Electrical Machines
If the source voltage of a DC motor is increased, which of the following will decrease?

 Starting torque.
 Operating speed.
  Full load current.
 Starting torque, operating speed, full load current.

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Electrical Machines
In a stepper motor the detente torque means

  maximum of the static torque with the phase winding excited.
  minimum of the static torque with the phase winding excited.
  minimum of the static torque with the phase winding unexcited.
  maximum of the static torque with the phase winding unexcited.

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