A 3-phase synchronous motor is running clockwise. If the direction of its field current is reversed
Correct answer: B. the motor continue to run in the same direction
- A. the motor will stop
- B. the motor continue to run in the same direction
- C. the winding of the motor will burn
- D. the motor will run in the reverse direction
- E. none of the above
Explanation
Reversing field current reverses rotor magnetic polarity but does not change the stator phase sequence, which determines the rotating-field direction. Therefore, the motor is intended to continue in the same direction, although a transient loss of synchronism may occur in practice.
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