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GATE 2020: Strength of Material Quiz 2
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Question 1
The stress is proportional to strain upto the proportional limit, which is the law indicating that?
Question 2
If the radius of wire stretched by a load doubled, then its Young’s modulus will
Question 3
A metal rod of initial length Lo is subjected to a drawing process. The length of the rod at any instant is given by the expression, L(t)= Lo (1+t2) , where t is the time in minutes. The true strain rate (in min-1) at the end of one minute is ________.
Question 4
If a tensile test is done on brass item which is 20 mm in diameter having gage length of 100 mm and a tensile load T of 100 kN is applied, the gage marks distance increases by 2.345 mm. What will be the Poisson’s ratio when diameter of brass item decreases by 0.11 mm?
Question 5
The state of stress at a point ‘P’ in a two dimensional loading is such that the Mohr’s circle is a point located at 175 MPa on the positive normal stress axis.
Determine the maximum and minimum principal stresses respectively from the Mohr’s circle
Question 6
The state of stress at a point in a body is given by =100 MPa and =200 MPa. One of the principal stresses σ₁=250 MPa .The magnitudes of the other principal stress and the shearing stress are respectively
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