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1. |
When the rotor speed, in a synchronous machine, becomes more than the synchronous speed during hunting, the damper bars develop_________________? |
A. | inductor motor torque |
B. | induction generator torque |
C. | synchronous motor torque |
D. | d.c. motor toque |
E. | none of the above |
Answer» C. synchronous motor torque | |