What are the different types of fits? What are the factors that can affect the Factor mechanical quality control interview questions and answers pdf safety selection? The factor of safety is used in designing a machine component.

The accuracy and authenticity of test results to the actual machine parts. The loss of property and life in case of failures. The limit of initial stresses at the time period of manufacture.

The extent to which the assumptions can be simplified. What is heat treatment and why is it done?

In order to improve the hardness of metals. For the softening of the metal. In order to improve the machinability of the metal.

To change the grain size. To provide better resistance to heat, corrosion, wear etc.