11. Moment of inertia of a triangular section of base (b) and height (h) about an axis through its base, is
bh3/4
bh3/8
bh3/ 12
bh3/ 36
✅ The correct answer is option C.
Engineering Mechanics MCQs
12. The range of projectile will be maximum for a given velocity of projectile, when the angle of projection (α) is
β/2
30° + β/2
45° + β/2
60° + β/2
✅ The correct answer is option C.
13. Coplaner concurrent forces are those forces which
meet at one point, but their lines of action do not lie on the same plane
do not meet at one point and their lines of action do not lie on the same plane
meet at one point and their lines of action also lie on the same plane
do not meet at one poi
✅ The correct answer is option C.
15. In order to determine the effects of a force, acting on a body, we must know
magnitude of the force
line of action of the force
nature of the force i,e. whether the force is push or pull
all of the above
✅ The correct answer is option D.
16. In order to completely specify angular displacement by a vector, it must fix
direction of the axis of rotation
magnitude of angular displacement
sense of angular displacement
all of these
✅ The correct answer is option D.
17. If the resultant of a number of forces acting on a body is zero, then the body will not be in equilibrium.
Yes
No
✅ The correct answer is option B.
18. In a framed structure, as shown in the below figure, the force in the member CD is tensile in nature.
Agree
Disagree
✅ The correct answer is option A.
19. Two equal and opposite parallel forces whose lines of action are different form a couple.
Correct
Incorrect
✅ The correct answer is option A.