Power Plant Engineering MCQ Questions & Answers

1

A fast breeder reactor

A) Uses graphite rods as moderator B) Has powerful moderator C) Has no moderator D) Uses ferrite material as moderator

Discuss

Answer & Solution

Answer: Option C

Solution:

fast breeder reactor means that sufficient fissions can be initiated by the capture of high energy (fast) neutrons.
Moderators are used to slow down the neutrons without absorbing them.
In a fast breeder reactor no moderator is required

2

Which of the following is the primary fuel?

A) U₂₃₃ B) U C) U₂₃₈ D) Pu

Discuss

Answer & Solution

Answer: Option B

Solution:

Uranium-235 is the fuel that is used in a nuclear reactor to sustain a nuclear chain reaction.
These fuels are fissile and the most common nuclear fuels are the radioactive metals uranium-235 and plutonium-239.

3

In boiling water reactor, moderator is

A) Coolant itself B) Ferrite rod C) Graphite rod D) Liquid sodium metal

Discuss

Answer & Solution

Answer: Option A

Solution:

A boiling water reactor (BWR) uses demineralized water as a coolant and neutron moderator.
Heat is produced by nuclear fission in the reactor core, and this causes the cooling water to boil, producing steam.

4

Each fission of U₂₃₅ produces following number of fast neutrons per fission

A) 1 neutron B) 3 neutrons C) 1, 2 neutrons D) 2 neutrons

Discuss

Answer & Solution

Answer: Option D

Solution:

Each fission of U₂₃₅ produces following number of fast neutrons per fission 2 neutrons.
Nuclear fission is the process in which a large nucleus splits into two smaller nuclei with the release of energy.
In other words, fission the process in which a nucleus is divided into two or more fragments and neutrons and energy are released.

5

Atomic number of an element in the periodic table represents the numbers of

A) Protons in the nucleus B) Electrons in the nucleus C) Neutrons in the nucleus D) Electrons in the atom

Discuss

Answer & Solution

Answer: Option A

Solution:

Atomic number of an element in the periodic table represents the numbers of Protons in the nucleus

6

U₂₃₃ is produced

A) As basic raw material B) By neutron irradiation of Uz C) By neutron irradiation of thorium D) Artificially

Discuss

Answer & Solution

Answer: Option C

Solution:

Uranium-233 is produced by the neutron irradiation of thorium-232.

7

U₂₃₃ is produced

A) Artificially B) As basic raw material C) When thorium is irradiated by neutrons D) By fission of U₂₃₈

Discuss

Answer & Solution

Answer: Option C

Solution:

Uranium-233 is produced by the neutron irradiation of thorium-232.

8

Plutonium (Pu₂₃₉) is produced

A) Artificially B) When U₂₃₈ is irradiated by neutrons C) By fission of Th₂₃₂ D) As basic raw material

Discuss

Answer & Solution

Answer: Option B

Solution:

Plutonium is made from U₂₃₈.
Pu₂₃₉ is normally created in nuclear reactors by transmutation of individual atoms of one of the isotopes of uranium present in the fuel rods.

9

Plutonium (Pu₂₃₉) is produced

A) Artificially B) By fission of Th₂₃₂ C) When U₂₃₈ is irradiated by neutrons D) As basic raw material

Discuss

Answer & Solution

Answer: Option C

Solution:

Plutonium is made from U₂₃₈.
Pu₂₃₉ is normally created in nuclear reactors by transmutation of individual atoms of one of the isotopes of uranium present in the fuel rods.

10

The process by which a heavy nucleus is spitted into two light nuclei is known as

A) Splitting B) Fission C) Fusion D) Disintegration

Discuss

Answer & Solution

Answer: Option B

Solution:

Nuclear fission is a process in which the nucleus of an atom splits into two or more smaller nuclei as fission products, and usually some by-product particles.
fission is a form of elemental transmutation

Power Plant Engineering MCQ Questions & Answers | Mechanical Engineering