Tufropes Quality Assurance Interview Questions and Answers

A stress-strain diagram shows the relationship between stress and strain in a material.

• Stress is plotted on the y-axis and strain on the x-axis.

• The diagram typically shows a linear relationship between stress and strain up to a certain point, known as the elastic limit.

• Beyond the elastic limit, the material may exhibit plastic deformation and the curve becomes non-linear.

• The ultimate strength and fracture point of the ...read more

Properties of materials refer to their characteristics and behavior under different conditions.

• Properties of materials can be physical, chemical, or mechanical.

• Physical properties include color, density, and melting point.

• Chemical properties include reactivity and corrosion resistance.

• Mechanical properties include strength, elasticity, and toughness.

• Examples of materials and their properties include steel (strong and d...read more

Rules governing energy and its transformations.

• First law: Energy cannot be created or destroyed, only transformed.

• Second law: Entropy of a closed system always increases over time.

• Third law: Absolute zero cannot be reached.

• Examples: Heat engines, refrigerators, power plants.