ELECTRICAL MACHINES QUIZ

  rotate in direction opposite to that before maintenance.

  not start at all.

  rotate in the same direction as before maintenance.

  get heated and damaged.

 remains constant.

 decreases with decrease in the load torque.

 decreases with increase in the load torque.

 increases with increase in the load torque.

 all of above.

 limit the starting current to a safer value.

 provide overload protection.

 provide protection against Low-Voltage.

 throughout the air gap.

None of these

 interpole region.

  region under main pole.

  Slip ring induction motor.

  Stepper motor.

  DC differential compound motor.

  Synchronous motor.

 equal to that of the effective length of the line.

 greater than that of hydro generator.

 greater than that of turbo alternator.

  none of these.

None of these

 pure capacitive load

 pure resistive load

 pure inductive load

 machine will generate maximum voltage.

 field winding will burn.

 machine will generate maximum power.

 the voltage generated will be zero.

 mechanical rotatory system.

  restoring torque.

 damping torque.

 synchronizing power co efficient.

 machine A

 machine B

 none of these

 any of the two machines