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

Related Mcqs:

1. Forces are called concurrent when their lines of action meet in_______________?

   A. one point
   B. two points
   C. plane
   D. perpendicular planes
   E. different planes

2. Forces are called coplanar when all of them acting on body lie in________________?

   A. one point
   B. one plane
   C. different planes
   D. perpendicular planes
   E. different points

3. 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

4. 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

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

   A. equal to the moment of the couple
   B. constant
   C. both of above are correct
   D. both of above are wrong
   E. none of the above

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 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

8. If a rigid body is in equilibrium under the action of three forces, then_______________?

   A. these forces are equal
   B. the lines of action of these forces meet in a point
   C. the lines of action of these forces are parallel
   D. B. and C. above
   E. none of the above

9. The angle which an inclined plane makes with the horizontal when a body placed on it is about to move down is known as angle of__________________?

   A. friction
   B. limiting friction
   C. repose
   D. kinematic friction
   E. static friction

10. 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