Electrical Machines
Which of the following load normally needs starting torque more than rated torque?

 Blowers.
 Centrifugal pumps.
  Conveyers.
 Air compressors.

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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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