Electrical Machines
Two of supply terminals to a 3 - Φ induction motor get interchanged during re-connection after normal maintenance. When switched on the supply, the motor will

  get heated and damaged.
  rotate in the same direction as before maintenance.
  rotate in direction opposite to that before maintenance.
  not start at all.

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Electrical Machines
In a step down transformer which one of the following statements is true?

  Number of secondary turns is less than primary turns.
 Secondary power is less than primary power.
 Secondary current is less than primary current.
 Number of secondary turns is more than that of primary.

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Electrical Machines
The synchronous motor can be started by

  coupling it with a small AC induction motor called the pony motor.
  providing damper winding in its rotor circuit.
  coupling it with a DC compound motor.
  any of the above methods.

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