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Exam 2: Types of Electric Motors

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Question 1

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Motors are selected mainly because of the starting torque required for the motor to perform its function.

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B) False

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Question 2

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The electromagnet is a magnet produced through ____________________.

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Question 3

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What are five types of motors used in environmental systems today?

An alternating current of 60Hz changes direction 100 times per second.

The magnetic lines are referred to as _________________________.

Magnetism can only be produced by the earth core.

What are the advantages of using a ECM over a PSC?

Identify each variable in the speed formula listed below. S = (F ´ 120)/NP

The magnetic lines of force of a magnet that flow between the ____________________ and ____________________ poles.

What are shaded pole motors used for?

ECM is a ____________________ part motor.

All magnets have two poles.

To make an electric motor rotation continuous the magnet field must rotate.

Motor speed is generally used to classify motors into different types.

Two types magnets are in use today: the _________________________ and the _________________________.

____________________ is a brushless DC, three-phase motor with a permanent magnet rotor.

Resistance-Start-Induction-Run motor has only a starting winding and running.

What is magnetism?

What are the two general classifications of split-phase motors used in the HVAC industry?

All magnets have two poles, a ____________________ and a ____________________ pole.