Top 150+ Solved Engineering Mechanics MCQ Questions Answer
Q. If tension in the cable supporting a lift moving downwards is half the tension when it is moving upwards, the acceleration of the lift is
a. g / 2
b. g / 3
c. g / 4
d. none of these
Q. The total energy possessed by a system of moving bodies
a. is constant at every instant
b. varies from point to point
c. is maximum in the start and minimum at the end
d. is minimum in the start and maximum at the end
Q. Moment of inertia of a circular section about an axis perpendicular to the section is
a. ?d3 / 16
b. ?d3 / 32
c. ?d4 / 32
d. ?d4 / 64
Q. A couple produces
a. translatory motion
b. rotational motion
c. combined translatory and rotational motion
d. none of the above
Q. A body will begin to move down an inclined plane if the angle of inclination of the plane is
a. equal to
b. less than
Q. Which of the following statement is wrong?
a. A force acting in the opposite direction to the motion of the body is called force of friction.
b. The ratio of the limiting friction to the normal reaction is called coefficient of friction.
c. A machine whose efficiency is 100% is known as an ideal machine.
d. The velocity ratio of a machine is the ratio of load lifted to the effort applie
Q. When a rigid body is suspended vertically, and it oscillates with a small amplitude under the action of the force of gravity, the body is known as
a. simple pendulum
b. compound pendulum
c. torsional pendulum
d. second's pendulum
Q. A machine having an efficiency less than 50%, is known as
a. reversible machine
b. non-reversible machine
c. neither reversible nor non-reversible machine
d. ideal machine