Question

The tendency of a deformed solid to regain its actual proportions instantly upon unloading known as ______________

(a) Perfectly elastic

(b) Delayed elasticity

(c) Inelastic effect

(d) Plasticity

I got this question during an interview for a job.

My question comes from Mechanical Properties in chapter Properties of Engineering Materials of Engineering Material & Metallurgy

Answer 1

The correct answer is (a) Perfectly elastic

The explanation: If the recovery of the solid is instantaneous and complete, it is known as perfectly elastic. Delayed elasticity is defined as the steady mode of solid recuperation, while the inelastic effect is when the recuperation of deformed solid is partial. Plasticity is the contradictory occurrence of elasticity.