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Mechanical Engineering Objective Questions { Engineering Mechanics }



8. Effect of a force on a body depends upon
A.Magnitude
B.Direction
C.Position or line of action
D.All of the above

9. If a number of forces act simultaneously on a particle, it is possible
A.Not a replace them by a single force
B.To replace them by a single force
C.To replace them by a single force through C.G.
D.To replace them by a couple

10. A force is completely defined when we specify
A.Magnitude
B.Direction
C.Point of application
D.All of the above

11. If two equal forces of magnitude P act at an angle ? degree, their resultant will be
A.P/2 cos ?/2
B.2P sin ?/2
C.2P tan ?/2
D.2P cos ?/2

12. The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. This is as per the principle of
A.Forces
B.Resolution of forces
C.Dependence of forces
D.Balance of force

13. The resolved part of the resultant of two forces inclined at an angle ? in a given direction is equal to
A.The algebraic sum of the resolved parts of the forces in the given direction
B.The sum of the resolved parts of the forces in the given direction
C.The difference of the forces multiplied by the cosine of ?
D.The sum of the forces multiplied by the sine of ?

14. Which of the following do not have identical dimensions ?
A.Momentum and impulse
B.Moment of a force and angular momentum
C.Torque and work
D.Kinetic energy and potential energy

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