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19.

Longitudinal stress in a thin cylinder is                        
A. equal to the hoop stress B. twice the hoop stress
C. half of the hoop stress D. one-fourth of hoop stress



20.

Percentage reduction of area in performing tensile test on cast iron may be of the order of                        
A. 50% B. 25%
C. 0% D. 15%



21.

Poisson's ratio is defined as the ratio of                        
A. longitudinal stress and longitudinal strain B. longitudinal stress and lateral stress
C. lateral stress and longitudinal stress D. lateral stress and lateral strain




22.

Proofresilience per material is known as                        
A. resilience B. proof resilience
C. modulus of resilience D. toughness



23.

Resilience of a material is considered when it is subjected to                        
A. frequent heat treatment B. fatigue
C. creep D. shock loading



24.

Rivets are made of following type of material                        
A. tough B. hard
C. resilient D. ductile



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