Nuclear Power Engineering MCQs

Question 1

Heavy water plant is not located at

Accepted Answer

Korba

Answer

Kota and Baroda

Answer

Talcher (Orissa)

Answer

Tuticorin(Tamilnadu)

Question 2

A boiling water reactor is the one, in which the

Accepted Answer

Coolant water is allowed to boil in the core of the reactor

Answer

Coolant water, after being heated in the reactor core, generates steam in a boiler

Answer

Pressurised water is pumped into the core

Answer

Fuel and the coolant are thoroughly mixed to form a homogeneous solution

Question 3

Neutrons have mass approximately equal to that of __________ atoms.

Accepted Answer

Hydrogen

Answer

Helium

Answer

Deuterium

Answer

None of these

Question 4

The half life period of a radioactive substance is best determined by counting the number of alpha particles emitted per second in a Geiger Muller counter from its known quantity. If the half life period of a radioactive substance is one month, then

Accepted Answer

It will completely disintegrate in two months

Answer

$${\frac{3}{4}^{{	ext{th}}}}$$ of it will disintegrate in two months

Answer

It will completely disintegrate in four months

Answer

$${\frac{l}{8}^{{	ext{th}}}}$$ of it will remain intact at the end of four months

Question 5

Absorption/scattering cross-section of an element is expressed in "barn", which is equivalent to

Accepted Answer

10 -24 cm 2

Answer

10 -12 cm

Answer

1 Angstrom

Answer

10 -24 cm

Question 6

Heavy water is preferred over ordinary water as a coolant, because it.

Accepted Answer

All of the above

Answer

Acts both as an efficient coolant as well as a moderator

Answer

Can be heated to a higher temperature without pressurizing

Answer

Is less prone to radiation damage

Question 7

Spent fuel from the nuclear thermal reactor contains

Accepted Answer

All of the above

Answer

Fission products

Answer

Plutonium

Answer

Unused fuel

Question 8

'Light water' used as a coolant in nuclear reactor is nothing but

Accepted Answer

Ordinary water

Answer

Mildly acidic (pH = 6) water

Answer

Mildly alkaline (pH = 8) water

Answer

None of these

Question 9

Heavy water (D 2 O) in a nuclear reactor serves as a

Accepted Answer

Both A & B

Answer

Coolant

Answer

Moderator

Answer

Neutron absorber