Related Mcqs:

1. The ratio of endurance limit in shear to the endurance limit in flexure is__________________________?

   A. 0.33
   B. 0.4
   C. 0.5
   D. 0.55
   E. 0.6

2. The endurance limit in shear of carbon steel can be obtained by multiplying the endurance limit in flexure by a factor of____________?

   A. 0.25
   B. 0.45
   C. 0.55
   D. 0.65
   E. 0.75

3. 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

4. The endurance limit of a material with finished surface in comparison to rough surface is_________________?

   A. more
   B. less
   C. same
   D. more or less depending on quantum of load
   E. unpredictable

5. For steel, the ultimate strength in shear as compared to ultimate strength in tension is ___________________?

   A. same
   B. 1/2
   C. 1/3
   D. 1/4
   E. 2/3

6. 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

7. 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

8. The building up of worn and uridersized parts, subjected to repeated loads by electroplating is_____________________?

   A. best method
   B. extremely hazardous
   C. has no effect as regards fatigue strength
   D. cheapest method
   E. all of the above

9. 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

10. 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