Applied Mechanics and Graphic Statics MCQs

Question 1

Time period and length of a second’s pendulum respectively are

Accepted Answer

2 sec and 99.4 cm

Answer

1 sec and 99.4 cm

Answer

1 sec and 92.7 cm

Answer

2 sec and 92.7 cm

Question 2

A cable loaded with 10 kN/m of span is stretched between supports in the same horizontal line 100 m apart. If the central dip is 10 m, then the maximum and minimum pull in the cable respectively are

Accepted Answer

1346.3 kN and 1250 kN

Answer

1346.3 kN and 1500 kN

Answer

1436.2 kN and 1250 kN

Answer

1436.2 kN and 1500 kN

Question 3

When a circular wheel rolls on a straight track, then the shape of body centrode and space centrode respectively are

Accepted Answer

Circle and straight line

Answer

Straight line and parabola

Answer

Straight line and circle

Answer

Circle and parabola

Question 4

Which of the following is a scalar quantity?

Accepted Answer

Energy

Answer

Momentum

Answer

Torque

Answer

Impulse

Question 5

The motion of a particle is described by the relation x = t2 - 10t + 30, where x is in meters and t in seconds. The total distance travelled by the particle from t = 0 to t = 10 seconds would be

Accepted Answer

Zero

Answer

30 m

Answer

50 m

Answer

60 m

Question 6

Two forces act an angle of 120°. If the greater force is 50 kg and their resultant is perpendicular to the smaller force, the smaller force is

Accepted Answer

25 kg

Answer

20 kg

Answer

30 kg

Answer

35 kg

Question 7

M.I. of solid sphere, is

Accepted Answer

$$\frac{2}{5}{	ext{M}}{{	ext{r}}^2}$$

Answer

$$\frac{2}{3}{	ext{M}}{{	ext{r}}^2}$$

Answer

$${	ext{M}}{{	ext{r}}^2}$$

Answer

$$\frac{1}{2}{	ext{M}}{{	ext{r}}^2}$$

Question 8

The following is not a law of static friction:

Accepted Answer

The force of friction always acts in a direction opposite to that in which the body tends to move

Answer

The force of friction is dependent upon the area of contact

Answer

The force of friction depends upon the roughness of the surface

Answer

The magnitude of the limiting friction bears a constant ratio to the normal reaction between two surfaces

Question 9

A hoop of radius 3 m weighs 100 kg. It rolls along a horizontal floor so that at its centre of mass has a speed of 200 mm/sec. The work required to stop the hoop is

Accepted Answer

4 J

Answer

2 J

Answer

6 J

Answer

8 J