In the tensile test, the phenomenon of slow extension of the material, i. e. stress increasing with the time at a constant load is called_____________?

A. Creeping
B. Yielding
C. Breaking
D. Plasticity

In a tensile test, near the elastic limit zone, the______________?

A. Tensile strain increases more quickly
B. Tensile strain decreases more quickly
C. Tensile strain increases in proportion to the stress
D. Tensile strain decreases in proportion to the stress

The percentage reduction in area of a cast iron specimen during tensile test would be of the order of_________________?

A. more than 50%
B. 25—50%
C. 10—25%
D. 5—10%

The property of a material by virtue of which it can be beaten or rolled into plates is called _________________?

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

Poisson’s ratio is defined as the ratio of_________________?

A. Longitudinal stress and longitudinal strain
B. Longitudinal stress and lateral stress
C. Lateral stress and longitudinal stress
D. Lateral stress and lateral strain

The property of a material by virtue of which a body returns to its original, shape after removal of the load is called____________________?

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

The buckling load for a given material depends on___________________?

A. Slenderness ratio and area of cross-section
B. Posison’s ratio and modulus of elasticity
C. Slenderness ratio and modulus of elasticity
D. Slenderness ratio, area of cross-section and modulus of elasticity

The value of modulus of elasticity for mild steel is of the order of________________?

A. 2.1xl05 kg/cm2
B. 2.1 x 106 kg/cm2
C. 2.1 x 107 kg/cm2
D. 0.1 xlo6 kg/cm2 (<?) 3.8 x 106 kg/cm2

If a part is constrained to move and heated, it will develop ____________________?

A. Principal stress
B. Tensile stress
C. Compressive stress
D. Shear stress

Which is the false statement about true stress-strain method______________?

A. It does not exist
B. It is more sensitive to changes in both metallurgical and mechanical conditions
C. It gives, a more accurate picture of the ductility
D. It can be correlated with stress-strain values in other tests like torsion, impact, combined stress tests etc.