Hybrid Book - Chapter 6 - Quiz & Trivia

1. A PM electric machine contains all of the following except a ___.

Rotor

Stator

Magnet

Commutator

2. Another method to control the regenerative braking power generated by a PM electric machine is to ___.

Increase the rotor speed

Increase the field-weakening current

Increase the lead vector

Eliminate power-inverter signaling

3. A V-shaped magnet arrangement in the rotor decreases the ___.

Maximum rotor speed

Minimum rotor speed

Rotor diameter

Back EMF

4. A PM/BLDC operates with a(n) ___ stator to trigger timing control.

Synchronous

Asynchronous

Six-step

Axial

5. In a PM/BLDC machine, an increase in stator current causes a(n) ___.

Increase in torque

Decrease in torque

Increase in rotor speed

Decrease in rotor speed

6. One method to control the regenerative braking power generated by a PM electric machine is to ___.

Control the lag angle

Control the lead angle

Increase the stator field speed

Decrease the stator field speed

7. Field weakening of a PM electric machine is necessary to overcome the back EMF created by the ___.

Stator magnetic field

Stator speed

Magnets

Flux vector angle

8. The Toyota Prius PM electric machine controls ___ magnets poles on its rotor.

4

8

16

24