Q1: Yield strength of a material is determined by the __________ test.

ANS:B - tension

The yield strength of a material is typically determined by the tension test. In a tension test, a sample of the material is subjected to tensile (pulling) forces until it deforms or fractures. During the test, the stress-strain behavior of the material is observed, and important mechanical properties such as yield strength, ultimate tensile strength, and elongation can be determined. The yield strength is the stress at which the material begins to deform plastically, meaning it undergoes permanent deformation without further increase in load. This point is typically identified on the stress-strain curve during the tension test, where there is a significant deviation from the linear elastic behavior of the material. Therefore, the tension test is commonly used to determine the yield strength of a material, providing valuable information about its mechanical properties and suitability for various applications.