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Exam 25: Basic Electricity, Electric Current and Electric Motors

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Question 1

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Which of the following is used to measure the amount of current passing through a wire?

A) voltmeter
B) ammeter
C) ohmmeter
D) circuit breaker

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B

Question 2

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If extra electrons are added to an atom, the body is ____________________ charged.

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Question 3

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In an electric motor, which of the following is a device that aids the starting effort?

In an electric motor, which of the following is the part that turns but does not contain windings?

In an electric motor, which of the following is the rotating part that contains the power windings and commutator?

In an electric motor, which of the following is the stationary part of the motor?

When one material has more electrons than another, the potential difference between the two materials is known as which of the following?

Which type of motor is contained within a gas-tight vessel?

____________________ is an indication of turning effort and is measured in pounds-feet.

Which type of motor has end bells that are open to allow free circulation of ventilation air?

Within an atom, which of the following is a negatively charged particle that rotates around the nucleus?

____________________ is the rate of flow of electrons, measured in amperes.

Which type of motor has ventilation openings arranged so that water falling on them will not be drawn into the cooling air passages?

____________________ are the smallest particles that material can be reduced to and still remain the same material.

____________________ is the rate of doing work or using energy.

If electrons are removed from atoms, the body is ____________________ charged.

Within an atom, which of the following is the centermost structure?

Within an atom, which of the following is a positively charged particle within the nucleus?

____________________ electricity occurs when there is a buildup of charges, but the electrons are not flowing.