Applied Mechanics and Graphic Statics MCQs

Question 1

The dimensions of power are

Accepted Answer

ML2T-3

Answer

M2L2T-2

Answer

M2LT-2

Answer

MLT-2

Question 2

The Law of Polygon of Forces states that

Accepted Answer

If forces acting on a point can be represented of a polygon taken in order, their sides of a polygon taken in order, their resultant will be represented in magnitude and direction by the closing side

Answer

If a polygon representing the forces acting at point in a body is closed, the forces are in equilibrium

Answer

If forces acting on a point can be represented in magnitude and direction by the sides of a polygon taken in order, then the resultant of the forces will be represented in magnitude and direction by t

Answer

If forces acting on a point can be represented in magnitude and direction by the sides of a polygon in order, the forces are in equilibrium

Question 3

A cube on a smooth horizontal surface

Accepted Answer

Can be in any of these states

Answer

Cannot be in stable equilibrium

Answer

Cannot be in neutral equilibrium

Answer

Cannot be in unstable equilibrium

Question 4

The mechanical advantage of an ideal machine is 100. For moving the local through 2 m, the effort moves through

Accepted Answer

0.02 m

Answer

2 m

Answer

2.5 m

Answer

20 m

Question 5

The rate of change of displacement of a body with respect to its surrounding, is known

Accepted Answer

Velocity

Answer

Acceleration

Answer

Speed

Answer

None of these

Question 6

A train weighing 196 tonnes experiences a frictional resistance of $$5\frac{{11}}{{22}}$$ per tonne. The speed of the train at the top of a down gradient 1 in 78.4 is 36 km/hour. The speed of the train after running 1 km down the slope, is

Accepted Answer

$$5\sqrt {10} {	ext{ m/sec}}$$

Answer

$$10\sqrt 5 {	ext{ m/sec}}$$

Answer

$$5\sqrt 3 {	ext{ m/sec}}$$

Answer

$$3\sqrt 5 {	ext{ m/sec}}$$

Question 7

A trolley wire weighs 1 kg per metre length. The ends of the wire are attached to two poles 20 m apart. If the horizontal tension is 1000 kg, the central dip of the cable is

Accepted Answer

5 cm

Answer

2 cm

Answer

3 cm

Answer

4 cm

Question 8

A particle moves along a straight line such that distance ‘x’ traversed in ‘t’ seconds is given by x = t2(t + 1), the acceleration of the particle, will be

Accepted Answer

6t + 2

Answer

3t3 - 2t

Answer

3t2 + 2t

Answer

6t - 2

Question 9

A Seconds pendulum executes

Accepted Answer

1.0 beat per second

Answer

0.5 beat per second

Answer

2.0 beats per second

Answer

2.5 beats per second