Applied Mechanics And Graphic Statics Quiz Test : 300+ Best Questions

1. A body is dropped from a height of 100 m and at the same time another body is projected
vertically upward with a velocity of 10 m/sec. The two particles will

2. Cast iron

3. 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

4. If the kinetic energy and potential energy of a simple harmonic oscillator of amplitude A are both
equal to half the total energy, then the displacement is equal to

5. Impulse can be obtained from a

6. The instantaneous centre of a member lies at the point of intersection of two lines drawn at the
ends of the member such that the lines are inclined to the direction of motion of the ends at

7. A particle executes a simple harmonic motion. While passing through the mean position, the
particle possesses

8. The ratio of the moment of inertia of a rectangle about its centroidal axis to the moment of inertia
about its base, is

9. The bending moment in an arch is proportional to

10. Energy may be defined as

11. Time required to stop a car moving with a velocity 20 m/sec within a distance of 40 m, is

12. The pressure acting on the stones in stone masonry construction should be

13. A particle of mass 2 kg executes simple harmonic motion of frequency 6/71 Hz and amplitude 0.25m. Its maximum kinetic energy is

14. Excess of alumina in brick earth makes the brick

15. Minimum potential energy of a system will be in the position of

16. A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. The velocity ratio of the lifting machine is

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

18. Two balls of masses 3 kg and 6 kg are moving with velocities of 4 m/sec and 1 m/sec respectively, towards each other along the line of their centers. After impact the 3 kg ball comes to rest. This can happen only if the coefficient of restitution between the balls is

19. A Second's pendulum gains 2 minutes a day. To make it to keep correct time its length

20. The necessary condition of equilibrium of a body is:

21. At the instantaneous center, the velocity of the moving lamina at any instant is

22. If the resultant of two forces has the same magnitude as either of the force, then the angle
between the two forces is

23. A 2 m long ladder rests against a wall and makes an angle of 30° with the horizontal floor. Where
will be the instantaneous center of rotation when the ladder starts slipping?
(i) 1.0 in from the wall
(ii) 1.732 m from the wall
(iii) 1.0 m above the floor
(iv) 1.732 m above the floor
The correct answer is

24. Which one of the following laws is not applicable to a simple pendulum?

25. The centre of gravity of a triangle is at the point where three

26. If g1 and g2 are the gravitational accelerations on two mountains A and B respectively, the weight
of a body when transported from A to B will be multiplied by

27. A heavy ladder resting on floor and against a vertical wall may not be in equilibrium if

28. If the angle between the applied force and the direction of motion of a body, is between 90° and
180°, the work done, is called

29. A shell travelling with a horizontal velocity of 100 m/sec explodes and splits into two parts, one of
mass 10 kg and the other of 15 kg. The 15 kg mass drops vertically downward with initial velocity
of 100 m/sec and the 10 kg mass begins to travel at an angle to the horizontal of tan"1 x, where xis

30. The characteristic of a couple is:

31. Jumper is a tool used for

32. In a simple screw jack, the pitch of the screw is 9 mm and length of the handle operating the screw is 45 cm. The velocity ratio of the system is

33. Three forces which act on a rigid body to keep it in equilibrium. The forces must be coplanar and

34. If a set of given forces are such that their free vectors build a closed polygon, then

35. The piston of a steam engine moves with a simple harmonic motion. The crank rotates 120 r.p.m.
and the stroke length is 2 metres. The linear velocity of the piston when it is at a distance of 0.5
metre from the centre, is

36. The length of a Second's pendulum, is

37. To avoid bending action at the base of a pier,

38. If two forces are in equilibrium, then the forces must
(i) Be equal in magnitude
(ii) Be opposite in sense
(iii) Act along the same line
The correct answer is

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

40. One half of a vibration of a body, is called

41. A light rope is loaded with many equal weights at equal horizontal intervals. The points of
suspension on the rope lie on a

42. Joule is the unit of

43. The apparent weight of a man in a moving lift is less than his real weight when it is going down
with

44. A funicular polygon cannot be made to pass through

45. A system of coplanar forces acting on a rigid body can be reduced to

46. For lifting a load of 50 kg through a distance of 2.5 cm, an effort of 12.5 kg is moved through a
distance of 40 cm. The efficiency of the lifting machine, is

47. A train weighing 196 tonnes experiences a frictional resistance of 5 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

48. A disc of mass 4 kg, radius 0.5 m and moment of inertia 3 kgm² rolls on a horizontal surface so that its center moves with speed 5 m/see. Kinetic energy of the disc is

49. The maximum velocity of a body vibrating with a simple harmonic motion of amplitude 150 mm
and frequency 2 vibrations/sec, is

50. If two forces of 3 kg and 4 kg act at right angles to each other, their resultant force will be equal to