Electrical Machines
Which of the following statement is true for an AC synchronous motor?

 It is a high reluctance motor.
 It is a step angled motor.
 It is a variable speed motor.
  It is a constant speed motor.

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Electrical Machines
The speed of a DC series motor is

 Proportional to field current.
 Proportional to the armature current.
 Inversely proportional to the armature current.
 Proportional to the square of the armature current.

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