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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-4 section-1

Each section contains 100 MCQs on Power Plant Engineering .
31
Each fission of U235 produces on the average _________ fast neutrons as a product of reaction.
Discuss
Answer & Solution
Answer: Option A
Solution:
Each fission of U235 produces on the average 2.46 fast neutrons as a product of reaction.
32
Enriched uranium is required as a fuel in a nuclear reactor, if light water is used as moderator and coolant, because light water has
Discuss
Answer & Solution
Answer: Option B
Solution:
Enriched uranium is required as a fuel in a nuclear reactor, if light water is used as moderator and coolant, because light water has Low moderating efficiency
33
In triggering fission, which types of neutrons are more effective?
Discuss
Answer & Solution
Answer: Option B
Solution:
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
34
A nuclear reactor is said to be critical when the neutron population in the reactor core is
Discuss
Answer & Solution
Answer: Option D
Solution:
Criticality means that a reactor is controlling a sustained fission chain reaction, where each fission event releases a sufficient number of neutrons to maintain an ongoing series of reactions. This is the normal state of nuclear power generation.
35
Pick up the wrong statement
Discuss
Answer & Solution
Answer: Option D
Solution:
Fast reactors get more neutrons out of their primary fuel than thermal reactors, so many can be used to breed new fuel,
36
The fuel needed, with reflector in nuclear power plant, in order to generate sufficient neutrons to sustain a chain reaction, would be
Discuss
Answer & Solution
Answer: Option B
Solution:
The fuel needed, with reflector in nuclear power plant, in order to generate sufficient neutrons to sustain a chain reaction, would be Less
37
A power plant giving least running cost of production of electrical power is
Discuss
Answer & Solution
Answer: Option D
Solution:
A power plant giving least running cost of production of electrical power is Nuclear power plant
38
A fast breeder reactor uses
Discuss
Answer & Solution
Answer: Option A
Solution:
Breeder reactors are possible because of the proportion of uranium isotopes that exist in nature
A fast breeder reactor uses 90% U235.
39
Fast breeder reactor uses
Discuss
Answer & Solution
Answer: Option C
Solution:
Fast breeder reactor uses Double circuit system of coolant cycle
fast reactor uses a coolant that is not an efficient moderator, such as liquid sodium, so its neutrons remain high-energy.
This plutonium isotope can be reprocessed and used as more reactor fuel or in the production of nuclear weapons.
40
In order to have constant chain reaction to produce a constant rate of heat output, the value of ratio of the number of neutrons in one generation to the number of neutrons in the immediately preceding generation must be
Discuss
Answer & Solution
Answer: Option D
Solution:
In order to have constant chain reaction to produce a constant rate of heat output, the value of ratio of the number of neutrons in one generation to the number of neutrons in the immediately preceding generation must be Equal to 1.0