Top 350+ Solved Applied Mechanics MCQ Questions Answer
Q. The power of a locomotive is 315 kW and the total weight of the train is 2000 kN. If the track resistance is 15 N per kN, the maximum speed that the locomotive can attain on level track will be
a. 43 kmph
b. 83 kmph
c. 103 kmph
d. 107 dynes
e. 38 kmph
Q. A particle is of wieght 8 kg. When it is allowed to fall under the force of gravity its momentum at the time t = 2 sec would be
a. 8 kg sec
b. 32 kg sec
c. 2 kg sec
d. 16 kg sec
e. 48 kg sec
Q. The maximum velocity of a body in SHM with amplitude of 150 mm and a frequency 2 vibrations/sec is equal to
a. 1.885 m/sec
b. 0.01885 m/sec
c. 0.1885 m/sec
d. 18.55 m/sec
e. 185.5 m/sec
Q. A wheel 8 mts in diameter coasts to rest from a speed of 800 rpm in 10 minutes. Its angular deceleration is
a. 308/min2
b. 683 rad/min2
c. 502 rad/min2
d. 107 dynes
e. 809 rad/min2
Q. The moment of inertia of a hollow circular section whose external diameter is 8 cm and interial diameter is 6 cm about the axis passing through its centre is
a. 66.8 cm4
b. 137.5 cm4
c. 550 cm4
d. 33.4 cm4
e. 275 cm4
Q. A rope of weight 0.5 kg/m hangs from a drum for a height of 6 m. The work done in winding up the rope will be
a. 9 kg-m
b. 3 kg-m
c. 12 kg-m
d. 18 kg-m
e. 6 kg-m
Q. The x coordinate of the centroid of the area enclosed by the parabolas y = x2 and x = y2 will be
a. 107 dynes
b. 0.44
c. 0.43
d. 0.45
e. 0.46
Q. According to Kepler's law of motion the square of the time period T of a planet around the sun is proportional to the
a. mean distance
b. square of the mean distance of planet from sun
c. cube of the mean distance of planet from sun
d. 107 dynes
e. 3/2 power of the mean distance
Q. Let the only force acting on two bodies be their mutual interactions. If both bodies start from rest, the distances travelled by each will be a
a. proportional to the respective masses of the bodies
b. 107 dynes
c. inversely proportional to the respective masses of the bodies
d. directly proportional to the square of the respective masses of the bodies
e. inversely proportional to the square of the respective masses of the bodies
Q. Kinetic friction is
a. Maximum value of frictional force when a body is about to move
b. Friction between two well lubricated bodies
c. Friction force acting when the body is in motion
d. Driction force which keeps a body in motion
e. None of the above
Q. When two forces acting at a point are such that if the direction of one is reversed, the direction of the resultant is turned through a right angle, the forces must be
a. inclined at more than 90?
b. inclined at less than 90?
c. equal in magnitude
d. acting at 180?
e. 107 dynes
Q. If w is the angular velocity of the pulley and T1 and T2 are tensions of driving and driven side then power transmitted equals
a. (T1 + T2) w
b. (T1 + 2T2) w
c. 107 dynes
d. (T1 - T2) w
e. wT1
Q. The ideal angle of banking provided on roads
a. Depends on (velocity)2 of vehicle
b. Depends on the nature of road surface
c. Depend on coefficient of friction between the road and the vehicle cantact point
d. Depends on weight of the vehicle
e. All above
Q. The moment of inertia of a thin ring about an axis perpendicular to plane of ring is
a. 1/3 Mr3
b. Mr2
c. Mr
d. Mr3
e. 1/2 Mr3
Q. A 2 kg block is dropped from a height of 4 metre onto a spring of force constant k = 1960 N/m. The spring will be compressed through
a. 1 cm
b. 4.5 cm
c. 3 cm
d. 8 cm
e. 107 dynes