Strength of Materials MCQ with Answers

26) The thermal stress in a bar is ______ proportional to the change in temperature

Answer is:

directly

27) The thermal or temperature stress is a function of

Answer is:

all of these

Explanation:

The thermal or temperature stress is a function of
* increase in temperature
* modulus of elasticity
* coefficient of linear expansion

28) which of the following statement is correct?

Answer is:

Stress is directly proportional to strain within elastic limit.

29) The deformation of the bar per unit length in the direction of the force is known as

Answer is:

linear strain

Explanation:

The deformation of the bar, per unit length in the direction of the force (i.e. δl/l) is known as primary strain or linear strain.

When a change in length takes place, the strain is known as linear strain.

The deformation of the bar per unit length in the direction of the force is known as linear strain.

The deformation of the bar per unit length in the direction of the force is known as

30) Every direct stress is always accompanied by a strain in its own direction and an opposite kind of strain in every direction, at right angles to it. Such a strain is known as

Answer is:

26) The thermal stress in a bar is ______ proportional to the change in temperature

directly

27) The thermal or temperature stress is a function of

all of these

28) which of the following statement is correct?

Stress is directly proportional to strain within elastic limit.

29) The deformation of the bar per unit length in the direction of the force is known as

linear strain

30) Every direct stress is always accompanied by a strain in its own direction and an opposite kind of strain in every direction, at right angles to it. Such a strain is known as

lateral strain