1000+ Nuclear Power Plant MCQ Questions and Answers - 1

Question: 1

A sodium graphite reactor uses sodium

(A) as moderator and sodium, graphite and water together as coolant

(B) with graphite as moderator and water as cobalt

(C) as moderator and graphics as coolant

(D) as coolant and graphite as moderator

Ans: D

as coolant and graphite as moderator

Question: 2

Purpose of moderator in nuclear reactors is to

(A) moderate the steam pressure to slow down the chain reaction

(B) slow down the neutrons produced in fission

(C) control the reactor temperature so that protons produced are less

(D) reduce nuclear pollution

Ans: B

slow down the neutrons produced in fission

Question: 3

A nuclear reactor is said to be 'critical' when the neutron population in the reactor core is

(A) reduced to zero

(B) constant

(C) decreasing from the specified value

(D) rapidly increasing leading to the point of explosion

Ans: B

constant

Question: 4

A fast breeder reactor uses which one of the following as fuel?

(A) enriched uranium

(B) plutonium

(C) u235

(D) thorium

Ans: C

u235

Question: 5

A nuclear unit becoming critical means

(A) chain reaction that causes automatic splitting of the fuel nuclei has been established

(B) there is danger of nuclear spread

(C) it is capable of generating power much more than the rated company

(D) it is generally power to rated capacity

Ans: D

it is generally power to rated capacity

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