Applied Mechanics & Industrial Robotics MCQ

1. The path traced by a projectile in the sky, is

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2. The centre of gravity of a homogenous body is the point at which the whole

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3. The necessary condition of equilibrium of a body is

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4. Newton's Law of Motion is

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5. For a body moving with simple harmonic motion, the number of cycles per second, is known as its

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6. A body is said to move with Simple Harmonic Motion if its acceleration, is

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7. A geo-stationary satellite is one which orbits the earth with a velocity of rotation of

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8. To avoid bending action at the base of a pier

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9. Work may be defined as

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10. The motion of a bicycle wheel is

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11. 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

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12. The velocity of a moving body, is

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13. The total time of collision and restitution of two bodies is called

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14. When a body moves round a fixed axis, it has

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15. The angle of projection for a range is equal to the distance through which the particle would have fallen in order to acquire a velocity equal to the velocity of projection, will be

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16. Centrifugal force acting on a body, moving along a circular path, will be

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17. The angle of friction is

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18. Centre of gravity of a thin hollow cone lies on the axis of symmetry at a height of

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19. A smooth cylinder lying on its convex surface remains

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20. The force acting on a point on the surface of a rigid body may be considered to act

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21. The graphical method of determining the forces in the members of a truss is based on

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22. The diagram showing the point of application and line of action of forces in their plane is called

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23. The force polygon representing a set of forces in equilibrium is a

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24. Force polygon method is applicable for

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25. A system of coplanar forces is in equilibrium when

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

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27. Free body diagram is an

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28. In a lifting machine with efficiency 60%, an effort of 200 N is required to raise a load of 6 kN. The velocity ratio of the machine is

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29. In a lifting machine a weight of 5 kN is lifted through 200 mm by an effort of 0.1 kN moving through 15 m. The mechanical advantage and velocity ratio of the machine are respectively

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30. The condition for a lifting machine to be reversible is that its efficiency should be

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31. A stone was thrown vertically upwards from the ground with a velocity of 50 m/sec. After 5 seconds another stone was thrown vertically upwards from the same place. If both the stones strike the ground at the same time, then the velocity with which the second stone was thrown should be (Assume g = 10 m/sec2)

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32. The angular speed of a car taking a circular turn of radius 100 m at 36 km/hr will be

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33. Two objects moving with uniform speeds are 5 m apart after 1 second when they move towards each other and are 1 m apart when they move in the same direction.

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34. If a flywheel increases its speed from 10 rpm to 20 rpm in 10 seconds, then its angular acceleration is

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35. A shell of mass 100 kg travelling with a velocity of 10 m/sec breaks into two equal pieces during an explosion which provides an extra kinetic energy of 20000 Joules. If the pieces continue to move in the same direction as before, then the speed of the faster one must be

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36. A car goes round a curve of radius 100 m at 25 m/sec. The angle to the horizontal at which the road must be banked to prevent sideways friction on the car wheels is tan”1 x, where x is (Assume g = 10 m/sec2)

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37. 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 x is

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38. 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

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39. When a body slides down an inclined surface, the acceleration of the body is given by

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40. 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 centres. After impact the 3 kg ball comes to rest. This can happen only if the coefficient of restitution between the balls is

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41. A ball is dropped from a height of 16 m on a horizontal floor. If it rebounds to a height of 9 m after striking the floor, the coefficient of restitution between ball and floor is

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42. A particle is dropped from a height of 3 m on a horizontal floor, which has a coefficient of restitution with the ball of 1/2. The height to which the ball will rebound after striking the floor is

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43. A ball moving on a smooth horizontal table hits a rough vertical wall, the coefficient of restitution between ball and wall being 1/3. The ball rebounds at the same angle. The fraction of its kinetic energy lost is

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44. The maximum pull in a cable, carrying a uniformly distributed load and supported at two ends which are at the same level, is at

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

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46. Minimum pull in a suspended cable with supports at two ends is equal to

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47. 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

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48. Cartesian form of the equation of catenary is

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49. The shape of a suspended cable for a uniformly distributed load over it is

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50. Intrinsic equation of catenary is given by