SSC JE Mechanical Engineering 25th Jan 2018 Shift-2
For the following questions answer them individually
The Young’s modulus and thermal stress developed in a steel rod of diametre 2 cm and length 2 m is 200 GPa and 288 MPa respectively, This experiences heating from temperature $$30^\circ C$$ to $$150^\circ C$$ and the rod has been restricted in its original position. Calculate the value of coefficient of thermal expansion.
Which of the following column has the formulafor the Euler's buckling load as $$\frac{\pi^2 El}{L^2}$$
If the maximum value of the bending moment in the simply supported beam is 6.75 kNm and the diameter of the beam is 75 mm. Calculate the maximum value of bending stress (MPa).
The value of the principal stress at a point in a plane stressed element is $$\sigma_x = \sigma_y = 500$$MPa. Calaulate the value of normal stress acting (MPa)at the angle of $$45^\circ$$ at X axis.
Choose the CORRECT equation for the acceleration in terms of distance (s) and velocity (v).
Choose the CORRECT graph for the motion of an object moving with the linearly increasing acceleration with respect to time.
The maximum value of bending momentin the simply supported beam with a concentrated load P at its mid span is ...............
The fatigue strength of the metallic material can be increased by which of the following features?
The formula for the extension in the tapered rod of length l and tapered diametre of $$D_1$$, and $$D_2$$, under the axial tensile load is ............
