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Nuclear Power Engineering
Comments
Question
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
Correct Answer
natural uranium fuelled heavy water cooled & moderated
Nuclear Power Engineering problems
Search Results
1. Unit of radioactivity is
Options
A. barn
B. fermi
C. angstrom
D. curie
Show Answer
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Discuss
Correct Answer: curie
2. Pick out the wrong statement.
Options
A. The ratio of the density of the 'nucleus' to that of the 'atom' is 10
12
.
B. ?-particle is identical with a doubly charged helium ion.
C. The mass of deuterium atom is half that of helium atom.
D. Gamma rays are high energy electrons.
Show Answer
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Discuss
Correct Answer: Gamma rays are high energy electrons.
3. Which of the following nuclear materials is fissile?
Options
A. Uranium-238
B. Thorium-232
C. Plutonium-239
D. None of these
Show Answer
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Discuss
Correct Answer: Plutonium-239
4. The first underground nuclear test was conducted by India at
Options
A. Jaisalmer
B. Pokharan
C. Kalpakkam
D. Narora
Show Answer
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Discuss
Correct Answer: Pokharan
5. Heavy water used in the nuclear reactors to slow down the speed of neutrons is
Options
A. highly purified water.
B. a compound of oxygen and deuterium.
C. water having dissolved salts of heavy metals.
D. none of these.
Show Answer
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Correct Answer: a compound of oxygen and deuterium.
6. 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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Correct Answer: 1
7. 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.
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Correct Answer: progressively decreases.
8. 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
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Correct Answer: 1.44 T
9. "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
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Correct Answer: sustainment of chain reaction.
10. 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).
Show Answer
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Discuss
Correct Answer: all (a), (b) and (c).
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