If the rotor of an electrical induction motor is not turning (during start-up or under locked-rotor conditions), the motor’s stator and rotor circuits now function as a transformer:
The rotor circuit frequency is equal to the AC supply frequency in the stator circuit.
The interaction of the primary and secondary electromagnetic fields is at its maximum, which causes the induced secondary voltage to be at its __________.
__________ voltage equates to maximum current in the shorted secondary rotor circuit.
The impedance reflected into the primary is __________, which causes maximum current flow in the primary or stator circuit.
The stator and rotor circuits are generating large amounts of heat within the electric motor.
A) maximum; Maximum; maximum
B) maximum; Minimal; maximum
C) maximum; Maximum; minimal
D) minimal; Maximum; maximum
Show Answer
Answer:C
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