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Section B: Solve all the questions. 1. The assumption in the theory of bending of beams, is : A. material is homogeneous B. material is isotropic c. Young's modulus is same in tension as well as in compression D. each layer is independent to expand or to contract E. all the above. 2. Stress may be defined as A. B. C. D. force per unit length force per unit volume force per unit area none of these. 3. A material is said to be perfectly elastic if A it regains its original shape on removal of the load B. It regains its original shape partially on removal of the load C. it does not regain its original shape at all D. none of these. 4. Beams composed of more than one material, rigidly connected together so as to behave as one piece, are known as A. B. c. D. Compound beams Indeterminate beams Determinate beams Composite beams. 5. The ratio of shear stress and shear strain of an elastic material, is A. B. C. D. E. Modulus of Rigidity Shear Modulus Young's Modulus Modulus of Elasticity both (a) and (b).