1. With primary resistor-type starters, a resistor is connected in parallel in the lines to the motor.
a. True
b. False
2. Primary resistor starters provide closed transition starting.
a. True
b. False
3. AC primary resistor starters are available only with multi-points of acceleration.
a. True
b. False
4. A primary resistance-type starter has a low initial cost.
a. True
b. False
5. A primary resistance-type starter has a high power factor.
a. True
b. False
Name: Class: Date:
Unit 26 Primary Resistor-Type Starters
6. Primary resistor starters are used to start squirrel cage motors in situations where limited torque is required ____.
a. to save in operation costs
b. for a fast response
c. for short periods of operation
d. to prevent damage to driven machinery
7. Primary resistor starters are used with limited current inrush ____.
a. to save in operation costs
b. for a fast response
c. to prevent excessive power line disturbances
d. for short periods of operation
8. When full-voltage starting may cause serious line disturbances, reduced voltage starters may be recommended for
motors with ratings as small as ____ horsepower.
a. 5 b. 8
c. 10 d. 12
9. With primary resistor starters, the motor starts at a ____ power factor than with other starting methods.
a. much lower b. slightly lower
c. slightly higher d. much higher
10. Some starters have ____ compression disk resistors and are used for starting polyphase squirrel cage motors.
a. graphite b. steel
c. platinum d. stainless steel
Name: Class: Date:
Unit 26 Primary Resistor-Type Starters