Applied Mechanics and Graphic Statics MCQs

Question 1

Newton’s Law of Motion is:

Accepted Answer

All the above

Answer

Everybody continues in its state of rest or of uniform motion in a straight line, unless it is acted upon by some external force

Answer

The rate of change of momentum is directly proportional to the impressed force, and takes place in the same direction, in which the force acts

Answer

To every action, there is always an equal and opposite reaction

Question 2

Joule is the unit of

Accepted Answer

Work

Answer

Power

Answer

Impulse

Answer

Momentum

Question 3

Joule is the unit of

Accepted Answer

Work

Answer

Force

Answer

Power

Answer

Torque

Question 4

A block of weight 50 kg is placed on a horizontal plane. When a horizontal force of 18 kg is applied, the block is just on the point of motion. The angle of friction is

Accepted Answer

19° 48'

Answer

17° 48'

Answer

18° 48'

Answer

20° 48'

Question 5

In a simple harmonic motion, the position of equilibrium is always

Accepted Answer

Stable

Answer

Unstable

Answer

Neutral

Answer

None of the above

Question 6

The velocity ratio of an inclined plane of inclination ‘θ’ with horizontal for lifting a load is

Accepted Answer

cosec θ

Answer

sin θ

Answer

cos θ

Answer

tan θ

Question 7

The maximum displacement of a particle executing S.H.M. corresponds to

Accepted Answer

Zero kinetic energy and maximum potential energy

Answer

Zero potential energy and maximum kinetic energy

Answer

Maximum kinetic energy and maximum potential energy

Answer

Minimum kinetic energy and minimum potential energy

Question 8

A force P of 50 N and another force Q of unknown magnitude act at 90° to each other. They are balanced by a force of 130 N. The magnitude of Q is

Accepted Answer

120 N

Answer

60 N

Answer

80 N

Answer

100 N

Question 9

If two forces each equal to ‘T’ in magnitude act at right angles, their effect may be neutralized by a third force acting along their bisector in opposite direction whose magnitude will be

Accepted Answer

$$\sqrt 2 {	ext{ T}}$$

Answer

2T

Answer

$$\frac{1}{2}{	ext{T}}$$

Answer

3T