1ST STREMA QUIZ BEE - DIFFICULT ROUND

Maximum shear stress developed on the surface of a solid circular shaft under pure torsion is 240 MPa. If the shaft diameter is doubled, then the maximum shear stress developed corresponding to the same torque will be___.

The ratio of the maximum shear in a open coiled to close coiled helical spring of same mean coil diameter and wire diameter under same axial load is _______?

The A992 steel rod is subjected to the loading shown. If the cross-sectional area of the rod is 60mm^2 , determine the displacement of A, Neglect the size of the couplings at B, C, and D

An L2 steel strap having a thickness of 0.125 in. and a width of 2 in. is bent into a circular arc of radius 600 in. Determine the maximum bending stress in the strap.

Determine the maximum bending moment of the given figure in kN-m.

Determine the maximum deflection of the solid circular shaft. The shaft is made of steel having E = 200 GPa. It has a diameter of 100 mm.

If P1​ = 50kip and P2 = 150 kips. determine the vertical displacement of end A of the high strength precast concrete column.

The moment of inertia of a beam section 50 cm deep is 69490cm^4. Find the longest span over which a beam of this section, when simply supported, could carry a uniformly distributed load of 50 kN per meter run. The maximum flange stress in the material is not exceed 110 N/mm^2.

A thin steel ring (tyre) is shrunk on a rigid wooden wheel 1.2m in diameter. if the stress in the steel tyre is limited to 120 MN/m², determine the minimum internal diameter of the tyre. For the tyre material E = 200 GN/m² and α = 12 x 10^-6 per  ͦ C.

A rectangular section is replaced by an I-section of same area. Compare the flexural strengths (resistance to bending) for the two sections. It may be presumed that material is same for the two sections and is able to take same maximum bending stress.