What is the main principle behind the operation of a DC generator?a.Electromagnetic inductionb. Piezoelectric effectc.Electrostatic attractiond.Photoelectric effect

explain how electromagnetic induction works in the context of a generator?

What are the main components of an electric generator?

What are the two main ways of generating electricity? How are they different from eachother

Explain why the d.c. from the generator must be changed to a.c. before it is transmitted.

What is AC generator? How is an AC generator used to produce an alternating current? Explain with the help of graph between instantaneous emf and time.