Electrical Machines
Mechanical energy is supplied to DC generator at the rate of 4200 J / s. The generator delivers 32.2 Amp at 120 V. What is the percentage efficiency of the generator?

 205 V.
  201.02 V.
 210 V.
 212 V.

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Electrical Machines
In a stepper motor the detente torque means

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

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