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31.

The elasticity of various materials is controlled by its                        
A. ultimate tensile stress B. proof stress
C. stress at yield point D. stress at elastic limit



32.

The energy absorbed in a body, when it is strained within the elastic limits, is known as                        
A. strain energy B. resilience
C. proof resilience D. modulus of resilience



33.

The force acting along the circumference will cause stress in the walls in a direction normal to the longitudinal axis of cylinder; this stress is called                        
A. longitudinal stress B. hoop stress
C. yeiled stress D. ultimate stress




34.

The impact strength of a material is an index of its                        
A. toughness B. tensile strength
C. capability of being cold worked D. hardness



35.

The intensity of stress which causes unit strain is called                        
A. unit stress B. bulk modulus
C. modulus of rigidity D. modulus of elasticity



36.

The materials which exhibit the same elastic properties in all directions are called                        
A. homogeneous B. inelastic
C. isotropic D. isotropic



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