Electrical Machines
If any two leads from slip rings are interchanged in a 3 - Φ induction motor, the motor will

  get damaged.
  run in a direction opposite to previous one.
  continue running in the same direction as before.
  not run.

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Electrical Machines
In a synchronous motor when the rotor speed exceeds the synchronous speed during hunting

  the damper bars develop induction generator torque.
  the damper bars develop induction motor torque.
  negative sequence currents are generated.
  the damper bars develop synchronous motor torque.

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Electrical Machines
What will happen if the the supply terminals are reversed in case of a DC shunt motor?

 The motor will stop.
 The motor will run at its normal speed in the same direction as before.
 The motor will run in reverse direction.
 The motor will run much faster in the same direction.

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