Related Mcqs:

1. The property of a material which enables it to resist fracture due to high impact loads is known as__________________?

   A. elasticity
   B. endurance
   C. strength
   D. toughness
   E. resilience

2. If an unsupported uniform cross sectional elastic bar is subjected to a longitudinal impact from a rigid bob moving with velocity v, then a compressive wave of intensity sc is propagated through the bar as follows______________________?

   A. vpE
   B. vVvF
   C. WpE/2
   D. IvHpE
   E. none of the above, where E = modulus of elasticity and p = mass density

3. Resilience of a material is important, when it is subjected to________________?

   A. combined loading
   B. fatigue
   C. thermal stresses
   D. wear and tear
   E. shock loading

4. Endurance limit or fatigue limit is the maximum stress that a member can withstand for an infinite number of load applications without failure when subjected to________________?

   A. dynamic loading
   B. static loading
   C. combined static and dynamic loading
   D. completely reversed loading
   E. all of the above

5. In testing a material for endurance strength, it is subjected to_______________________?

   A. static load
   B. dynamic load
   C. impact load
   D. static as well as dynamic load
   E. completely reversed load

6. When a nut is tightened by plaping a washer below it, the bolt will be subjected to following type of loads___________________?

   A. compression
   B. tension
   C. shear
   D. combined loads
   E. all of the above

7. When a close coiled helical spring is compressed, its wire is subjected to________________?

   A. tension
   B. shear
   C. compression
   D. all of the above
   E. none of the above

8. When a bolt is subjected to shock loading, the resilience of the bolt should be considered in order to prevent breakage at_______________?

   A. shank
   B. head
   C. in the middle
   D. at the thread
   E. anywhere in the bolt

9. Which process will increase the fatigue duration of parts ?

   A. finishing and polishing
   B. shot-peening
   C. decarburisation
   D. electroplating
   E. all of the above”.

10. In nitrated parts, the origins of the fatigue cracks will occur at__________________?

    A. surface
    B. just below the surface
    C. within the core
    D. could occur anywhere
    E. none of the above