Electrical Machines
Consider the following statements regarding the speed control of dc motors : 1. ward-leonard method is suitable forconstant-torque drives 2. Ward-leonard method is suitable for constant-power drives 3. field-control method facilitates speed control below base speed 4. Armature-resistance control method is more efficient than ward-leanard method 5. Field-control method is suitable for constant-torque drives 6. Armature-resistance control method is suitable for constant-torque drives From these, the correct answer is

 1, 2, 6
 1, 2, 5
 1, 4, 6
 1, 3, 5

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

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

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