The algebraic sum of moments of the forces forming couple about any point in their plane is________________?

Related Mcqs:

1. 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. independence of forces
   C. dependence of forces
   D. balance of force
   E. resolution of forces

2. The product of either force of couple with the arm of the couple is called________________?

   A. resultant couple
   B. moment of the forces
   C. resulting couple
   D. moment of the couple
   E. none of the above

3. A single force and a couple acting in the same plane upon a rigid body________________?

   A. balance each other
   B. cannot balance each other
   C. produce moment of a couple
   D. are equivalent
   E. none of the above

4. Least force required to draw a body up the inclined plane is W sin (plane inclination + friction angle) applied in the direction__________________?

   A. along the plane
   B. horizontally
   C. vertically
   D. at an angle equal to the angle of friction to the inclined plane
   E. unpredictable

5. A body of weight W on inclined plane of a being pulled up by a horizontal force P will be on the point of motion up the plane when P is equal to___________________?

   A. W
   B. W sin (a + $)
   C. Wtan(a + <|))
   D. Wan(a-)
   E. Wtana

6. If three forces acting in one plane upon a rigid body, keep it in equilibrium, then they must either__________________?

   A. meet in a point
   B. be all parallel
   C. at least two of them must meet
   D. all the above are correct
   E. none of the above

7. The forces, which meet at one point, but their lines of action do not lie in a plane, are called______________?

   A. coplanar non-concurrent forces
   B. non-coplanar concurrent forces
   C. non-coplanar non-concurrent forces
   D. intersecting forces
   E. none of the above

8. The magnitude of two forces, which when acting at right angle produce resultant force of VlOkg and when acting at 60° produce resultant of Vl3 kg. These forces are____________________?

   A. 2 and V6
   B. 3 and 1 kg
   C. V5andV5
   D. 2 and 5
   E. none of the above

9. The centre of percussion of a solid cylinder of radius r resting on a horizontal plane will be______________?

   A. r/2
   B. 2r/3
   C. r/A
   D. 3r/2
   E. 3r/A

10. The C.G. of a plane lamina will not be at its geometrical centre in the case of a______________?

    A. right angled triangle
    B. equilateral triangle
    C. square
    D. circle
    E. rectangle