A material may fail if______________?

Related Mcqs:

1. Maximum strain theory for the failure of a material at the elastic limit, is known as_______________?

   A. Guest’s or Trecas’ theory
   B. St. Venant’s theory
   C. Rankine’s theory
   D. Haig’s theory

2. If E, N, K and 1/m are modulus of elasticity, modulus of rigidity. Bulk modulus and Poisson ratio of the material, the following relationship holds good_______________?

   A. E = 3K (1 – 2/m)
   B. E = 2N (1 + 1/m)
   C. (3/2)K (1 – 2/m) = N (1 + 1/m)
   D. All the above

3. The ratio of lateral strain to axial strain of a homogeneous material, is known___________________?

   A. Yield ratio
   B. Hooke’s ratio
   C. Poisson’s ratio
   D. Plastic ratio

4. A cantilever of length 2 cm and depth 10 cm tapers in plan from a width 24 cm to zero at its free end. If the modulus of elasticity of the material is 0.2 × 106 N/mm2, the deflection of the free end, is________________?

   A. 2 mm
   B. 3 mm
   C. 4 mm
   D. 5 mm

5. Total strain energy theory for the failure of a material at elastic limit, is known_________________?

   A. Guest’s or Trecas’ theory
   B. St. Venant’s theory
   C. Rankine’s theory
   D. Haig’s theory

6. The ratio of shear stress and shear strain of an elastic material, is________________?

   A. Modulus of Rigidity
   B. Shear Modulus
   C. Modulus of Elasticity
   D. Both A. and B

7. Beams composed of more than one material, rigidly connected together so as to behave as one piece, are known as________________?

   A. Compound beams
   B. Indeterminate beams
   C. Determinate beams
   D. Composite beams

8. Shear strain energy theory for the failure of a material at elastic limit, is due to_________________?

   A. Rankine
   B. Guest or Trecas
   C. St. Venant
   D. Von Mises

9. 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

10. A road of uniform cross-section A and length L force P. The Young’s Modulus E of the material, is_________________?

    A. E = /A. L
    B. E =/P. L
    C. E = P. L/
    D. E = P. A/