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

Related Mcqs:

1. Isothermal compression efficiency, even when running at high speed, can be approached by using A. multi-stage compression B. cold water spray C. both A. and B. above D. fully insulating the cylinder E. high stroke_________________?

   Isothermal compression efficiency, even when running at high speed, can be approached by using
   A. multi-stage compression
   B. cold water spray
   C. both A. and B. above
   D. fully insulating the cylinder
   E. high stroke

2. 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

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

   A. creep
   B. fatigue
   C. endurance
   D. plastic deformation
   E. non-plastic deformation

4. 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

5. 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

6. Maximum energy loss in a boiler occurs due to _______________________?

   A. unburnt carbon in ash
   B. incomplete combustion
   C. ash content
   D. flue gases
   E. radiation losses

7. In compression, a prism of brittle material will break________________?

   A. by forming a bulge (l>) by shearing along oblique plane
   B. in direction perpendicular to application of load
   C. by crushing into thousands of pieces
   D. none of the above

8. Dimensions of surface tension are___________________?

   A. MlL°T2
   B. MlL°Tx
   C. MlL r2
   D. MlL2T2
   E. MlL°t

9. Units of surface tension are____________________?

   A. energy/unit area
   B. distance
   C. both of the above
   D. it has no units
   E. none of the above

10. Maximum work is done in compressing air when the compression is_________________?

    A. isothermal
    B. adiabatic
    C. polytropic
    D. any one of the above
    E. none of the above