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Chemical Engineering - Nuclear Power Engineering

Exercise : Nuclear Power Engineering - Section 5
21.
The velocity of thermal (slow) neutrons triggering nuclear fission reaction (having energy equal to 0.025 eV) is about __________ metres/second.
1100
2200
3300
4400
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
Thermal shield is used in high powered nuclear reactors to
protect the walls of the reactor from radiation damage.
absorb the fast neutrons.
slow down the secondary neutrons.
protect the fuel element from coming in contact with the coolant.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
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
3/4th of it will disintegrate in two months.
it will completely disintegrate in two months.
it will completely disintegrate in four months.
l/8th of it will remain intact at the end of four months.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
The 92U238 emits an a-particle. The product is
90U234
90U238
90U236
92U236
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
Graphite is used in nuclear reactor as
insulation lining of the reactor.
fuel.
lubricant.
retarder of neutron velocity.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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