Objective type and Interview Questions on Strength of Materials – interview questions for civil engineers

The impact strength of a material is an index of its
Correct Answer: toughness

In brittle material, normally, breaking stress is equal to ultimate stress

Thermal strain of a body does not depend on
Correct Answer: length

Thermal change of length of a metal is directly proportional to its thermal coefficient

In ductile material ultimate stress is higher than nominal breaking stress but lower than true breaking stress

The property of a material which allows it to be drawn into a smaller section is called
Correct Answer: ductility

The loss of strength in compression due to sustained loading is known as
Correct Answer: creep

The maximum strain energy that can be stored in a body is known as
Correct Answer: proof resilience

The total strain energy stored in a body is termed as
Correct Answer: resilience

Proof stress is stress causing a specific permanent deformation usually 0.1% or 0.2%.

Thermal strain caused in a Reinforced composite body due to change in temperature will be same magnitude

Within Elastic limit Actual Stress is less than Nominal Stress

The energy absorbed by a body, when it is strained within the elastic limit, is known as
Correct Answer: resilience

Value of factor of safety is greater than 1

Hooke’s Law is truly valid up to proportional limit

In ductile material nominal breaking stress is lower than true breaking stress

Mild Steel is widely used in Reinforced Concrete because Thermal coefficient is almost equal to concrete

In tension test Actual Stress is equal to or greater than Nominal Stress

For mild steel, Yield stress is nearly equal to elastic stress

Metals used for suspension system and spring action should have high
Correct Answer: resilience

Mild Steel is more tougher than High Tensile steel

To prevent fatigue failure, the stress developed should be kept below endurance limit

In brittle metals, the failure surface is at ___________ angle to the direction of load.
Correct Answer: 90

Direct Stress are caused due to Axial loads

Shear stress acts parallel to section

Wood is an example of orthotropic material

Poisson’s ratio for cork is __________
Correct Answer: 1

Shear stress causes angular deformation