Question

The principal stresses at a point are denoted as:

A) Tensile stress and Shear stress
B) Normal stress and Shear stress
C) Compressive stress and Shear stress
D) Longitudinal stress and Transverse stress

Answer 1

The principal stresses at a point are denoted as Normal stress and Shear stress. Normal stress includes tensile and compressive stress, whereas shear stress arises from forces applied tangentially to a material's surface.

Step-by-step explanation:

The principal stresses at a point are denoted as Normal stress and Shear stress, making the correct answer B) Normal stress and Shear stress. Principals stresses refer to the maximum and minimum values of normal stress on particular planes within a material, where shear stress is zero. These stresses typically occur when the material is subjected to loading. Normal stress can either be tensile stress, which occurs when forces stretch an object and cause elongation, or compressive stress, which is when forces contract an object and cause shortening. On the other hand, shear stress occurs when forces are applied tangentially to the surface of a material causing a shearing deformation.