Flow stress corresponds to___________________?

Related Mcqs:

1. 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

2. 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

3. 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

4. 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

5. In the tensile test, the phenomenon of slow extension of the material, i. e. stress increasing with the time at a constant load is called_____________?

   A. creeping
   B. yielding
   C. breaking
   D. plasticity
   E. none of the above

6. 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

7. Shear stress induced in a shaft subjected to tension will be__________________?

   A. maximum at periphery and zero at center
   B. maximum at center
   C. uniform throughout
   D. average value in center
   E. none of the above

8. 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

9. 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

10. The stress developed in a material at breaking point in extension is called__________?

    A. Breaking stress
    B. Fracture stress
    C. Yield point stress
    D. Proof stress

    Submitted by: Faheem Zaman Dhaunroo