Question

Which reactor has no moderator and its core size is less?

(a) Fast reactor

(b) Burner reactor

(c) Thermal reactor

(d) Breeder reactor

I have been asked this question during an interview for a job.

My query is from Nuclear Reactor Components topic in chapter Nuclear Power Plant of Energy Engineering

Answer 1

Right answer is (a) Fast reactor

To elaborate: A fast reactor is a category of nuclear reactor in which the fission chain reaction is sustained by fast neutrons, as opposed to thermal neutrons used in thermal neutron reactors. The fission process is caused by fast neutrons and the reactor has no moderator and the core size less.