Machine Design

A. metal strength by cycling
B. metal hardness by surface treatment
C. metal resistance to corrosion by coating
D. fatigue limit by overstressing the metal by successively increasing loadings
E. none of the above

A. 10°
B. 20°
C. 30°
D. 45°
E. 60°.

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

A. 40°
B. 122°
C. 136°
D. 152°
E. 161°.

A. straining
B. fatigue
C. creep
D. sudden loading
E. impact loading

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

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

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

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

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