Nuclear Power Engineering MCQs

Question 1

Which of the following is not used as a moderator in nuclear reactor?

Accepted Answer

Molten sodium

Answer

Light water

Answer

Beryllium

Answer

Boron hydride

Question 2

Heavy water has maximum density at __________ °C.

Accepted Answer

11.6

Answer

4

Answer

0

Answer

18.6

Question 3

Safety rods provided in nuclear reactors to guard against accidents, in case of earthquake are made of

Accepted Answer

Boron or cadmium

Answer

High carbon steel

Answer

Molybdenum

Answer

Zircalloy

Question 4

MeV is the unit of

Accepted Answer

Energy

Answer

Radioactivity

Answer

Potential difference

Answer

None of these

Question 5

Extraction of uranium from its ore is done using __________ methods.

Accepted Answer

Chemical

Answer

Electrometallurgical

Answer

Pyrometallurgical

Answer

Physical beneficiation

Question 6

β-rays emission in radioactive disintegration is always accompanied by the emission of

Accepted Answer

γ-rays

Answer

α-rays

Answer

Neutrons

Answer

None of these

Question 7

An electron has a mass that is approximately __________ that of the proton.

Accepted Answer

$$\frac{1}{{1836}}$$ (approximately)

Answer

1836 (approximately)

Answer

1

Answer

$$\infty $$

Question 8

Water is a better coolant than a gas (like CO 2 , He, N 2 etc.), because it

Accepted Answer

All of the above

Answer

Is a better neutron moderator as well

Answer

Requires comparatively smaller pumps and heat exchanger for a given heat transfer rate

Answer

Has a better heat transfer characteristics and it can be pressurised to attain a high temperature

Question 9

Artificially produced radioactive isotopes are used for

Accepted Answer

Treatment of certain diseases

Answer

Power generation

Answer

Initiating nuclear fission and fusion

Answer

All of the above