Engineering Mechanics Objective Questions and Answers

22. According to principle of transmissibility of forces, the effect of a force upon a body is

23. Which of the following is a vector quantity

24. The magnitude of two forces, which when acting at right angle produce resultant force of √10kg and when acting at 60° produce resultant of √13kg These forces are

25. A number of forces acting at a point will be in equilibrium if

A. Their total sum is zero

B. Two resolved parts in two directions at right angles are equal

C. Sum of resolved parts in any two perpendicular directions are both zero

D. All of them are inclined equally

Discussion

26. Two non-collinear parallel equal forces acting in opposite direction

A. Balance each other

B. Constitute a moment

C. Constitute a couple

D. Constitute a moment of couple

Discussion

27. According to principle of moments

A. If a system of coplanar forces is in equilibrium, then their algebraic sum is zero

B. If a system of coplanar forces is in equilibrium, then the algebraic sum of their moments about any point in their plane is zero

C. The algebraic sum of the moments of any two forces about any point is equal to moment of their-resultant about the same point

D. Positive and negative couples can be balanced

Discussion

28. Which of the following is not a vector quantity

Mechanical Engineering Objective Questions { Engineering Mechanics }