List of practice Questions

Which of the following mechanical properties of a material is most structure insensitive?
Decrease in stress at constant deformation under creep conditions is termed as the
Creep resistance can be improved by allowing the
The elastic strain energy of a unit length of an edge dislocation as compared to that of a screw dislocation is
The yield point phenomenon observed in annealed low carbon steel is due to the presence of the following element
True strain (\( \varepsilon \)) and engineering strain (\( e \)) are related by
Perfect plastic material is
The value of Poisson’s ratio of most of the metals is
Levy–Mises equations are valid for
Extensive plastic deformation occurs during
Metals with high monotonic strain-hardening exponents ($n > 0.15$) and those with a low strain-hardening exponent ($n < 0.15$) respectively would undergo
Deformation by slip occurs in
Magnetic permeability of iron is increased by:
Plastics as a material of construction suffer from the drawback of low:
Machinability of hard alloys and tool steels is improved by:
Copper is not present as an alloying constituent in:
In precipitation hardenable alloy, like duralumin, intermediate precipitates can form due to:
Vanadium in high speed steels:
Which of the following is not a point defect?
Minimum percent of nickel needed in stainless steel to stabilize the austenitic FCC phase is:
Cu–Be alloys are strengthened by:
Polystyrene belongs to:
Which of the following are the low molecular weight substances added to polymers to increase plasticity and flexibility?
Hard magnetic material is characterised by:
In a single component system, the maximum number of phases that can co-exist in equilibrium is: