Final answer:
True. A positive normal strain is indeed referred to as tensile strain.
Step-by-step explanation:
True. A positive normal strain is referred to as a tensile strain. Tensile strain is the measure of the deformation of an object under tensile stress and is defined as the fractional change in the object's length when the object experiences tensile stress. It represents the elongation of the material and the length change (ΔL) is positive. Conversely, compressive strain occurs when there is a reduction in length of the material and ΔL is negative. The normal strain refers to the strain that occurs perpendicular to the cross-section due to the stress applied in the same direction.