During a tensile test on a specimen of 1 cm cross-section, maximum load observed was 8 tonnes and area of cross-section at neck was 0.5 cm2. Ultimate tensile strength of specimen is___________________?

A. 4 tonnes/cm2
B. 8 tonnes/cm2
C. 16 tonnes/cm2
D. 22 tonnes/cm2

Which of the following has no unit __________________?

A. Kinematic viscosity
B. Surface tension
C. Bulk modulus
D. Strain

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

A. More
B. Less
C. Same
D. More/less depending on composition

Which of the following materials is most elastic_________________?

A. Rubber
B. Plastic
C. Brass
D. Steel

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

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

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

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

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

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

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