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Power Plant Engineering MCQ Questions & Answers | Mechanical Engineering

Learn Power Plant Engineering MCQ questions & answers are available for a Mechanical Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Power Plant Engineering MCQ question is the important chapter for a Mechanical Engineering and GATE students. Page-8 section-1

Each section contains 100 MCQs on Power Plant Engineering .
71
The following present serious difficulty in designing reactor shield
Discuss
Answer & Solution
Answer: Option D
Solution:
Fast neutrons and gamma rays presance are serious difficulty in designing reactor shield
72
Uranium has isotopes
Discuss
Answer & Solution
Answer: Option D
Solution:
Uranium has isotopes
U234
U235
U238
73
The most commonly used moderator in nuclear plants is
Discuss
Answer & Solution
Answer: Option D
Solution:
Graphite is the most commonly used moderator in nuclear plants
74
Breeder reactor has a conversion ratio of
Discuss
Answer & Solution
Answer: Option B
Solution:
In a breeder reactor, the conversion ratio is higher than 1. "Break-even" is achieved when the conversion ratio reaches 1.0 and the reactor produces as much fissile material as it uses
75
Hydrogen is preferred as better coolant in comparison to CO2 because former
Discuss
Answer & Solution
Answer: Option C
Solution:
Hydrogen is preferred as better coolant in comparison to CO2 because former has high specific heat.
76
Half life of a radioactive isotope corresponds to the time required for half of the following to decay
Discuss
Answer & Solution
Answer: Option D
Solution:
Half life of a radioactive isotope corresponds to the time required for half of the atoms to decay
77
When a reactor becomes critical, then the production of neutrons is
Discuss
Answer & Solution
Answer: Option C
Solution:
When a reactor becomes critical, then the production of neutrons is Exactly balanced by the loss of neutrons through leakage
78
The energy released during the fission of one atom of Uranium 235 in million electron volts is about
Discuss
Answer & Solution
Answer: Option B
Solution:
The energy released during the fission of one atom of Uranium 235 in million electron volts is about 200
79
Plutonium is produced
Discuss
Answer & Solution
Answer: Option B
Solution:
Plutonium is made from U-238.
Pu-239 is normally created in nuclear reactors by transmutation of individual atoms of one of the isotopes of uranium present in the fuel rods.
Occasionally, when an atom of U-238 is exposed to neutron radiation, its nucleus will capture a neutron, changing it to U-239.
80
In triggering fission, the following types of neutrons are desirable
Discuss
Answer & Solution
Answer: Option B
Solution:
A visual representation of an induced nuclear fission event where a slow-moving neutron is absorbed by the nucleus of a uranium-235 atom, which fissions into two fast-moving lighter elements (fission products) and additional neutrons.