# Engineering Mechanics online quiz - Set 02

## Engineering Mechanics Online Quiz: Set - 02

1. Two equal and opposite parallel forces whose lines of action are different, can be replaced by a single force parallel to the given forces.
Correct
Incorrect

2. The maximum displacement of a body, from its mean position is called amplitude.
Correct
Incorrect

3. The acceleration of a particle moving with simple harmonic motion is proportional to the displacement of the particle from the mean position.
True
False

4. The force which acts along the radius of a circle and directed away from the centre of the circle is called centrifugal force.
Agree
Disagree

5. If the resultant of a number of forces acting on a body is zero, then the body will not be in equilibrium.
Yes
No

6. The angle of the inclined plane at which a body just begins to slide down the plane, is called helix angle.
True
False

7. The loss of kinetic energy due to direct impact of two bodies __________ upon the value of coefficient of restitution.
Depends
Does not depend

8. The time taken by a particle for one complete oscillation is known as periodic time.
Agree
Disagree

9. A machine which is capable of doing work in the reversed direction, after the effort is removed, is called a non-reversible machine.
Yes
No

10. When a particle moves along a circular path, its acceleration has two components, one is normal component and the other is tangential component of acceleration.
True
False

11. When a particle moves along a straight path, there will be centripetal acceleration as well as tangential acceleration.
Correct
Incorrect

12. The centre of oscillation and centre of suspension for a compound pendulum are interchangeable.
True
False

13. The terms 'leverage' and 'mechanical advantage' of a compound lever have got the same meaning.
Correct
Incorrect

14. A lift moves downwards with an acceleration of 9.8 m/s2. The pressure exerted by a man on the floor of the lift is zero.
True
False

15. The force which acts along the radius of a circle and directed towards the centre of the circle is known as centripetal force.
True
False

16. If a number of forces acting at a point be represented in magnitude and direction by the three sides of a triangle, taken in order, then the forces are not in equilibrium.
Agree
Disagree

17. Coefficient of friction is the ratio of the limiting friction to the normal reaction between the two bodies.
Yes
No

18. The total time taken by a projectile to reach maximum height and to return back to the ground, is known as time of flight.
Yes
No

19. The angle of inclination of a vehicle when moving along a circular path ________ upon its mass.
Depends
Does not depend

20. A resultant force is a single force which produces the same effect as produced by all the given forces acting on a body.
True
False

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