Slow plastic defomiation of metals under a constant stress is known as________________?

Related Mcqs:

1. The loss of strength in compression with simultaneous gain in strength in tension due to overloading is known as________________?

   A. hysteresis B. creep C. visco elasticity D. Boeschinger effect E. inelasticity...

2. The ignition of charge by some hot surface in the engine cylinder before operation of spark plug is known as________________?

   A. auto ignition B. preignition C. retarded ignition D. accelerated ignition E. detonation...

3. The flow in which the velocity vector is identical in magnitude and direction at every point, for any given instant, is known as________________?

   A. one dimensional flow B. uniform flow C. steady flow D. turbulent flow E. streamline flow...

4. The normal stress in a fluid will be constant in all directions at a point only if__________________________?

   A. it is incompressible B. it has uniform viscosity C. it has zero viscosity D. it is frictionless E. it is at rest...

5. The ultimate tensile strength and yield strength of most of the metals, when temperature falls from 0 to l00°C will _________________?

   A. increase B. decrease C. remain same D. first increase and then decrease E. show unpredictable behaviour...

6. Super conduction by metals is observed in the temperature range of_________________?

   A. below 10°K B. above 100°K C. around 0°C D. around 100°C E. above 1000°C...

7. Which one of the following metals would work-harden more quickly than the others__________________?

   A. copper B. brass C. lead D. silver E. aluminium...

8. At the center line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be_________________?

   A. minimum B. maximum C. zero D. negative value E. could be any value...

9. The property of a fluid which enables it to resist tensile stress is known as___________________?

   A. compressibility B. surface tension C. cohesion D. adhesion E. viscosity...

10. Reheating of steam under ideal conditions takes place at constant __________________?

    A. entropy B. enthaply C. pressure D. temperature E. all of the above...