Top 350+ Solved Applied Mechanics MCQ Questions Answer
Q. For a perfect frame having 13 members the number of joints must be
a. 8
b. 6
c. 7
d. 107 dynes
e. 9
Q. When a body moves round a fixed axis it will have
a. A motion of rotation and translation
b. A circular motion
c. A rotary motion
d. A translatory motion
e. A swinging motion
Q. The work done in sliding a block of weight of 50 kg up a plane inclined at an angle of 30? to the horizontal so that the block is lifted through 1 m (
a. More than 50 kgm
b. 50 kgm
c. Less than 5 kgm
d. 15 kgm only
e. None of the above
Q. For perfectly elastic bodies, the value of the coefficient of restitution is
a. 1
b. 0.372
c. 0.5
d. Zero
e. Any value between 0 and 1
Q. Secondary stresses may be set up in frame due to any of the following reasons EXCEPT
a. members not being straight
b. self-weight of the members
c. eccentricity of connections
d. rigidity of the members
e. 107 dynes
Q. Moment of Inertia of triangular section about an axis passing through its base is given by
a. bh3/12
b. bh3/32
c. bh3/36
d. None of the above
e. Tapered bearing
Q. Which of the following could be the unit of rotational inertia of a body in CGS system?
a. cm4
b. gm-cm2
c. 107 dynes
d. kg-cm2
e. gm-cm4
Q. The angular acceleration of a flywheel decreases uniformly from 8 rad/sec2 to 2 rad sec2 in 6 sec at which time its angular velocity is 42 rad/sec. The initial angular velocity was
a. 12 rad/sec
b. 24 rad/sec
c. 30 rad/sec
d. 3 rad/sec
e. 6 rad/sec
Q. During SHM which of the following is conserved?
a. Kinetic energy
b. Potential energy
c. Total energy
d. Momentum
e. All of the above
Q. The main advantage of using worm gears is
a. Low power loss
b. High velocity ratio
c. Ease of manufacture
d. Minimum cost
e. All of the above
Q. The angle of friction is
a. The angle which frictional force makes with the normal
b. The anle at which the force applied from external souce will cause movement
c. The angle at which fictional force is inclined to external force
d. The angle between the normal reaction and the resultant of normal reaction and the limiting friction
e. None of the above
Q. In the speed of rotation of earth decreases, the weight of the body will
a. Decrease
b. Remain unaltered
c. Depends on speed ratio
d. Cannot be ascertained on the basis the information given
e. Increase
Q. Which of the following is not a lever of the first order?
a. Pair of Smith's tongs
b. Wheel barrow
c. Ordinary balance
d. Pair of scissors
e. 107 dynes