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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

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Mechanical Engineering MCQs prepared for job test and interview preparation, especially for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover key topics such as Machine Design, Theory of Machines, Hydraulic Machines, and other important mechanical engineering concepts.

All Topics  1919

The nuclear power plant at Tarapur has the following reactor________________?
A fast breeder
B pressurised water
C boiling water
D sodium graphite
Correct Answer: boiling water
The number of isotopes of hydrogen are _________________?
A 1
B 2
C 3
D
Correct Answer: 3
Reflector in nuclear plants is used to________________?
A return the neutrons back into the core
B shield the radioactivity completely
C check polllution
D conserve energy
Correct Answer: return the neutrons back into the core
The commonly used material for shielding is__________________?
A lead or concrete
B lead and tin
C graphite or cadmium
D thick galvanised sheets
Correct Answer: lead or concrete
The energy required to be applied to a radioactive nucleus for the emission of a neutron is________________?
A 1 MeV
B 2.4 MeV
C 4.3 MeV
D 7.8 MeV
Correct Answer: 7.8 MeV
Ferrite material is____________________?
A the most fissionable material
B the basic fuel for nuclear paints
C basic raw material for nuclear plants
D the material which absorbs neutrons and undergoes spontaneous changes leading to the formation of fissionable material
Correct Answer: the material which absorbs neutrons and undergoes spontaneous changes leading to the formation of fissionable material
Which of the following particles is the lightest__________________?
A nucleus
B electron
C proton
D meson
Correct Answer: electron
In nuclear fission each neutron that causes fission releases_______________?
A no new neutron
B at least one new neutron
C one new neutron
D more than one new neutrons
Correct Answer: one new neutron
Gas cooled reactor uses following materials as moderator, and coolant____________________?
A graphite, C02
B graphite, air
C heavy water, C02
D lead, H2
Correct Answer: graphite, C02
A nuclear fission is initiated when the critical energy as compared to neutron binding energy of the atoms is_________________?
A same
B more
C less
D there is no such criterion
Correct Answer: more
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