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

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. 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

3. The value of shear stress which is induced in the shaft due to the applied couple varies____________________?

   A. from maximum at the center to zero at the circumference
   B. from zero at the center to maximum at the circumference
   C. from maximum at the center to mini-mum at the cricumference
   D. from minimum at the centro to maxi-mum at the circumference
   E. none of the above

4. 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

5. 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

6. 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

7. 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

8. 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

9. A projectile is fired at an angle 9 to the vertical. Its horizontal range will be maximum when 9 is__________________?

   A. 0°
   B. 30°
   C. 45°
   D. 60°
   E. 90°.

10. The ultimate tensile stress of mild steel compared to ultimate compressive stress is__________________?

    A. same
    B. more
    C. less
    D. more or less depending on other factors
    E. unpredictable