SSC JE Mechanical Engineering 24th Jan 2018 Shift-2

Instructions

For the following questions answer them individually

SSC JE Mechanical Engineering 24th Jan 2018 Shift-2 - Question 121


The following columns have same material, height and weight, which column can support maximum weight?

SSC JE Mechanical Engineering 24th Jan 2018 Shift-2 - Question 122


A column of length 8m with both ends fixed may be considered as equivalent to a column of length ________with both ends hinged.

SSC JE Mechanical Engineering 24th Jan 2018 Shift-2 - Question 123


When a steel column is said to be short, the slenderness ratio is?

SSC JE Mechanical Engineering 24th Jan 2018 Shift-2 - Question 124


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.?

SSC JE Mechanical Engineering 24th Jan 2018 Shift-2 - Question 125


What is the change in Euler’s buckling load, if the diameter of the column is reduced by 10%?

SSC JE Mechanical Engineering 24th Jan 2018 Shift-2 - Question 126


Which equation correctly relates the modulus of elasticity in terms of G and K?

SSC JE Mechanical Engineering 24th Jan 2018 Shift-2 - Question 127


Which of the curve is best suited for linear elastic-perfectly plastic material?

SSC JE Mechanical Engineering 24th Jan 2018 Shift-2 - Question 128


Which formula correctly depicts the elongation in a tapered rod?

SSC JE Mechanical Engineering 24th Jan 2018 Shift-2 - Question 129


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 ..............

SSC JE Mechanical Engineering 24th Jan 2018 Shift-2 - Question 130


Which of the following statement is TRUE for sudden loading?

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