Material Science Mechanical previous year questions with answer
Ques 11 GATE 2016 SET-1
A hypothetical engineering stress-strain curve shown in the figure has three straight lines PQ, QR, RS with coordinates P(0,0), Q(0.2, 100), R(0.6, 140) and S(0.8, 130). 'Q' is the yield point, 'R' is the UTS point and 'S' the fracture point.
0.85 is the correct answer.
Ques 12 GATE 2015 SET-2
The atomic packing factor for a material with body centered cubic structure is ________.
0.68 is the correct answer.
Ques 13 GATE 2015 SET-1
Which one of the following types of stress-strain relationship best describes the behaviour of brittle materials, such as ceramics and thermosetting plastics, (σ = stress and ε = strain)?
Ques 14 GATE 2014 Set-1
The process of reheating the martensitic steel to reduce its brittleness without any significant loss in its hardness is
Ques 15 GATE 2014 Set-1
A metal rod of initial length L0 is subjected to a drawing process. The length of the rod at any instant is given by the expression, L(t) = L0(1 + t2), where t is the time in minutes. The true strain rate (in min-1) at the end of one minute is _______
0.9 to 1.1 is the correct answer.
Ques 16 GATE 2013 SET-4
For a ductile material, toughness is a measure of
Ques 17 GATE 2013 SET-3
For a ductile material, toughness is a measure of