Question

Which of the following statements is/are correct regarding the generation of EMF in rotating electrical machines in the armature winding? EMF is generated ____________

(a) by rotating armature windings through a magnetic field

(b) by rotating magnetic field with respect to the armature windings

(c) by designing the magnetic circuit to have variable reluctance with rotor rotation

(d) all of the mentioned

I have been asked this question in a national level competition.

The above asked question is from Generated EMF topic in chapter Principles of Electro mechanical Energy Conversions of Electrical Machines

Answer 1

Correct option is (d) all of the mentioned

The explanation is: All of the above mentioned methods will produce EMF in the armature windings.