1. Thephrase“woundrotor”describestheconstructionoftherotor.
a. True
b. False
2. The induced current remains constant in the wound rotor motor.
a. True
b. False
3. There are two types of manual controllers, starters and regulators.
a. True
b. False
4. A normally closed micro-limit switch is used to sense when the manual controller is in a position such that all
resistance is connected in the rotor circuit.
a. True
b. False
5. Drum controllers may be used in place of faceplate starters.
a. True
b. False
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Name: Class: Date:
Unit 34 Wound Rotor Motors and Manual Speed Control
6. When the rotor is installed in a motor, three leads are brought out from the rotor winding to solid conducting ____.
a. collector rings b. end rings
c. slip rings d. bearings
7. The stator windings for the three major types of three-phase motors – squirrel cage, wound rotor, and ____ – are
basically the same.
a. synchronous b. stator
c. bearing end brackets d. reversible
8. Sliding contact wound rotor starters and regulators control only the ____ circuit of the motor.
a. basic b. secondary
c. primary d. interlocking
9. When starting wound rotor motors, the operating lever is moved to ____ to insert the full value of resistance in the
secondary circuit.
a. the first running position b. the middle running position
c. the last running position d. the regular running position
10. The drum controller of a motor is separate from the resistors and is used for ____.
a. providing low-voltage protection b. providing low-voltage release
c. controlling the primary magnetic switch d. switching or controlling external resistors
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Unit 34 Wound Rotor Motors and Manual Speed Control