Hooke’s law holds good up to____________________?

A. Yield point
B. Limit of proportionality
C. Breaking point
D. Elastic limit

The unit of Young’s modulus is__________________?

A. Mm/mm
B. Kg/cm
C. Kg
D. Kg/cm2

It equal and opposite forces applied to a body tend to elongate it, the stress so produced is called______________________?

A. Internal resistanpe
B. Tensile stress
C. Transverse stress
D. Compressive stress

Modulus of rigidity is defined as the ratio of_________________?

A. Longitudinal stress and longitudinal strain
B. Volumetric stress and volumetric strain
C. Lateral stress and lateral strain
D. Shear stress and shear strain

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

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

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

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

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

The intensity of stress which causes unit strain is called_______________?

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