1. Large motors should be connected directly across the line on startup.
a. True
b. False
2. In the event of a power failure, a manual starter motor automatically restarts when the power returns.
a. True
b. False
3. Common applications of automatic starters provide control of small machine tools, fans, pumps, oil burners, blowers,
and unit heaters.
a. True
b. False
4. When an overload relay trips, the starter mechanism unlatches, opening the contacts to stop the motor.
a. True
b. False
5. Only one overload relay is required in either the single-pole or double-pole motor starter.
a. True
b. False
Name: Class: Date:
Unit 2 Fractional and Integral Horsepower Manual Motor Starters
6. A motor may draw up to a ____ percent current surge on starting.
a. 100 b. 300
c. 600 d. 900
7. A manual starter is a(n) ____ with motor overload protection.
a. pressure switch b. limit switch
c. on-off switch d. float switch
8. Manual push-button starters may be used to control single-phase motors rated up to ____.
a. 5 hp b. 10 hp
c. 15 hp d. 20 hp
9. Manual push-button starters are designed for infrequent starting of ____.
a. small AC motors b. large DC motors
c. small DC motors d. large AC motors
10. Thermal overload units are widely used on both the fractional and integral horsepower manual starters for protection
of motors from sustained electrical overcurrents that could result from overloading of the driven machine or from
____.
a. excessively low line voltage b. excessively low power load
c. excessively high line voltage d. excessively high power load
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Name: Class: Date:
Unit 2 Fractional and Integral Horsepower Manual Motor Starters