Electrical Machines
In DC series motor the speed is ______________ proportional to the armature current.

 has no relation.
 none of these.
 inversely.
 directly.

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Electrical Machines
Torque angle of a synchorous machine operating from a constant voltage bus is usually defined as the space angle between

 Stator mmf wave and resultant mmf wave.
 Rotor mmf wave and resultant flux density wave.
  Rotor mmf wave and stator mmf wave.
 Stator mmf wave and resultant flux density.

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