Two cubical castings of the same metal and sizes of $$2cm$$ side and $$4cm$$ side are moulded in green sand. If the smaller casting solidifies in $$2mins,$$ the expected time of solidifications of larger casting will be

For a simply supporting beam on two end supports the Bending Moment is maximum:

A cylindrical elastic body subjected to pure torsion about its axis develops:

An elastic body is subjected to a tensile stress $$X$$ in a particular direction and a compressive stress $$Y$$ in its perpendicular direction. $$X$$ and $$Y$$ are unequal in magnitude. On the plane of maximum shear stress in the body there will be: