what kind of machine is a microwave oven and which type of m

Solution

the little motor that turns the plate is the only simple machine in a microwave in a Appliance tech.

A more microscopic understanding of microwave heating in terms of dielectric relaxation processes in liquids

In principle, a microwave oven heats no differently than any other type of heat transfer

Radio waves in this frequency range are absorbed by water, fats and sugars. When absorbed, they are converted directly into heat.