Electrical Machines
If the speed of a dc motor increases with load torque, then it is a

 series motor
 differentially compounded motor
 comulatively compounded motor
 permanent magnet motor

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Electrical Machines
In a DC machine the armature mmf is

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

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