Question

what angle of rotation, the induced emf is maximum? explain with reason

Answer 1

Induced EMF is maximum when plane of armature is parallel to the lines of force of magnetic field

Explanation:

EMF is generated when a coil rotates in a magnetic field. The B-field is constant and the area of the loop is constant, but the angle between the field and the loop keeps changing and the EMF will vary with the angle. When the plane of the armature is parallel to the lines of force of magnetic field, the rate of change of magnetic flux linked with it is maximum. Therefore, the EMF induced in the armature in this orientation is maximum.