Which of the following materials is most elastic_________________?

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

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 has no unit __________________?

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

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

The intensity of stress which causes unit strain is called_______________?

A. Unit stress
B. Bulk modulus
C. Modulus of rigidity
D. Modulus of elasticity

The Young’s modulus of a wire is defined as the stress which will increase the length of wire compared to its original length________________?

A. Half
B. Same amount
C. Double
D. One-fourth

Tensile strength of a material is obtained by dividing the maximum load during the test by the_________________?

A. Area at the time of fracture
B. Original cross-sectional area
C. Average of a. and b.
D. Minimum area after fracture

If the radius of wire stretched by a load is doubled, then its Young’s modulus will be_______________?

A. doubled
B. halved
C. become four times
D. become one-fourth

A thin mild steel wire is loaded by adding loads in equal increments till it breaks. The extensions noted with increasing loads will behave as under_________________?

A. Uniform throughout
B. Increase uniformly
C. First increase and then decrease
D. Increase uniformly first and then increase rapidly

The ultimate tensile stress of mild steel compared to ultimate compressive stress is__________________?

A. Same
B. More
C. Less
D. More or less depending on other factors