Strength of Materials Practice Test 1

1. A tensile test was conducted on a mild steel bar. The diameter and the gauge length of bat was 3cm and 20cm respectively. The extension was 0.21mm. What is the value to strain?

2. A beam is said to be of uniform strength, if ____________

3. Which type of stress does in a reinforcement bar is taken by the concrete?

4. What will be the unit of compressive stress?

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

6. The materials which have the same elastic properties in all directions are called __________

7. The bending stress is ____________

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

9. Some structural members subjected to a long time sustained loads deform progressively with time especially at elevated temperatures. What is such a phenomenon called?

10. 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 __________