An element in a strained material is subjected to tensile stresses of 50 MPa and 100 MPa in two mutually perpendicular directions, with no shear stress. The major principal stress is:

A beam in pure bending is subjected to equal and opposite couples and no shear force. Which type of shear stress is zero?

The ratio of the maximum and minimum normal stresses is equal to _________ in the case of pure shear.

The ratio of plastic moment 'MP' of a member to the yield strength 'σy' of its material is called ____.