For the following questions answer them individually
The outside diameter of a hollow shaft is twice it's inside diameter. The ratio of its torque carrying capacity to that of a solid shaft of the same material and the same outside diameter is _____
A solid shaft can resist a bending moment of 3 kNm and a twisting moment of 4 kNm together, then the maximum torque that can be applied is _____.
The shear stress distribution over a rectangular cross-section of a beam follows _____.
When two mutually perpendicular principal stresses are unequal but alike, the maximum shear stress is represented by _____.