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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

Enriched uranium is one in which__________________?
A %age of U235 has been artificially in-creased
B %age of U has been artificially increased
C %age of U234 has been artificially in-creased
D extra energy is pumped from outside
Correct Answer: %age of U235 has been artificially in-creased
Which of the following are ferrite materials__________________?
A U233andPu239
B U
C U238andPu239
D U238andTh239
Correct Answer: U
The main interest of shielding in nuclear reactor is protection against_______________?
A X-rays
B infra-red rays
C a, P, and y rays
D neutrons and gamma rays
Correct Answer: neutrons and gamma rays
Moderator in nuclear plants is used to__________________?
A reduce temperature
B extract heat from nuclear reaction
C control the reaction
D cause collision with the fast moving neutrons to reduce their speed
Correct Answer: cause collision with the fast moving neutrons to reduce their speed
The nuclear energy is measured as__________________?
A MeV
B curie
C farads
D MW
Correct Answer: MeV
Amongst the following, the fissionable materials are________________?
A U233andPu239
B U23iandPu233
C U235andPu235
D U238andPu239
Correct Answer: U233andPu239
Isotopes of same elements have___________________?
A same atomic number and different masses
B same chemical properties but different atomic numbers
C different masses and different atomic numbers
D different chemical properties and same atomic numbers
Correct Answer: same chemical properties but different atomic numbers
The efficiency of a nuclear power plant in comparsion to a conventional thermal power plant is________________?
A same
B more
C less
D may be less or mote depending on size
Correct Answer: less
Which of the following nuclear reactor does not need a heat exchanger for generation of steam____________________?
A gas cooled
B liquid metal cooled
C pressurised water
D boiling water
Correct Answer: boiling water
Fast breeder reactor uses___________________?
A boiler
B direct cycle of coolant system
C double circuit system of coolant cycle
D multi pass system
Correct Answer: double circuit system of coolant cycle
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