SSC JE Mechanical Engineering 24th Jan 2018 Shift-2
For the following questions answer them individually
The following columns have same material, height and weight, which column can support maximum weight?
A column of length 8m with both ends fixed may be considered as equivalent to a column of length ________with both ends hinged.
What is the tensile stress (in MPa) in a rod of cross section 20 mm x 30 mm, carrying an axial tensile load of 20 kN.?
What is the change in Euler’s buckling load, if the diameter of the column is reduced by 10%?
A steel rod whose diameter is 6 cm and is 1 m long, experiences heating from temperature $$40^\circ C$$ to $$200^\circ C$$. The coefficient of thermal expansion is $$\alpha = 12 \times 10^{-8} / ^\circ C$$ and Young's modulus is 300 GPa. If the rod has not been restricted in its original position, the thermal stress (MPa) developed is ..............
