Strength of Materials Mcqs

This set of Mechanical engineering Multiple Choice Questions & Answers (MCQs) focuses on study of “ Strength of Materials ”. These questions are chosen from a collection of most authoritative and best reference books on Mechanical engineering. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, University and College entrance exams, Jobs and interviews. One should practice our MCQS to assimilate Strength of Materials comprehensively.

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1.
If a part is constrained to move and heated, it will develop ____________________?

Principal stress

Tensile stress

Compressive stress

Shear stress

2.
The value of modulus of elasticity for mild steel is of the order of________________?

2.1xl05 kg/cm2

2.1 X 106 kg/cm2

2.1 x 107 kg/cm2

0.1 xlO6 kg/cm2 (

3.
The buckling load for a given material depends on___________________?

Slenderness ratio and area of cross-section

Poisson’s ratio and modulus of elasticity

Slenderness ratio and modulus of elasticity

Slenderness ratio, area of cross-section and modulus of elasticity

4.
The property of a material by virtue of which a body returns to its original, shape after removal of the load is called____________________?

Plasticity

Elasticity

Ductility

Malleability

5.
Poisson’s ratio is defined as the ratio of_________________?

Longitudinal stress and longitudinal strain

Longitudinal stress and lateral stress

Lateral stress and longitudinal stress

Lateral stress and lateral strain

6.
The property of a material by virtue of which it can be beaten or rolled into plates is called _________________?

Malleability

Ductility

Plasticity

Elasticity

7.
The percentage reduction in area of a cast iron specimen during tensile test would be of the order of_________________?

More than 50%

25—50%

10—25%

5—10%

8.
In a tensile test, near the elastic limit zone, the______________?

Tensile strain increases more quickly

Tensile strain decreases more quickly

Tensile strain increases in proportion to the stress

Tensile strain decreases in proportion to the stress

9.
In the tensile test, the phenomenon of slow extension of the material, i. e. stress increasing with the time at a constant load is called_____________?

Creeping

Yielding

Breaking

Plasticity

10.
Rupture stress is________________?

Breaking stress

Maximum load/original cross-sectional area

Load at breaking point/A

Load at breaking point/neck area

11.
The ratio of lateral strain to the linear strain within elastic limit is known as_______________?

Young’s modulus

Bulk modulus

Modulus of rigidity

Modulus of elasticity

12.
The stress at which extension of the material takes place more quickly as compared to the increase in load is called______________?

Elastic point of the material

Plastic point of the material

Breaking point of the material

Yielding point of the material

13.
Flow stress corresponds to___________________?

Fluids in motion

Breaking point

Plastic deformation of solids

Rupture stress

14.
The value of Poisson’s ratio for cast iron is_________________?

0.1 to 0.2

0.23 to 0.27

0.25 to 0.33

0.4 to 0.6

15.
The energy absorbed in a body, when it is strained within the elastic limits, is known as________________?

Strain energy

Resilience

Proof resilience

Modulus of resilience

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