Electrical Machines
Secondary winding of an auto transformer is also called

 damping winding.
 compensating winding.
 tertiary winding.
  common winding.

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

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

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Electrical Machines
Ward-Leonard system for controlling the speed of a DC motor is used where

 The accuracy in speed control is required.
 Very fine speed control over the whole range from zero to normal speed is required.
 The speed in both the direction is required.
 All of above.

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