Electrical Machines
Two single-phase alternators operating in parallel have induced EMFs on open circuit of 230∠0° and 230∠10° volts and respective reactance of j2 Ω j3 Ω calculate the terminal voltage

  223.V.
 300 V.
 150 V.
 200 V.

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Electrical Machines
In a DC machine the armature mmf is

  stationary with respect to field poles.
  rotating with respect to field poles as well as armature.
 rotating with respect to field poles.
  stationary with respect to armature.

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