Question

Explain breifly nuclear reactor with diagram?​

Answer 1

Answer:

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 nuclear marine propulsion. Heat from nuclear fission is passed to a working fluid (water or gas), which in turn runs through steam turbines. These either drive a ship's propellers or turn electrical generators' shafts. Nuclear generated steam in principle can be used for industrial process heat or for district heating. Some reactors are used to produce isotopes for medical and industrial use, or for production of weapons-grade plutonium. As of early 2019, the IAEA reports there are 454 nuclear power reactors and 226 nuclear research reactors in operation around the world

Answer 2

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Nuclear reactor:

• Principle: It works on the principle of achieving controlled chain reaction of Uranium   238  U enriched with  235  U and as a result generating huge amount of energy.

• The controlled chain is made possible by :  

• slowing down the fission neutrons to thermal neutrons by using a moderator.  

• inserting rods that can absorb neutrons(control rods) and use them to maintain the reaction rate.