If mechanical load is added to a synchronous motor and the magnetic coupling between the rotor and stator is broken, what would be the result to the motor's operation?

Select the most correct answe r from the selection provided below

Question

If mechanical load is added to a synchronous motor and the magnetic coupling between the rotor and stator is broken, what would be the result to the motor's operation? 
   
 Select the  most correct answe r from the selection provided below

Answer

The out-of-step relay will re-activate the excitation current

Answer

An angular shift between poles will create a stronger torque

Answer

The motor will just stop

Answer

The damper winding will keep the speed up until magnetic coupling is re-established

Answer

The circuit breaker will trip due to high induced current

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If mechanical load is added to a synchronous motor and the magnetic coupling bet...

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