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Answer: b
Explanation: There are basically 3 stresses available in the machine. They are electrical
stress, mechanical stress and thermal stress.
There are generally three main types of stresses that can be present in a machine:
1. Tensile Stress: This occurs when a force is applied that tends to stretch or elongate the material.
2. Compressive Stress: This occurs when a force is applied that tends to compress or shorten the material.
3. Shear Stress: This occurs when a force is applied parallel or tangential to the surface of the material, causing layers to slide against each other.
In addition to these, there can be other stress types such as torsional stress (twisting) and bending stress depending on the machine component and the applied loads.
Answer: b
Explanation: There are basically 3 stresses available in the machine. They are electrical stress, mechanical stress and thermal stress.