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In a 3-phase induction motor, the regenerative braking occur when | |
A. | the load is lowered by a hoisting machine. [Correct Answer] |
B. | the load is raised by a hoisting machine. [Wrong Answer] |
C. | the number of poles is reduced in a pole-changing motor. [Wrong Answer] |
D. | the motor speed falls due to overload. [Wrong Answer] |