Mechanical Engineering

Question: In nuclear power plants, due to reflector, less fuel is needed to generate sufficient neutrons to sustain a chain reaction.
[A].

Yes

[B].

No

Answer: Option A

Explanation:

No answer description available for this question.

Question: Materials which make good moderators do not make good reflectors.
[A].

Correct

[B].

Incorrect

Answer: Option B

Explanation:

No answer description available for this question.

Question: 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

Explanation:

No answer description available for this question.

Question: Ordinary water is sometimes used as moderator when enriched uranium is used as a fuel in nuclear power plants.
[A].

Yes

[B].

No

Answer: Option A

Explanation:

No answer description available for this question.

Question: Light weight substances can not be effective moderators.
[A].

True

[B].

False

Answer: Option B

Explanation:

No answer description available for this question.

Question: Enriched uranium may contain fissionable contents from
[A].

1 to 40%

[B].

10 to 50%

[C].

1 to 80%

[D].

1 to 99%

Answer: Option D

Explanation:

No answer description available for this question.

Question: Which of the following statement is correct regarding the features of a Breeder reactor?
[A].

It produces more fuel than it consumes.

[B].

It requires highly enriched fuel.

[C].

It requires liquid sodium metal as moderator.

[D].

all of the above

Answer: Option D

Explanation:

No answer description available for this question.

Question: A nuclear reactor is said to be critical when the neutron population in the reactor core is
[A].

rapidly increasing leading to the point of explosion

[B].

decreasing from the specified value

[C].

reduced to zero

[D].

constant

Answer: Option D

Explanation:

No answer description available for this question.

Question: A moderator
[A].

absorbs neutrons

[B].

does not absorb neutrons

[C].

accelerates neutrons

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: Nuclear reactors are used
[A].

to produce heat for thermoelectric power

[B].

to produce fissionable material

[C].

to propel ships, submarines, aircrafts

[D].

all of these

Answer: Option D

Explanation:

No answer description available for this question.