Stress concentration in static loading is_________________?

Related Mcqs:

1. 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

2. 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

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

   A. same
   B. higher
   C. lower
   D. depends on other factors
   E. none of the above

4. 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

5. Stress concentration in cyclic 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

6. Stress concentration in cyclic loading is more serious in__________________?

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

7. Stress concentration is caused due to_____________________?

   A. variation in properties of material from point to point in a member
   B. pitting at’points or areas at which loads on a member are applied
   C. abrupt change of section
   D. all of the above
   E. none of the above

8. If shearing stress in nut is half the tensile stress in a bolt, then nut length should be equal to___________________?

   A. diameter of bolt
   B. 0.75 x diameter of bolt
   C. 1.25 x diameter of bolt
   D. 1.5 x diameter of bolt
   E. 0.5 x diameter of bolt

9. 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

10. The connecting rod bolts are tightened up so that tightening stress _________________?

    A. is just sufficient to hold parts together
    B. approaches yield point
    C. is 50% of yield point
    D. is about yield point divided by safety factor
    E. none of the above