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GATE 2019 Strength of Materials Day 1 Quiz

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Question 1

In the engineering stress-strain curve for mild steel, the Ultimate Tensile Strength (UTS) refers to

Question 2

A prismatic bar is suspended under its own weight and the deflection due to its own weight is given as 3 mm. Now considering the bar as weightless, if the prismatic bar is suspended with a load equal to its own weight then under this condition what would be deflection of the bar.

Question 3

A 200 × 100 × 50 mm steel block is subjected to a hydrostatic pressure of 15 MPa. The Young’s modulus and Poisson’s ratio of the material are 200 GPa and 0.3 respectively. The change in the volume of the block in mm ³ is

Question 4

A rod of length L having uniform cross-sectional area A is subjected to a tensile force P as shown in the figure below. If the Young’s modulus of the material varies linearly from E1 to E2 along the length of the rod, the normal stress developed at the section-SS is

Question 5

A rigid beam AB is supported as shown in figure. The rod AM is of steel, with a cross-sectional area of 10 cm2, the rod BN is of wood with a cross-sectional area of 100 cm2, the rod CD is of copper, and has cross-sectional area of 30 cm2. The displacement of the point of application of the load is
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Question 6

Two similar round bars A and B are each 30 cm long as shown in Figure.

The ratio of the energies stored by the bars A and B  is
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Jan 25ESE & GATE CE