have the same meaning.

There is only one method that can be used to renew the residual magnetism.

The motorizing test can be used for restoring residual flux if the generator armature is mechanically engaged to the prime mover and cannot rotate freely.

Contact resistance at the brushes is another reason for the failure of the generator to develop its ____________________.

To maintain the original ____________________ when renewing the residual magnetism, the electrical polarities of the output leads and the exciting battery mush be matched.

Explain how to check for proper contact pressure using a simple resistance test.

____________________ are used to control the voltage output of shunt generators.

Briefly describe what happens to the voltage of a self-excited shunt generator after the poles are established.

Any generator has critical field resistance.

Unlike the separately excited generator, there is no current in the field circuit when the ____________________ is motionless.

If the direction of armature rotation is reversed at start-up, the brush polarity is also reversed.

How are field rheostats used in shunt generators?

What formula is used to determine the percent of voltage regulation?