Electrical Machines
In dc machines, 1. reactance voltage is proportional to armature current 2.reactance voltage is proportional to core length 3.reactance voltage is due to self-flux of the coil undergoing commutation 4. armature-cross flux is neutralized by interpolar flux 5. interpolarmmf is more than armature mmf in the interpolar zone From these, the correct answer is

 2, 3, 4
 1, 3, 5
 1, 2, 5
 1, 2, 3, 4

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

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

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