Nuclear Power Engineering - Section 1 (4)

Directions to Solve

Nuclear Power Engineering - Section 1

This is engineering branch and you will find many MCQs
available on this topic which are asked in tests and you will find these MCQs in this section.

25.

The atomic number of a radioactive element is not changed, when it emits __________ rays.

A.	α
B.	β
C.	γ
D.	α & β

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

26.

Ordinary water is not used as a moderator because, it

A.	has a low absorption cross-section.
B.	has a low scattering cross-section.
C.	absorbs neutrons.
D.	does not absorb neutrons.

Answer: Option C

Explanation:

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27.

Moderating material used in a thermal-reactor should be a

A.	good absorber of neutrons.
B.	solid substance.
C.	poor absorber of neutrons.
D.	none of these.

Answer: Option C

Explanation:

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28.

Which is used as a coolant in nuclear reactor due to its high capture cross-section ?

A.	H 2
B.	N 2
C.	He
D.	CO 2

Answer: Option A

Explanation:

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29.

A boiling water reactor is the one, in which the

A.	coolant water is allowed to boil in the core of the reactor.
B.	coolant water, after being heated in the reactor core, generates steam in a boiler.
C.	pressurised water is pumped into the core.
D.	fuel and the coolant are thoroughly mixed to form a homogeneous solution.

Answer: Option A

Explanation:

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30.

Spent fuel from the nuclear thermal reactor contains

A.	fission products
B.	plutonium
C.	unused fuel
D.	all (a), (b) & (c)

Answer: Option D

Explanation:

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31.

Commercial power generation from fusion reactor is not yet possible, because

A.	it is difficult to control fusion reaction.
B.	the fuel required (e.g. deuterium and tritium) is scarce.
C.	it is difficult to initiate fusion reaction.
D.	quantity of fuel required for initiating fusion reaction is prohibitively high.

Answer: Option A

Explanation:

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32.

One 'amu' is equivalent to

A.	9.31 MeV
B.	931 eV
C.	931 Mev
D.	931J

Answer: Option C

Explanation:

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