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Nuclear Power Engineering
Comments
Question
Heavy water is preferred over ordinary water as a coolant, because it.
Options
A. acts both as an efficient coolant as well as a moderator.
B. can be heated to a higher temperature without pressurizing.
C. is less prone to radiation damage.
D. all (a), (b) and (c).
Correct Answer
all (a), (b) and (c).
Nuclear Power Engineering problems
Search Results
1. "Critical mass" is the minimum mass of nuclear fissile material required for the
Options
A. sustainment of chain reaction.
B. power generation on commercial scale.
C. economic power generation.
D. none of these.
Show Answer
Scratch Pad
Discuss
Correct Answer: sustainment of chain reaction.
2. What is the average life of a radioactive atom having a 'half life period' of T?
Options
A. 1.44 T
B. 0.144 T
C. 14.4 T
D. 2T
Show Answer
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Correct Answer: 1.44 T
3. The disintegration rate of a radioactive element
Options
A. progressively increases.
B. progressively decreases.
C. remains constant throughout.
D. may increase or decrease depending on the material.
Show Answer
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Correct Answer: progressively decreases.
4. The ratio of neutrons to protons of an element having a mass number and atomic number of 80 and 40 respectively is
Options
A. 1
B. 0.5
C. 2
D. 4
Show Answer
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Discuss
Correct Answer: 1
5. Candu reactor is a __________ nuclcear reactor.
Options
A. natural uranium fuelled heavy water cooled & moderated
B. highly enriched uranium (85% U-235) fuelled
C. homogeneous
D. fast breeder
Show Answer
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Correct Answer: natural uranium fuelled heavy water cooled & moderated
6. Neutrons have mass approximately equal to that of __________ atoms.
Options
A. hydrogen
B. helium
C. deuterium
D. none of these
Show Answer
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Discuss
Correct Answer: hydrogen
7. The main ore of thorium is
Options
A. pitchblende
B. monazite sand
C. limonite
D. galena
Show Answer
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Discuss
Correct Answer: monazite sand
8. Function of control rod in a nuclear reactor is to control
Options
A. temperature
B. pressure
C. fuel consumption
D. absorption of neutrons
Show Answer
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Discuss
Correct Answer: absorption of neutrons
9. The number of neutrons in the nucleus of Uranium-233 (
92
U
233
) is
Options
A. 141
B. 92
C. 233
D. 325
Show Answer
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Correct Answer: 141
10. Commercial power generation from fusion reactor is not yet possible, because
Options
A. it is difficult to control nuclear fusion reaction.
B. the fuel required (i.e., deuterium & tritium) is scarce.
C. it is difficult to initiate fusion reaction.
D. quantity of fuel required for initiating fusion reaction is prohibitively high.
Show Answer
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Discuss
Correct Answer: it is difficult to control nuclear fusion reaction.
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