Top 150+ Solved Engineering Mechanics MCQ Questions Answer
Q. The angle between two forces when the resultant is maximum and minimum respectively are
a. 0? and 180?
b. 180? and 0?
c. 90? and 180?
d. 90? and 0?
Q. The angular velocity (in rad / s) of a body rotating at N revolutions per minute is
a. ? N / 60
b. ? N / 180
c. 2? N / 60
d. 2? N/180
Q. If P is the force acting on the body, m is the mass of the body and a is the acceleration of the body, then according to Newton's second law of motion,
a. P + m.a = 0
b. P - m.a = 0
c. P x m.a = 0
d. P/m.a = 0
Q. Coplaner concurrent forces are those forces which
a. meet at one point, but their lines of action do not lie on the same plane
b. do not meet at one point and their lines of action do not lie on the same plane
c. meet at one point and their lines of action also lie on the same plane
d. do not meet at one point, but their lines of action lie on the same plane
Q. The time of flight of a projectile on downward inclined plane depends upon
a. angle of projection
b. angle of inclination of the plane
c. both (a) and (b)
d. none of these
Q. Concurrent forces are those forces whose lines of action
a. lie on the same line
b. meet at one point
c. meet on the same plane
d. none of these
Q. During elastic impact, the relative velocity of the two bodies after impact is
a. equal to
b. equal and opposite to
c. less than
d. greater than
Q. Coefficient of friction depends upon
a. area of contact only
b. nature of surface only
c. both (a) and (b)
d. none of these
Q. Work done is said to be zero, when
a. some force acts on a body, but displacement is zero
b. no force acts on a body but some displacement takes place
c. either (a) or (b)
d. none of the above
Q. The moment of inertia of a square of side (a) about an axis through its centre of gravity is
a. a4/4
b. a4/8
c. a4/12
d. a4/36
Q. The centre of gravity of a quadrant of a circle lies along its central radius (r) at a distance of
a. 0.5 r
b. 0.6 r
c. 0.7 r
d. 0.8 r