Q. Consider the following statements:

1. Two-dimensional stresses applied to a thin plater in its own plane represent the plane stress condition.

2. Normal and shear stresses may occur simultaneously on a plane.

3. Under plane stress condition, the strain in the direction perpendicular to the plane is zero.

Which of the above statements are correct?

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Q. If a material had a modulus of elasticity of 2.1 kgf/cm² and a modulus of rigidity of 0.8 kgf/cm² then what will be the approximate value of the Poissons ratio?

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Q. If E,G and K have their usual meanings, for an elastic material, then which one of the following be possibly true?

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Q. Youngs modulus of elasticity and Poissons ratio of a material are 1.25 x 10² MPa and 0.34 respectively. The modulus of rigidity of the material is __________

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Q. E, G, K and μ elastic modulus, shear modulus, bulk modulus and Poisson’s ratio respectively. To express the stress strain relations completely for this material, at least __________

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Q. A rod of length L and diameter D is subjected to a tensile load P. Which of the following is sufficient to calculate the resulting change in diameter?

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Q. The relationship between Youngs modulus E, bulk modulus K if the value of Poissons ratio is unity will be __________

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Q. What is the ratio of Youngs modulus E to shear modulus G in terms of Poissons ratio?

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Q. What is the relationship between modulus of elasticity and modulus of rigidity?

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Q. What is the limiting values of Poisson’s ratio?

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Q. What is the relationship between Youngs modulus E, modulus of rigidity C, and bulk modulus K?

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Q. What is the expression for modulus of rigidity in terms of modulus of elasticity and the Poissons ratio?

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Q. What will be the value of the Poisson’s ratio if the Youngs modulus E is equal to the bulk modulus K?

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Q. In an experiment, the bulk modulus of elasticity of a material is twice its modulus of rigidity. The Poissons ratio of the material is ___________

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Q. Calculate the modulus of resilience for a 2m long bar which extends 2mm under limiting axial stress of 200 N/mm²?

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Q. How can be the Poissons ratio be expressed in terms of bulk modulus(K) and modulus of rigidity(G)?

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Q. How many elastic constants of a non homogeneous, non isotropic material will be?

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Q. How many elastic constants of a linear, elastic, isotropic material will be?

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Q. Which of the following is true if the value of Poisson’s ratio is zero?

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Q. The modulus of rigidity and the modulus of elasticity of a material are 80 GPa and 200 GPa. What will be the Poissons ratio of the material?

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