Question: The stress necessary to initiate yielding is_________________?

• 1. considerably greater than that necessary to continue it
• 2. considerably lesser than that necessary to continue it
• 3. greater than that necessary to stop it
• 4. lesser than that necessary to stop it

Question: If a material expands freely due to heating it will develop ____________________?

• 1. thermal stresses
• 2. tensile stress
• 3. bending
• 4. no stress

Question: The change in the unit volume of a material under tension with increase in its Poisson’s ratio will ________________?

• 1. increase
• 2. decrease
• 3. remain same
• 4. increase initially and then decrease

Question: The property of a material which allows it to be drawn into a smaller section is called________________?

• 1. plasticity
• 2. ductility
• 3. elasticity
• 4. malleability

Question: The materials which exhibit the same elastic properties in all directions are called______________?

• 1. homogeneous
• 2. inelastic
• 3. isotropic
• 4. isentropic

Question: The total elongation produced in a bar of uniform section hanging vertically downwards due to its own weight is equal to that produced by a weight________________?

• 1. of same magnitude as that of bar and applied at the lower end
• 2. half the weight of bar applied at lower end
• 3. half of the square of weight of bar applied at lower end
• 4. one-fourth of weight of bar applied at lower end

Question: The value of Poisson’s ratio for steel is between_________________?

• 1. 0.01 to 0.1
• 2. 0.23 to 0.27
• 3. 0.25 to 0.33
• 4. 0.4 to 0.6

Question: Which of the following materials is most elastic_________________?

• 1. rubber
• 2. plastic
• 3. brass
• 4. steel

Question: In a tensile test on mild steel specimen, the breaking stress as compared to ultimate tensile stress is_________________?

• 1. more
• 2. less
• 3. same
• 4. more/less depending on composition

Question: Which of the following has no unit __________________?

• 1. kinematic viscosity
• 2. surface tension
• 3. bulk modulus
• 4. strain