The unit of Young’s modulus is__________________?

Related Mcqs:

1. Young’s modulus is defined as the ratio of ___________________?

   A. volumetric stress and volumetric strain
   B. lateral stress and lateral strain
   C. longitudinal stress and longitudinal strain
   D. shear stress to shear strain
   E. longitudinal stress and lateral strain

2. The Young’s modulus of a wire is defined as the stress which will increase the length of wire compared to its original length________________?

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

3. If the radius of wire stretched by a load is doubled, then its Young’s modulus will be_______________?

   A. doubled
   B. halved
   C. become four times
   D. become one-fourth
   E. remain unaffected

4. The value of modulus of elasticity for mild steel is of the order of________________?

   A. 2.1xl05 kg/cm2
   B. 2.1 X 106 kg/cm2
   C. 2.1 x 107 kg/cm2
   D. 0.1 xlO6 kg/cm2 (<?) 3.8 x 106 kg/cm2

5. Modulus of rigidity is defined as the ratio of_________________?

   A. longitudinal stress and longitudinal strain
   B. volumetric stress and volumetric strain
   C. lateral stress and lateral strain
   D. shear stress and shear strain
   E. linear stress and lateral strain

6. 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

7. 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°.

8. Longitudinal stress in a thin cylinder is__________________?

   A. equal to the hoop stress
   B. twice the hoop stress
   C. half of the hoop stress
   D. one-fourth of hoop stress
   E. four times the hoop stress

9. 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

10. The change in the unit volume of a material under tension with increase in its Poisson’s ratio will ________________?

    A. increase
    B. decrease
    C. remain same
    D. increase initially and then decrease
    E. unpredictable