Motors and Generators Review

Front

What is the flow of an electric charge through a conductive medium?

Back

current

Front

What is the stationary part of a rotor system called?

Back

stator

Front

What is the name of the rotary electrical switch in a motor? It applies power to the best location on the rotor.

Back

commutator

Front

What is the rate at which work is done? It is also a measure of motor performance.

Back

horsepower

Front

What is the opposition to the passage of electric current through an element?

Back

resistance

Front

How does the strength of an electromagnet change by an increase in the electricity traveling through the wire?

Back

It increases.

Front

Back

V = IR
V = voltage
I = current
R = resistance

Front

If resistance stays the same, what can we do to increase the voltage?

Back

Increase current

Front

How do we control the speed of a DC motor?

Back

By changing the amount of DC voltage.

Front

What is the relationship between DC motor speed and DC motor current?

Back

They are directly related.