Through brushes riding on the three slip rings on the rotor shaft, the magnitude of the rotor current in a wound-rotor induction motor can be controlled by a 3-phase or “3-leg” wye-connected resistive load bank.
Controlling the magnitude of the rotor current with the amount of resistance in series with the respective single-phase rotor windings allows some ___________ ___________ of the wound-rotor motor, although it is normally used to lower the impact of the ___________ ___________ of the induction motor — the individual resistors in the load bank are ___________ ___________ in three or four successive steps until all the resistance is removed from the rotor circuit.
A) bypassed or shorted; speed control; starting torque
B) speed control; bypassed or shorted; starting torque
C) speed control; starting torque; bypassed or shorted
D) starting torque; speed control; bypassed or shorted
Show Answer
Answer:C
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