1. An ideal solid-state adjustable speed controller is a modern, energy-saving method of controlling motor speed.
a. True
b. False
2. Electronic circuitry is arranged on plug-in circuit cards.
a. True
b. False
3. Electronic cards are coated to protect against damage due to a hot environment.
a. True
b. False
4. All controller startup adjustments are located on a startup adjust card.
a. True
b. False
5. Starting resistors are required for reduced speed range systems only.
a. True
b. False
Name: Class: Date:
Unit 38 Solid-State Adjustable Speed Controller for AC Wound Rotor Motors
6. Speed control is accomplished by controlling motor rotor current, thereby controlling ____.
a. motors located remotely b. theSCR´soutputvoltage
c. the motor torque d. the operation of relays
7. Escalating energy costs have made efficiency an important consideration in determining which adjustable ____ is
best suited for a specific application.
a. accelerating relay b. voltage control
c. current sensor d. speed controller
8. Circuit cards may also be called ____.
a. modules b. packets
c. kits d. units
9. Card-edge connectors are generally ____ coated to ensure reliable contact between the card and the rack terminals.
a. silver b. gold
c. copper d. zinc
10. Power factor correction is recommended for ____ slip power recovery systems.
a. very few b. some
c. most d. all
Name: Class: Date:
Unit 38 Solid-State Adjustable Speed Controller for AC Wound Rotor Motors