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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

A boiling water reactor uses following as fuel________________?
A enriched uranium
B plutonium
C thorium
D U
Correct Answer: enriched uranium
In nuclear fission___________________?
A the original elements change into completely different elements
B the electrons of the element change
C the molecules rearrange themselves to form other molecules
D none of the above
Correct Answer: the original elements change into completely different elements
For economical operation of a nuclear plant__________________?
A used fuel should be reprocessed
B moderator should be used
C coolant should be employed
D control rods should be used
Correct Answer: used fuel should be reprocessed
Each fission of U235 produces following number of fast neutrons per fission________________?
A 1 neutron
B 1 — neutrons
C 1 – 2 neutrons
D 2 — neutrons
Correct Answer: 2 — neutrons
A fast breeder reactor__________________?
A uses graphite rods as moderator
B has powerful moderator
C has no moderator
D uses ferrite material as moderator
Correct Answer: has no moderator
A fast breeder reactor uses following as fuel_________________?
A enriched uranium
B plutonium
C thorium
D U235
Correct Answer: U235
In boiling water reactor, moderator is__________________?
A coolant itself
B ferrite rod
C graphite rod
D liquid sodium metal
Correct Answer: coolant itself
Pressurised water reactor is designed________________?
A for boiling pi water in the core
B to use liquid sodium metal as coolant
C to use intermediate coolant
D to prevent the water coolant from boiling in the core
Correct Answer: to prevent the water coolant from boiling in the core
A fast breeder reactor uses_______________?
A 90% U-235
B U-238
C U-235
D Pu-239
Correct Answer: 90% U-235
Effective moderators are those materials which contain____________________?
A light weight atoms
B heavy weight atoms
C critical atoms
D zero weight atoms
Correct Answer: light weight atoms
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