Machine Design

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

A. acts when external load is applied
B. becomes zero when external load is removed
C. is independent of external loads
D. is always harmful
E. is always beneficial

A. increases the fatigue strength
B. decreases the fatigue strength
C. has no influence on fatigue strength
D. alone has no influence on fatigue strength
E. none of the above

A. surface
B. just below the surface
C. within the core
D. could occur anywhere
E. none of the above

A. finishing and polishing
B. shot-peening
C. decarburisation
D. electroplating
E. all of the above”.

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

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

A. is greatly decreased by poor surface conditions
B. remains same irrespective of surface conditions
C. depends mainly on core composition
D. is dependent upon yield strength of material
E. none of the above

A. 1 : l
B. 2:1
C. 3 : 2
D. 2 : 3
E. 1 : 2

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