The purpose of a generator is to convert mechanical energy into which of the following?
A. Stored charge
B. A lower voltage
C. Electric energy
D. Thermal energy

C. Electric energy

Explanation:

A generator is designed to convert chemical energy to mechanical energy  and them electrical energy.

It is an alternate source of electricity for most homes and industrial establishments. The source of energy for the generator is a fuel usually fossil fuels. This energy source is ignited and it produces heat energy which drives the motion of the pistons in the set. As the piston moves, an magnetic field is cut through by a conducting wire. This inducts the production of currents.