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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

Which one of the following statements is not correct_________________?
A the tangent of the angle of friction is equal to coefficient of friction
B the angle of repose is equal to angle of friction
C the tangent of the angle of repose is equal to coefficient of friction
D the sine of the angle of repose is equal to coefficient to friction
Correct Answer: the sine of the angle of repose is equal to coefficient to friction
Pick up the incorrect statement from the following ?
A The C.G. of a circle is at its center
B The C.G. of a triangle is at the intersection of its medians
C The C.G. of a rectangle is at the inter-section of its diagonals
D The C.G. of a semicircle is at a distance of r/2 from the center
Correct Answer: The C.G. of a semicircle is at a distance of r/2 from the center
Two coplanar couples having equal and opposite moments_________________?
A balance each other
B produce a couple and an unbalanced force
C are equivalent
D produce a moment of couple
Correct Answer: balance each other
On a ladder resting on smooth ground and leaning against vertical wall, the force of friction will be___________________?
A towards the wall at its upper end
B away from the wall at its upper end
C upwards at its upper end
D downwards at its upper end
Correct Answer: upwards at its upper end
The ratio of limiting friction and normal reaction is known as _____________________?
A coefficient of friction
B angle of friction
C angle of repose
D sliding friction
Correct Answer: coefficient of friction
A framed structure is perfect if it contains members equal to_________________?
A 2n-3
B n-l
C ‘2n-l
D n – 2
Correct Answer: 2n-3
In detennining stresses in frames by methods of sections, the frame is divided into two parts by an imaginary section drawn in such a way as not to cut more than____________________?
A two members with unknown forces of the frame
B three members with unknown forces of the frame
C four members with unknown forces of the frame
D three members with known forces of the frame
Correct Answer: three members with unknown forces of the frame
The center of gravity of a triangle lies at the point of __________________?
A concurrence of the medians
B intersection of its altitudes
C intersection of bisector of angles
D intersection of diagonals
Correct Answer: concurrence of the medians
The possible loading in various members of framed structures are_________________?
A compression or tension
B buckling or shear
C shear or tension
D all of the above
Correct Answer: compression or tension
Angle of friction is the_______________________?
A angle between normal reaction and the resultant of normal reaction and the limiting friction
B ratio of limiting friction and normal reaction
C the ratio of minimum friction force to the friction force acting when the body is just about to move
D the ratio of minimum friction force to friction force acting when the body is in motion
Correct Answer: angle between normal reaction and the resultant of normal reaction and the limiting friction
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