Question

name the electric device that converts mechanical energy into electrical energy.draw the labelled diagram and explain the priciple involve in this device.

Answer 1

A motor converts electric enrgy to mechanic energy

Answer 2

generator
Working principle of a DC generator: According to Faraday's laws of electromagnetic induction, whenever a conductor is placed in a varying magnetic field (OR a conductor is moved in a magnetic field), an emf (electromotive force) gets induced in the conductor.
Hope it helps☺