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Chemical Engineering
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Nuclear Power Engineering
Comments
Question
The main ore of uranium is
Options
A. pitchblende
B. monazite sand
C. cassiterite
D. chalcopyrite
Correct Answer
pitchblende
Nuclear Power Engineering problems
Search Results
1. H
2
is a better coolant than CO
2
, due to its relatively
Options
A. lower density.
B. higher specific heat.
C. non-reactivity to uranium.
D. lower neutron capture cross-section.
Show Answer
Scratch Pad
Discuss
Correct Answer: higher specific heat.
2. Coolant used in a fast breeder reactor is
Options
A. molten sodium
B. heavy water
C. ordinary water
D. helium
Show Answer
Scratch Pad
Discuss
Correct Answer: molten sodium
3. Bhabha Atomic Research Centre (BARC) located at Trombay (near Bombay) has
Options
A. five operating research reactors (namely Apsara, Cirus Zerelina, Purnima and Dhurva).
B. a 420 MW nuclear power plant.
C. a very large capacity (100 tons/yr) heavy water plant.
D. all (a), (b) and (c).
Show Answer
Scratch Pad
Discuss
Correct Answer: five operating research reactors (namely Apsara, Cirus Zerelina, Purnima and Dhurva).
4. Which of the following gases has very high neutron capture cross-section, making it unsuitable as a coolant in nuclear reactor?
Options
A. N
2
B. He
C. CO
2
D. H
2
Show Answer
Scratch Pad
Discuss
Correct Answer: N
2
5. Secondary cooling circuit is a must in molten sodium cooled fast breeder reactor for
Options
A. achieving high degree of superheat in the steam.
B. faster heat removal rate from the core.
C. lowering the coolant circulation pressure.
D. avoiding the mixing of water with radioactive sodium, as it may cause explosion.
Show Answer
Scratch Pad
Discuss
Correct Answer: avoiding the mixing of water with radioactive sodium, as it may cause explosion.
6. Which of the following is the most harmful for the human being?
Options
A. ?-rays
B. X-rays
C. ?-rays
D. ultra violet rays
Show Answer
Scratch Pad
Discuss
Correct Answer: ?-rays
7. Use of molten metal as a coolant in fast breeder reactor helps in
Options
A. rapid heat transfer from the core.
B. accelerating the reaction rate in the core.
C. breeding neutrons.
D. accelerating the neutrons.
Show Answer
Scratch Pad
Discuss
Correct Answer: rapid heat transfer from the core.
8. A radioactive isotope undergoes decay with respect to time following __________ law.
Options
A. logarithmic
B. exponential
C. linear
D. inverse square
Show Answer
Scratch Pad
Discuss
Correct Answer: exponential
9. The electric power generation cost in nuclear power plant is less than that in a coal based thermal power plant, mainly because the
Options
A. fuel cost per unit power generated is less.
B. thermal efficiency of the former is higher.
C. maintenance cost of the former is less.
D. none of these.
Show Answer
Scratch Pad
Discuss
Correct Answer: fuel cost per unit power generated is less.
10. Critical energy should be __________ the neutron binding energy of the atom in order to initiate a nuclear fission.
Options
A. equal to
B. less than
C. more than
D. either more or less
Show Answer
Scratch Pad
Discuss
Correct Answer: more than
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