Nuclear Reactor — Prelims Questions

Which of the following materials is NOT typically used as a moderator in a nuclear reactor?

In a controlled nuclear chain reaction, what is the average number of neutrons from one fission event that go on to cause another fission event?

Which of the following is the primary purpose of the coolant in a nuclear reactor?

If a nuclear reactor is operating in a subcritical state, what will happen to the chain reaction?

The energy released in nuclear fission is primarily due to:

Which of the following is a primary safety feature designed to prevent the uncontrolled acceleration of a nuclear chain reaction?