Volume stress divided by volume strain equal to:
Correct answer: B. Bulk modulus
- A. Young's modulus
- B. Bulk modulus
- C. Shear modulus
- D. Hyper modulus
Explanation
Bulk modulus is the ratio or hydrostatic stress to the volumetric strain. Within the elastic range is called bulk modulus. It is denoted by K or B. Sometimes referred to as the incompressibility, the bulk modulus is a measure of the ability of a substance to withstand changes in volume when under compression on all sides. It is equal to the quotient of the applied pressure divided by the relative deformation.
This question appeared on the HEC Phase I 2017 paper, which you can sit online with every answer explained.
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About Young's Modulus and Stress-Strain
Stress and strain describe how a solid deforms under an applied force, while Young's modulus is the ratio of tensile stress to tensile strain within the elastic limit. The topic includes elastic and plastic behaviour, Hooke's law, the stress strain graph and the difference between stiffness, strength and breaking stress.
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