Cactus Communications Interview Questions and Answers

Elasticity is the ability of a material to return to its original shape after being stretched or compressed, while plasticity is the ability of a material to permanently deform under stress.

• Elasticity is the property of a material to regain its original shape after being deformed.

• Plasticity is the property of a material to undergo permanent deformation when subjected to stress.

• Rubber is an example of a material with high elasticity, as it can stretch and return to its origina...read more

Stress is the force applied to a material, while strain is the resulting deformation or change in shape.

• Stress is measured in force per unit area (e.g. N/m^2 or Pa)

• Strain is a dimensionless quantity representing the amount of deformation

• Stress and strain are related by the material's modulus of elasticity (Young's modulus)

• Stress can cause materials to deform, leading to strain

• Example: Stretching a rubber band causes stress, resulting in strain

Stress formula is used to calculate the amount of force applied to a material per unit area.

• Stress = Force / Area

• The unit of stress is typically measured in Pascals (Pa) or pounds per square inch (psi)

• Stress can be tensile (stretching) or compressive (squeezing)

• Example: If a force of 100 N is applied to an area of 10 m^2, the stress would be 10 Pa

Tolerance refers to the acceptable range of variation in a measurement or specification.

• Tolerance allows for slight differences in dimensions or characteristics without affecting the overall quality of a product.

• It is important in manufacturing to ensure that parts fit together properly and function as intended.

• Tolerance can be specified as a numerical value or a percentage of the desired measurement.

• For example, a part may have a tolerance of +/- 0.1mm, meaning it can vary b...read more

Stress strain diagram shows the relationship between stress (force applied) and strain (resulting deformation) in a material.

• Stress is the force applied to a material per unit area.

• Strain is the resulting deformation or change in shape of the material.

• The diagram typically shows a linear elastic region, a yield point, and a plastic deformation region.

• Materials exhibit different behaviors on the diagram, such as brittle, ductile, or elastic.

• The ultimate tensile strength and br...read more