Top 350+ Solved Applied Mechanics MCQ Questions Answer
Q. A gun fires shell with a muzzle velocity of 600 m/sec. The angle of inclination of the gun so that the shell hits a target at a distance of 32 km at level 100 m higher than the gun would be approximately?
a. 60?
b. 45?
c. 30?
d. 15?
e. Either of (A) and (C)
Q. A crate weighing 40 kg rests on a cart moving with an acceleration W. The coefficient of friction between the cart and the crate is
a. 2.45 m/sec2
b. 4.00 m/sec2
c. 0.25 m/sec2
d. 4.16 m/sec2
e. 1.25 m/sec2
Q. A flywheel 200 cm in diameter is rotating at 100 rpm. A point one the rim of the flywheel will not have
a. angular velocity
b. centripetal acceleration
c. tangential acceleration
d. all of the above
e. 107 dynes
Q. A man wished to move a block of size 3 m x 3 m weighing 80 kg. The coefficient of friction between the block and the ground is 0.27. Which of the following methods should be used?
a. Slide along the ground by pushing
b. Ask for cranes
c. Pull it
d. Tip it over
e. Lift it bodily
Q. The centroid of a triangle is at the inter-section of
a. perpendicular bisectors
b. 107 dynes
c. base and perpendicular from opposite vertex
d. perpendiculars down from the corners
e. medians
Q. If there are 3 pulleys in the first system, then the velocity ratio of this system will be
a. 8
b. 2
c. 4
d. 107 dynes
e. 6
Q. A locomotive of weight 100 tonnes is attached to train of wagons weighing 1000 tonnes. The locomotive pulls the wagons with a constant velocity of 36 km/hour. When the coupling between the train and wagons breaks, the wagons roll on 95 m in 10 sec. The distance between the locomotive and the wagons at this instant assuming that the forces acting on the train are unaltered would be
a. 0.36 m
b. 0.44 m
c. 0.77 m.
d. 0.5 m
e. 0.66 m
Q. A dash pot consists of a cylinder 10 cm in diameter in which slides a piston 12 cm long having a radial clearance of 1 mm. The cylinder is filled with oil having a viscosity of 1 poise. What will be the resistance offered by the piston to sliding with a velocity of 3 cm/sec
a. 1090 kg
b. 100 kg
c. 10900 kg
d. 10 kg
e. 50 kg
Q. A roller coaster reaches a velocity of 20 m/s at a location where the radius of curvature is 40 m. Calculate the acceleration in m/s2?
a. 10
b. 9
c. 11
d. 8
e. 107 dynes
Q. Rain drops (assumed to be spherical) of radii R1, 2R1, 3R, 4R,
a. all of them will be zero
b. all of them will be same
c. drops of radius R will be maximum
d. drops of radius R will be minimum
e. 107 dynes
Q. A rigid body is in equilibrium under the action of these forces when
a. These forces are equal
b. The lines of action of these forces are parallel
c. The lines of action of these forces meet in a point
d. (A) and (B) above
e. (B) and (C) above
Q. The coefficient of static friction will have the highest value in case of
a. Mild steel and mild steel
b. Mild steel and copper
c. Cast iron and steel
d. Rope and wood
e. Any of the above loctions
Q. A wheel accelerates from rest with an acceleration of 6 rad/sec2. How many revolutions are experienced in 4 seconds?
a. 12.36
b. 25.6
c. 9.82
d. 107 dynes
e. 7.64
Q. The moment of inertia of a body does not depend upon
a. The angular velocity of the body
b. Mass of the body
c. The distribution of mass in the body
d. The axis of rotation of the body
e. None of the above
Q. The tension in the wire rope supporting a lift moving with a uniform velocity
a. Is more when the lift is moving upwards
b. Is more when the lift is moving downwards
c. Is less when the lift is moving down-wards
d. Is less when the lift is moving upwards
e. Remains constant irrespective of the lift movement