Yield point in fatigue loading as compared to static loading is__________________?

Related Mcqs:

1. Stress concentration in static loading is more serious in__________________?

   A. ductile materials
   B. brittle materials
   C. equally serious in both cases
   D. depends on other factors
   E. unpredictable

2. Stress concentration in static loading is_________________?

   Which is correct statement ?

   A. very serious in brittle materials and less serious in ductile materials
   B. very serious in ductile materials and less serious in brittle materials
   C. equally serious in both types of materials
   D. seriousness would depend on other factors
   E. none of the above

3. The permissible stress for carbon steel under static loading is generally taken as__________________?

   A. 2000-3000 kg/pm2
   B. 3000-4000 kg/cm2
   C. 4000-4500 kg/cm2
   D. 7500-10,000 kg/cm2
   E. 10,000-15,000 kg/cm2

4. The maximum stress due to stress concentration in a bar having circular transverse hole, as compared to its static stress without hole will be_________________?

   A. same in both cases
   B. 2 times more
   C. 3 times more
   D. 4 times more
   E. unpredictable

5. 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

6. Which of the following is not correct procedure to increase the fatigue limit_______________?

   A. cold working
   B. shot peening
   C. surface decarburisation
   D. under-stressing
   E. all of the above

7. Fatigue strength can be increased by__________________?

   A. cold working
   B. shot peening
   C. grinding and lapping surface
   D. hot working
   E. using gradual changes of section

8. The fatigue life of a part can be improved by_____________________?

   A. electroplating
   B. polishing
   C. coating
   D. shot peening
   E. heat treating

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