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what will happen if u run induction motor beyond its rated speed
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Answer Posted / sumityadav
Induction motor acts as generator when its speed increases than the speed of its stator rotating magnetic field. If a prime mover is connected to the shaft and the stator is connected to ac supply, when it is rotated at a speed greater than the speed of rotating magnetic field, slip becomes negative(-1 < S < 0), torque becomes negative along with the rotor current and power. Therefore motor starts supplying current or power to the supply lines where it is connected.
Credit:https://www.electrical-exam.com/3-phase-induction-motor-mcq/
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