Power Plant Engineering (2171910) MCQs

MCQs of Nuclear Power Plant

Showing 11 to 20 out of 57 Questions
1 2 3 4 5 6
11.

Which of the following is the most essential requirement of control rod material?

(a)

It must be light weight
(b)

It must be cheap
(c)

It must have high absorption capacity for neutrons
(d)

It must be very reflective to neutrons
Answer:

Option (c)

12.

A moderator generally used in nuclear power plants is

(a)

graphite
(b)

heavy water
(c)

concrete
(d)

graphite and concrete
Answer:

Option (d)

13.

 Which of the following material is not used as moderator?

(a)

Oxygen
(b)

Ordinary water
(c)

Heavy water
(d)

Graphite
Answer:

Option (a)

14.

The predominent isotope of the naturally occuring element is

(a)

U235
(b)

U238
(c)

Pu233
(d)

Pu239
Answer:

Option (b)

15.

A moderator in nuclear power plants is a medium introduced into the fuel mass in order to

(a)

slow down the speed of fast moving neutrons
(b)

control the reaction
(c)

reduce the temperature
(d)

extract heat from nuclear reaction
Answer:

Option (a)

16.

A moderator

(a)

absorbs neutron       
(b)

does not absorb neutrons
(c)

accelerates neutrons
(d)

none of these
Answer:

Option (b)

17.

A moderator, apart from its high neutron slowing power, and low non-productive neutron, should be

(a)

stable under nuclear radiation
(b)

corrossion resistant
(c)

good thermal conductor
(d)

all of these
Answer:

Option (d)

18.

The function of coolant is to

(a)

extract heat from reactor
(b)

slow down neutrons
(c)

control the reaction
(d)

reflect the neutrons
Answer:

Option (a)

19.

The control rods in the control system of nuclear reactors are used to

(a)

absorb excess neutrons
(b)

control fuel consumption
(c)

control temperature
(d)

all of these
Answer:

Option (a)

20.

Which of the following can be used as both as coolant and moderator ?

(a)

Helium
(b)

Molten sodium
(c)

Lithium
(d)

Ordinary water
Answer:

Option (d)

Showing 11 to 20 out of 57 Questions
1 2 3 4 5 6