Question

what is dynamo how it converts mevhanical energy in to electrical energy

Answer 1

Dynamo is an older term used to describe a generator that makesdirect current power. DC power sends electrons in only one direction. The problem with a simple generator is that when the rotor rotates it eventually turns completely around, reversing the current. Early inventors didn't know what to do withthis alternatingcurrent, alternating current is morecomplex to control and design motors and lights for. Early inventors had to figure a way to only capture the positive energyof the generator (generator set), so they invented a commutator. The commutator is a switch that allows current to only flow in one direction.The Dynamo consists of 3 major components: the stator, the armature, and the commutator.

Answer 2

It is the reverse of an electric motor.
It converts mechanical Energy into chemical energy by rotating at high speeds, due to wind, water etc.