Top 150+ Solved Engineering Mechanics MCQ Questions Answer
Q. The slope on the road surface generally provided on the curves is known as
a. angle of friction
b. angle of repose
c. angle of banking
d. none of these
Q. According to the law of moments, if a number of coplaner forces acting on a particle are in equilibrium, then
a. their algebraic sum is zero
b. their lines of action are at equal distances
c. the algebraic sum of their moments about any point in their plane is zero
d. the algebraic sum of their moments about any point is equal to the moment of their resultant force about the same point
Q. A force while acting on a body may
a. change its motion
b. balance the forces, already acting on it
c. give rise to the internal stresses in it
d. all of these
Q. For a self locking machine, the efficiency must be
a. equal to 50%
b. less than 50%
c. greater than 50%
d. 100%
Q. The maximum acceleration of a particle moving with simple harmonic motion is
a. ?
b. ?r
c. ?2r
d. ?/r
Q. The centre of gravity of a right angled triangle lies at its geometrical centre.
a. Correct
b. Incorrect
Q. The moment of inertia of a solid cone of mass m and base radius r about its vertical axis is
a. 3mr2 / 5
b. 3mr2 / 10
c. 2mr2 / 5
d. 4mr2 / 5
Q. Which of the following statement is correct?
a. The algebraic sum of the forces, constituting the couple is zero.
b. The algebraic sum of the forces, constituting the couple, about any point is the same.
c. A couple cannot be balanced by a single force but can be balanced only by a couple of opposite sense
d. all of the above
Q. The rate of doing work is known as
a. potential energy
b. kinetic energy
c. power
d. none of these
Q. Non-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