Top 350+ Solved Applied Mechanics MCQ Questions Answer
Q. A machine requires an effort of 10 kg to lift a load of 250 kg and an effort of 13 kg for a load of 400 kg. The effort required to lift a load of 500 kg will be
a. 25 kg
b. 107 dynes
c. 15 kg
d. 35 kg
e. 45 kg
Q. A flywheel weighs 400 kg and has a radius of gyration of 30 cm about its axis of rotation. It is mounted on a shaft subjected to a moment of 40 kgm. If the flywheel starts from restits speed after 3 seconds wil be
a. 10.9 rad/sec
b. 19.0 rad/sec
c. 51.2 rad/sec
d. 3.33 rad/sec
e. 16.35 rad/sec
Q. The satellite moves in a circle around the earth. The radius of this circle is equal to one-half the radius of the moons orbit. The satellite will complete one revolution in
a. 1 lunar month
c. 2-3/4 lunar month
d. 2-2/3 lunar month
e. None of the above
Q. In a tug of war, five men pull a rope to the left at A and six moen pull the rope at B. A weight of 5 kg is hung vertically from the centre of the rope. In order that the rope AB be horizontal
a. the force applied on A must be equal to that on B
b. at least one man on side B should be removed
c. infinite force will be required to be applied at both ends
d. the force required on A must not be equal to that on B
e. 107 dynes
Q. For the maximum range of a projectile the angle of projection should be
a. 90?
b. 30?
c. 22
d. 45?
e. 15?
Q. In a torsion pendulum
a. The body attached to the lower end of wire or rod must be elastic
b. The clamp must be elastic
c. The clamp must be elastic
d. (A) and (B) above
e. (A), (B) and (C) together
Q. A cable is supported at A and B, in which B is higher than A. The tension in the cable will be maximum at
a. A
b. A and B
c. C
d. B
e. 107 dynes
Q. A column has its equivalent length equal to its length in case of
a. one end fixed, other free
b. both ends hinged
c. one end hinged, other free
d. 107 dynes
e. both end fixed
Q. A particle in SHM while passing through mean position will have
a. maximum kinetic energy and maximum potential energy
b. 107 dynes
c. maximum kinetic energy and minimum potential energy
d. average kinetic energy and average potential energy.
e. minimum kinetic energy and maximum potential energy
Q. A jet of water of cross-sectional area 20 sq. cm impinges on a plate at an angle of 60? with a velocity of 10 m/sec. Neglecting the friction between the jet and plate (density of water 1000/9.81 kgm-1 sec2 per cubic meter), the force exerted by the jet on the plate would be in the range
a. 15 - 20 kg
b. 20 - 25 kg
c. 5 - 10 kg
d. 25 - 30 kg
e. 10 - 15 kg
Q. A flywheel starting from rest and accelerating uniformly performs 25 revolutions in 5 sec. Its angular velocity in rpm after 10 seconds would be
a. 50 rpm
b. 20 rpm
c. 25 rpm
d. 60 rpm
e. 45 rpm
Q. The coefficient of friction is
a. The tangent of the angle between the normal reaction and direction of limiting friction
b. The tangent of the angle between the normal reaction and the resultant of the normal reaction and the limiting friction
c. The tangent of the angle of the net resultant force with the direction of motion
d. The tangent of the angle between the horizontal plane and the resultant force
e. The angle between the normal reaction and the resultant of normal reaction and the limiting friction
Q. The maximum frictional force which comes into play when a body just begins to slide over the surface of another body is known as
a. Kinetic friction
b. Rolling friction
c. Dynamic friction
d. Limiting friction
e. Sliding friction