railway RRB JE (CBT I + CBT II) Mock Test 2024 Strength of Materials Shear Stress and Bending Stress
The following beam sections are subjected to bending with load acting from the top. (i) Rectangular beam (width b = 200 mm and depth d = 400 mm) with load acting on top face of width b (ii) a symmetrical I section (flange 250 mm × 20mm, and web 460 mm × 20 mm) with flange on top and load acting on the flange face. The intensity of shear stress due to bending will be maximum for the sections as:
1
At a distance of 0.5 d from the top face for the rectangular beam; at a point on the web (at a distance of 250 mm from the flange top) for the I section
2
At the top face (d = 0) for the rectangular beam; at top face of flange for the I section
3
At a distance of 0.25 d from the top face for the rectangular beam; at the junction of the web and bottom flange (at a distance of 20 mm above the bottom face of flange) for the I section
4
At a distance of 0.5 d from the top face for the rectangular beam; at the junction of the web and the top flange (at a distance of 20 mm below the flange top) for the I section