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

Related Mcqs:

1. If a load W is applied instantaneously on a bar; then the stress induced in bar will___________________?

   A. be independent of ratio of mass of load W to mass of bar (y)
   B. increase with increase in y
   C. decrease with decrease in y
   D. depend on other considerations
   E. none of the above

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. 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

4. If d is the diameter of bolt hole then for a flanged pipe joint to be leak proof, the circumferential pitch of the bolts should be_________________?

   A. lOVZ
   B. 10VZtol5Vd
   C. 15Vdto20VZ
   D. 20Vdto30Vd
   E. 30V5″to40Vd

5. 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

6. 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

7. 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

8. 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

9. Transverse fillet welded joints are designed for________________?

   A. tensile strength
   B. compressive strength
   C. shear strength
   D. bending strength
   E. torsional strength

10. 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