For steel, the ultimate strength in shear as compared to in tension is nearly _________________?

A. Same
B. Half
C. One-third
D. Two-third

True stress-strain curve for materials is plotted between__________________?

A. Load/original cross-sectional area and change in length/original length
B. Load/instantaneous cross-sectional area original area and log
C. Load/instantaneous cross-sectional area and change in length/original length
D. Load/instantaneous area and instantaneous area/original area

Percentage reduction of area in performing tensile test on cast iron may be of the order of__________________?

A. 50%
B. 25%
C. 0%
D. 15%

The impact strength of a material is an index of its ___________________?

A. Toughness
B. Tensile strength
C. Capability of being cold worked
D. Hardness

Strain is defined as the ratio of__________________?

A. Change in volume to original volume
B. Change in length to original length
C. Change in cross-sectional area to original cross-sectional area
D. Any one of the above

The materials having same elastic properties in all directions are called________________?

A. Ideal materials
B. Uniform materials
C. Isotropic materials
D. Paractical materials

Deformation per unit length in the direction of force is known as_________________?

A. Strain
B. Lateral strain
C. Linear strain
D. Linear stress

Young’s modulus is defined as the ratio of ___________________?

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

In a vapor compression cycle, the refrigerant immediately after expansion valve is___________________?

A. Liquid
B. Sub-cooled liquid
C. Saturated liquid
D. Wet vapour

Absorption system normally uses the following refrigerant___________________?

A. freon-11
B. freon-22
C. c02
D. s02