Homework Assignment GB9-12
OEET 120

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  1. Draw quick-and-dirty schematics for the following:
    • Shunt DC motor
    • Series DC motor
    • Compound DC motor
    • Shunt DC generator
    • Series DC generator
    • Compound DC generator
  2. What's the purpose of the series winding in a compound DC motor?
  3. What's the purpose of the series winding in a compound DC generator?
  4. If you increase the field current in a shunt DC motor, does the motor speed up or slow down?
  5. Which has the higher starting torque, a shunt DC motor or a series DC motor?
  6. If you remove the mechanical load from a shunt DC motor, what happens to the speed? A. It increases slightly. B. It increases to the point where the motor may be damaged.
  7. If you remove the mechanical load from a series DC motor, what happens to the speed? A. It increases slightly. B. It increases to the point where the motor may be damaged.
 
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