M C Q s D r i v e

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.

The C.G. of a solid hemisphere lies on the central radius 3r_________________?
A at distance — from the plane base 3r
B at distance — from the plane base 3r
C at distance — from the plane base 3r
D at distance — from the plane base or
Correct Answer: at distance — from the plane base or
The C.G. of a right circular solid cone of height h lies at the following distance from the base________________?
A h/2
B J/3
C h/6
D h/4
Correct Answer: h/4
Which of the following is the example of lever of first order__________________?
A arm of man
B pair of scissors
C pair of clinical tongs
D all of the above
Correct Answer: all of the above
A cable with a uniformly distributed load per horizontal metre run will take the following shape_________________?
A straight line
B parabola
C hyperbola
D elliptical
Correct Answer: parabola
In actual machines_____________________?
A mechanical advantage is greater than velocity ratio
B mechanical advantage is equal to velocity ratio
C mechanical advantage is less than velocity ratio
D mechanical advantage is unity
Correct Answer: mechanical advantage is less than velocity ratio
A body moves, from rest with a constant acceleration of 5 m per sec. The distance covered in 5 sec is most nearly_______________?
A 38 m
B 62.5 m
C 96 m
D 124 m
Correct Answer: 62.5 m
The angle which an inclined plane makes with the horizontal when a body placed on it is about to move down is known as angle of __________________?
A friction
B limiting friction
C repose
D kinematic friction
Correct Answer: repose
The M.I. of hollow circular section about a central axis perpendicular to section as compared to its M.I. about horizontal axis is________________?
A same
B double
C half
D four times
Correct Answer: double
The C.G. of a plane lamina will not be at its geometrical centre in the case of a __________________?
A right angled triangle
B equilateral triangle
C square
D circle
Correct Answer: right angled triangle
A sample of metal weighs 219 gms in air, 180 gms in water, 120 gms in an unknown fluid. Then which is correct statement about density of metal__________________?
A density of metal can’t be determined
B metal is twice as dense as water
C metal will float in water
D metal is twice as dense as unknown fluid
Correct Answer: density of metal can’t be determined