Top 350+ Solved Applied Mechanics MCQ Questions Answer
Q. In planetary motion
a. The total angular momentum remains constant
b. The total linear momentum remains constant
c. The total linear momentum is zero
d. The total angular momentum is zero
e. None of the above
Q. The moment of inertia of a semi-circle of radius r with respect to a centroidal axis parallel to the diameter is
a. 0.33 r2
b. 0.11 r2
c. 0.055 r2
d. 0.05 r2
e. 0.22 r2
Q. A satellite orbits the earth 200 km above the surface. What speed, in m/s, is necessary for a circular orbit? The radius of the earth is 6400 km and g = 9.2 m/s2
a. 7200
b. 6600
c. 7800
d. 6000
e. 107 dynes
Q. The curve of a catenary by nature is
a. hyperbolic
b. ellipse
c. 107 dynes
d. circular
e. parabolic
Q. The power of a locomotive is 315 kW and the total weight of the train is 2000 kN. If the track resistance is qN per kN, the maximum speed that the locomotive can attain on level track will be
a. 103 kmph
b. 83 kmph
c. 107 dynes
d. 43 kmph
e. 63 kmph
Q. If for power transmission a gear train consisting of 11 gears is used, then
a. the motion of driver and follower will be in the same direction
b. The motion of driver and follower will be in the opposite direction
c. either of (A) or (B) above
d. None of the above
e. 107 dynes
Q. A body weighing one tonne falls through 8 cm on to a spring of stiffness 500 kg/cm the spring will be compressed through
a. 8 cm
b. 6 cm
c. 4 cm
d. 10 cm
e. 12 cm
Q. What is the total acceleration of a point on the rim of a flywheel 4 mts in diameter 0.6 see after it has started from rest if it accelarates uniformly from rest to 2000 rpm in 20 secs.
a. 68.9 mts/sec2
b. 102.6 mts/sec2
c. 78.94 mts/sec2
d. 107 dynes
e. 33.2 mts/sec2
Q. Two identical weights are dropped simultaneously, one on water and the other in glycerine. Which of the following statement is correct?
a. The weight will settle slowly in water but quickly in glycerine
b. The weights will take same time to settle
c. The water level will fall but glycerine level will rise
d. The weight will settle quickly in water but slowly in glycerine
e. 107 dynes
Q. A wound watch spring possesses energy in the form of
a. Mechanical potential energy
b. Kinetic energy
c. Spring energy
d. Potential energy
e. Both potential and kinetic energy
Q. The earth's gravitational force field is said to be conservative force field because
a. The work acted by the earth's gravitational field on a particle is independent on the path traced out by the particle
b. The work acted by the erth's gravitational field will cause same path for all particles irrespective of their mass
c. The direction of gravitational force is fixed
d. The gravitational field has only single directional component always acting normal to a body
e. The value of gravitational force rise is fixed
Q. A body is vibrating with simple harmonic motion of aplitude 5 cm frequency 10 vibrations per second. The maximum value of velocity in cm/s will be
a. 3.14 cm/s
b. 314 cm/s
c. 3140 cm/s
d. 31.4 cm/s
e. 31400 cm/s
Q. The statement that the sum of the kinetic and potential energies of a particle in the earth's gravitational field is constant is known as
a. Principle of conservation of mechanical energy
b. Law of gravitation
c. Newton's law
d. Principle of conservation of momentum
e. Law of nature
Q. Which of the following is an example of a projectile?
a. Launching of a satellite
b. Taking off of an aircraft
c. Lifting of a balloon
d. Throwing of a cricket ball by a player
e. None of the above
Q. A grinding wheel is rotating at 3000 rpm. When the switch is turned off the wheel stops in 10 seconds. The uniform deceleration of the wheel was
a. 1 rad/s2
b. 31.4 rad/s2
c. 4 rad/s2
d. 62.8 rad/s2
e. 10.4 rad/s2