EGII W2M

Less pulsating force applied to rotating generators and motors is an advantage in what type of system?

pg.34

• Delta

• Single phase

• WYE

• Three phase

At what degree do the coils of a generator need to be spaced at to maintain a constant order of rotation?

pg.35

• 45

• 120

• 90

• 180

The difference between a three phase generator and single phase generator?

pg.35

• No difference

• Size of generator

• Number of coils

• Frequency

A three phase generator will produce a three phase sine wave.

pg.36

• True

• False

How many times per cycle is a single phase sine wave at zero?

pg.37

• 3

• 2

• 4

• 1

What happens when the single phase sine wave is at zero?

pg.37

• Current flows/no voltage

• Voltage flows/no current

• Current and voltage flow

• No current or voltage flow

In a single phase motor when the sine wave is at zero, what does the motor rely on to keep spinning?

pg.37

• The other two phases

• Voltage

• Inertia

• Amps

Three phase power results in much smoother and more efficient operation of equipment

pg.37

• False

• True

Three phase load can be much smaller than a single-phase load while providing the same output.

pg.37

• True

• False

A single phase motor is connected to a single phase AC circuit operating at 60hz. How many times does the motor not receive power?

pg.37

• 60

• Always receives power

• 180

• 120