The elasticity of various materials is controlled by its___________________?

A. Ultimate tensile stress
B. Proof stress
C. Stress at yield point
D. Stress at elastic limit

The stress developed in a material at breaking point in extension is called_________________?

A. Breaking stress
B. Fracture stress
C. Yield point stress
D. Ultimate tensile stress

The stress necessary to initiate yielding is_________________?

A. Considerably greater than that necessary to continue it
B. Considerably lesser than that necessary to continue it
C. Greater than that necessary to stop it
D. Lesser than that necessary to stop it

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

A. thermal stresses
B. tensile stress
C. bending
D. compressive stress

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

A. Increase
B. Decrease
C. Remain same
D. Increase initially and then decrease

For which material the Poisson’s ratio is more than unity_________________?

A. steel
B. copper
C. aluminium
D. cast iron

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

A. Plasticity
B. Ductility
C. Elasticity
D. Malleability

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

A. Homogeneous
B. Inelastic
C. Isotropic
D. Isentropic

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________________?

A. Of same magnitude as that of bar and applied at the lower end
B. Half the weight of bar applied at lower end
C. Half of the square of weight of bar applied at lower end
D. One-fourth of weight of bar applied at lower end

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

A. 0.01 to 0.1
B. 0.23 to 0.27
C. 0.25 to 0.33
D. 0.4 to 0.6