Related Mcqs:

1. 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

2. For steel, the ultimate strength in shear as compared to in tension is nearly _________________?

   A. same
   B. half
   C. one-third
   D. two-third
   E. one-fourth

3. The stress induced in a body due to suddenly applied load compared to when it is applied gradually is________________?

   A. same
   B. half
   C. two times
   D. four times
   E. none of the above

4. A boiler shell 200 cm diameter and plate thickness 1.5 cm is subjected to internal pressure of 1.5 MN/m , then the hoop stress will be_________________?

   A. 30 MN/m2
   B. 50 MN/m2
   C. 100 MN/m2
   D. 200 MN/m2
   E. 300 MN/m2

5. 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

6. 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

7. In a tensile test on mild steel specimen, the breaking stress as compared to ultimate tensile stress is_________________?

   A. more
   B. less
   C. same
   D. more/less depending on composition
   E. may have any value

8. 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

9. The safe twisting moment for a compound shaft is equal to the _________________?

   A. maximum calculated value
   B. minimum calculated value
   C. mean value
   D. extreme value
   E. none of the above

10. The torsional rigidity of a shaft is expressed by the_______________?

    A. maximum torque it can transmit
    B. number of cycles it undergoes before failure
    C. elastic limit up to which it resists torsion, shear and bending stresses
    D. torque required to produce a twist of one radian per unit length of shaft
    E. maximum power it can transmit at highest possible-speed