Electrical Machines
In a 3-phase induction motor, if the supply voltage and frequency are reduced by the same ratio, then slip at which maximum torque occurs is

 more and maximum torque decreases
 more and maximum torque remains constant
 less and maximum torque decreases
 less and maximum torque increases

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Electrical Machines
Which of the following statements is/are correct statements?

 EMF per turn in both the windings are equal
All of these
 EMF per turn in HV winding is less than EMF per turn in LV winding
 EMF per turn in HV winding is more than EMF per turn in LV winding

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Electrical Machines
The compensating winding in a DC machine

 is located in armature slots for compensation of the armature reaction.
  is located on pole shoes to avoid the sparking at the brushes.
  is located on pole shoes for avoiding the flashover at the commutator.
 is located on commutating poles for improving commutation.

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