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JSSC JE (ME) :QUIZ-9 || Stress and Strain
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Question 1
The slope of the stress-strain curve in the elastic deformation region is equal to
Question 2
Following diagram represents the stress strain curve for
Question 3
Which of the following is a dimensionless quantity?
Question 4
A cross-sectional b of area 700 mm2 is subjected to an axial load as shown in thefigure below. What is the value of stress (MPa) in the section PQ?
Question 5
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:-
Question 6
The elongation in a steel bar having a square cross section is 2.5 mm. If the bar is subjected to an axial compressive load of 250 kN. If the length of the bar is 4 m and modulus of elasticity is E=250 GPa. What is the dimension of the square cross section?
Question 7
Which formula CORRECTLY depicts the elongation in a composite body?
Question 8
What will be the value of Poisson’s ratio, if the elasticity and rigidity of the material is 200 GPa and 66.67 GPa?
Question 9
A rod with a length of 100 cm and diameter of 4 mm undergoes an axial pull of 50 kN. What is the stress (in N/mm2)?
Question 10
If length of bar is 10 mm and thermal stress is σ1. If length of bar is changes to 20 mm and corresponding thermal stress is σ2 then be
(∝ = 12 × 10-6°C, T = 25°C, E = 210 GPa)
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