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

Related Mcqs:

1. 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

2. 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

3. The necessary condition for forces to be in equilibrium is that these should be_____________________?

   A. coplanar
   B. meet at one point ;
   C. both A. and B. above
   D. all be equal
   E. something else

4. 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

5. It equal and opposite forces applied to a body tend to elongate it, the stress so produced is called______________________?

   A. internal resistanpe
   B. tensile stress
   C. transverse stress
   D. compressive stress
   E. working stress

6. The ratio of direct stress to volumetric strain in case of a body subjected to three mutually perpendicular stresses of equal intensity, is equal to___________________?

   A. Young’s modulus
   B. bulk modulus
   C. modulus of rigidity
   D. modulus of elasticity
   E. Poisson’s ratio

7. The deformation of a bar under its own weight compared to the deformation of same body subjected to a direct load equal to weight of the body is_______________?

   A. same
   B. double
   C. half
   D. four times
   E. one-fourth

8. The force acting along the circumference will cause stress in the walls in a direction normal to the longitudinal axis of cylinder; this stress is called___________________?

   A. longitudinal stress
   B. hoop stress
   C. yeiled stress
   D. ultimate stress
   E. none of the above

9. 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

10. A key is subjected to side pressure as well at shearing forces. These pressures are called_________________?

    A. bearing stresses
    B. fatigue stresses
    C. crushing stresses
    D. resultant stresses
    E. none of the above