Sri Vignesh Polytechnic College Mechanical Lecturer Interview Questions and Answers

Stress strain curve is a graphical representation of the relationship between stress and strain of a material.

• It shows how a material deforms under stress.

• It helps in determining the material's strength and elasticity.

• It consists of three regions: elastic, plastic, and fracture.

• Examples include steel, rubber, and concrete.

• The slope of the curve in the elastic region is called Young's modulus.

• The area under the curve in...read more

Hook's law states that the extension of a spring is directly proportional to the force applied to it.

• It is a principle of physics that describes the relationship between the force applied to a spring and the distance it stretches or compresses.

• The law is named after Robert Hooke, an English physicist who first formulated it in the 17th century.

• The law is expressed mathematically as F = kx, where F is the force applied,...read more

Accuracy is how close a measurement is to the true value, while precision is how consistent the measurements are.

• Accuracy refers to how close a measurement is to the true value or target.

• Precision refers to how consistent the measurements are when repeated.

• Accuracy can be affected by systematic errors, while precision can be affected by random errors.

• For example, hitting the bullseye on a dartboard is accurate, while h...read more