The purpose of using short-circuit gear is___________?
Correct answer: A. to short circuit the rotor at slip rings
- A. to short circuit the rotor at slip rings
- B. to short circuit the starting resistances in the starter
- C. to short circuit the stator phase of motor to form star
- D. none of the above
Explanation
After the motor accelerates, the starting resistance of a slip-ring motor is removed by short-circuiting the rotor slip rings. This makes the rotor operate like a cage rotor during normal running.
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