Important questions about Stress and Strain. Stress and Strain MCQ questions with answers. Stress and Strain exam questions and answers for students and interviews.

What is the point P shown on the stress strain curve?

Options

A : a. Upper yield point

B : b. Yield plateau

C : c. Elastic limit

D : d. Ultimate point

What is the point P shown in the stress-strain curve?

Options

A : a. Lower yield point

B : b. Elastic limit

C : c. Proportionality limit

D : d. Breaking point

What is the point shown in the stress strain curve?

Options

A : a. Elastic limit

B : b. Lower yield point

C : c. Yield plateau

D : d. Lower strain point

A rigid beam ABCD is hinged at D and supported by two springs at A and B as shown in the given figure. The beam carries a vertical load P and C. the stiffness of spring at A is 2K and that of B is K. What will be the ratio of forces of spring at A and that of spring at B?

Options

A : a. 4

B : b. 3

C : c. 2

D : d. 1

The dimension of strain is?

Options

A : a. LT?²

B : b. N/m²

C : c. N

D : d. Dimensionless

What is tensile strain?

Options

A : a. The ratio of change in length to the original length

B : b. The ratio of original length to the change in length

C : c. The ratio of tensile force to the change in length

D : d. The ratio of change in length to the tensile force applied

Find the strain of a brass rod of length 250mm which is subjected to a tensile load of 50kN when the extension of rod is equal to 0.3mm?

Options

A : a. 0.025

B : b. 0.0012

C : c. 0.0046

D : d. 0.0014

Find the elongation of an steel rod of 100mm length when it is subjected to a tensile strain of 0.005?

Options

A : a. 0.2mm

B : b. 0.3mm

C : c. 0.5mm

D : d. 0.1mm

A tensile test was conducted on a mild steel bar. The diameter and the gauge length of bat was 3cm and 20cm respectively. The extension was 0.21mm. What is the value to strain?

Options

A : a. 0.0010

B : b. 0.00105

C : c. 0.0105

D : d. 0.005

i) Strain is a fundamental behaviour of a material. ii) Strain does not have a unit.

Options

A : a. Both i and ii are true and ii is the correct explanation of i

B : b. Both i and ii are true but ii is not the correct explanation of i

C : c. i is true but ii is false

D : d. ii is true but i is false

A tensile test was conducted on a steel bar. The gauge length of the bar was 10cm and the extension was 2mm. What will be the percentage elongation?

Options

A : a. 0.002

B : b. 0.02

C : c. 0.2

D : d. 2

The lateral strain is ___________

Options

A : a. The ratio of axial deformation to the original length

B : b. The ratio of deformation in area to the original area

C : c. The strain at right angles to the direction of applied load

D : d. The ratio of length of body to the tensile force applied on it

A rod 200cm long is subjected to an axial pull due to which it elongates about 2mm. Calculate the amount of strain?

Options

A : a. 0.001

B : b. 0.01

C : c. 0.02

D : d. 0.002

Some structural members subjected to a long time sustained loads deform progressively with time especially at elevated temperatures. What is such a phenomenon called?

Options

A : a. Fatigue

B : b. Creep

C : c. Creep relaxation

D : d. Fracture

Find the strain of a brass rod of length 100mm which is subjected to a tensile load of 50kN when the extension of rod is equal to 0.1mm?

Options

A : a. 0.01

B : b. 0.001

C : c. 0.05

D : d. 0.005

Which law is also called as the elasticity law?

Options

A : a. Bernoulli’s law

B : b. Stress law

C : c. Hooke’s law

D : d. Poisson’s law

A member which does not regain its original shape after removal of the load producing deformation is said __________

Options

A : a. Plastic

B : b. Elastic

C : c. Rigid

D : d. None of the mentioned

The body will regain it is previous shape and size only when the deformation caused by the external forces, is within a certain limit. What is that limit?

Options

A : a. Plastic limit

B : b. Elastic limit

C : c. Deformation limit

D : d. None of the mentioned

What kind of elastic materials are derived from a strain energy density function?

Options

A : a. Cauchy elastic materials

B : b. Hypo elastic materials

C : c. Hyper elastic materials

D : d. None of the mentioned

What the number that measures an object’s resistance to being deformed elastically when stress is applied to it?