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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

Lancing is the operation of _________________?
A cutting a sheet of metal through part of its length and then bending the cut portion
B removal of metal to the desired shape from the edge of a plate
C cutting a sheet of metal in a straight line along the length
D bending a sheet of metal along a curved axis
Correct Answer: cutting a sheet of metal through part of its length and then bending the cut portion
The cold working of metals is carried out_________________?
A below the recrystallisation temperature
B at the recrystallisation temperature
C at any temperature
D above the recrystallisation temperature
Correct Answer: below the recrystallisation temperature
A neutral flame is obtained by supplying___________________?
A more volume of acetylene and less volume of oxygen
B equal volumes of oxygen and acetylene
C more volume of oxygen and less volume of acetylene
D none of the above
Correct Answer: equal volumes of oxygen and acetylene
In a _____________ , both cutting and non-cutting operations are performed at one station of the press in every stroke of the ram?
A progressive die
B simple die
C compound die
D combination die
Correct Answer: combination die
A file removes the metal during___________________?
A both forward and return strokes
B forward stroke
C return stroke
D none of these
Correct Answer: forward stroke
The mass number of a substance represents the sum of total number of___________________?
A protons and neutrons in an atom
B protons and electrons in an atom
C neutrons and electrons in an atom
D protons and neutrons in a nucleus
Correct Answer: protons and neutrons in a nucleus
The process by which a heavy nucleus is splitted into two light nuclei is known as_________________?
A splitting
B fission
C fusion
D disintegration
Correct Answer: fission
A nuclear fission produces energy of following order in MeV___________________?
A 20
B 200
C 2000
D 20,000
Correct Answer: 20
The breeding gain in case of thermal breeder reactor as compared to fast breeder reactor is________________?
A same
B lower
C higher
D unity
Correct Answer: lower
Which of the following is the heaviest________________?
A neutron
B proton
C atom
D electron
Correct Answer: atom
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