Question

what is nuclear reacter​

Answer 1

A nuclear reactor, formerly known as an atomic pile, is a device used to initiate and control a self-sustained nuclear chain reaction. Nuclear reactors are used at nuclear power plants for electricity generation and in propulsion of ships. ... These either drive a ship's propellers or turn electrical generators' shafts.

Answer 2

nuclear reactor is a place where Nuclear Fission for the production of electricity is done.