Applied Mechanics and Graphic Statics MCQs

Question 1

A body A of mass 6.6 kg which is lying on a horizontal platform 4.5 m from its edge is connected to the end of a light string whose other end is supporting a body of mass 3.2 kg as shown in below figure. If the friction between the platform and the body A is $$\frac{1}{3}$$, the acceleration is

Accepted Answer

1.00 m/sec2

Answer

0.5 m/sec2

Answer

0.75 m/sec2

Answer

1.25 m/sec2

Question 2

A cylinder will slip on an inclined plane of inclination angle $$	heta $$ if the coefficient of static friction between plane and cylinder is

Accepted Answer

less than $$\frac{1}{3}	an 	heta $$

Answer

less than $$\frac{2}{3}	an 	heta $$

Answer

less than $$\frac{1}{3}\sin 	heta $$

Answer

less than $$\frac{2}{3}\sin 	heta $$

Question 3

The following factor affects the orbit of a satellite up to an altitude of 720 km from the earth's surface

Accepted Answer

None of these

Answer

Uneven distribution of the gravitational field

Answer

Gravity of the sun and the moon

Answer

Aerodynamic forces

Question 4

Pick up the incorrect statement from the following. In a simple harmonic motion

Accepted Answer

Acceleration is minimum at the end of the stroke

Answer

Velocity is maximum at its mean position

Answer

Velocity is minimum at the end of the stroke

Answer

Acceleration is zero at the mean position

Question 5

Pick up the incorrect statement from the following. In case of suspension bridge due to rise in temperature,

Accepted Answer

Dip of the cable decreases

Answer

Dip of the cable increases

Answer

Length of the cable increases

Answer

None of these

Question 6

Impulse can be obtained from a

Accepted Answer

Force-time diagram

Answer

Force-displacement diagram

Answer

Velocity-time diagram

Answer

Velocity-displacement diagram

Question 7

The angle of friction is:

Accepted Answer

The angle between the normal reaction and the resultant of normal reaction and limiting friction

Answer

The ratio of the friction and the normal reaction

Answer

The force of friction when the body is in motion

Answer

The force of friction at which the body is just about to move

Question 8

M.I. of a thin ring (external diameter D, internal diameter d) about an axis perpendicular to the plane of the ring, is

Accepted Answer

$$\frac{\pi }{{32}}\left( {{{	ext{D}}^4} - {{	ext{d}}^4}} ight)$$

Answer

$$\frac{\pi }{{64}}\left( {{{	ext{D}}^4} + {{	ext{d}}^4}} ight)$$

Answer

$$\frac{\pi }{{32}}\left( {{{	ext{D}}^4} + {{	ext{d}}^4}} ight)$$

Answer

$$\frac{\pi }{{32}}\left( {{{	ext{D}}^4} 	imes {{	ext{d}}^4}} ight)$$

Question 9

It is observed that in a certain sinusoidal oscillation, the amplitude is linearly dependent on the frequency f. If the maximum velocity during the oscillation is V, then V must be proportional to

Accepted Answer

f2

Answer

f

Answer

$$\frac{1}{{	ext{f}}}$$

Answer

$$\frac{1}{{{{	ext{f}}^2}}}$$