1. A motor should be stopped by dynamic braking alone.
a. True
b. False
2. Dynamic braking is a complex but safe method of emergency or safety braking.
a. True
b. False
3. Dynamic braking is applied in about one-fifth the time required to set the majority of shunt brakes.
a. True
b. False
4. There are many different methods of providing dynamic braking for small production equipment.
a. True
b. False
5. Dynamic braking for an AC squirrel cage motor can be accomplished by connecting direct current to the stator
winding.
a. True
b. False
Name: Class: Date:
Unit 50 Dynamic and Regenerative Braking
6. Stopping a motor by reconnecting it so that it acts as a generator is a method of braking called ____ braking.
a. smooth b. phase
c. regenerative d. dynamic
7. Connecting the armature to a resistance and to the line as well is a process called ____ braking.
a. dynamic b. smooth
c. regenerative d. phase
8. On high-speed drives, it is recommended that ____ braking be provided to reduce the drive speed to a low value
before the brakes are set.
a. smooth b. dynamic
c. regenerative d. phase
9. Dynamic braking can be started by track-type ____ switches installed in the end zones of overhead traveling cranes.
a. limit b. toggle
c. pneumatic d. pressure
10. A synchronous motor can be reconnected as a(n) ____ to provide faster stopping.
a. alternator b. DC generator
c. regulator d. accelerator
Name: Class: Date:
Unit 50 Dynamic and Regenerative Braking