Strength of Materials Quiz

Strength of Materials Quiz Set-1 [2025]”!

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Welcome to “Strength of Materials Quiz Set-1 [2025]”!

In this blog, we’ve curated 50+ thought-provoking multiple-choice questions covering the fundamental and advanced concepts of strength of materials. “Strength of Materials Quiz Set-1 [2025]” is designed to help you refresh your basics, challenge your knowledge, and gain practical insights into the behavior of materials under various forces and loads.

Whether you’re a civil engineering student, a mechanical engineering professional, or preparing for competitive exams, this quiz is the perfect way to enhance your expertise in the strength of materials.

Let’s dive into the “Strength of Materials Quiz Set-1 [2025]” and start exploring!

strength of meterials

Strength of Materials

Strength of Materials (also known as Mechanics of Materials) is a branch of solid mechanics that focuses on the behavior of solid objects under various types of load. It is essential for understanding how materials deform and fail when subjected to forces, moments, and other external conditions.

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If a three hinged parabolic arch carries a uniformly distributed load over the entire span, then any section of the arch is subjected to

2 / 60

According to Eddy's theorem, the vertical intercept between the linear arch and the centre line of actual arch at any point represents to some scale

3 / 60

Internal forces at every cross-section in a arch are

4 / 60

The effect of arching a beam is

5 / 60

Slenderness ratio of a 5 m long column hinged at both ends and having a circular cross-section with diameter 160 mm is

6 / 60

A long column has maximum crippling load when its

7 / 60

Euler's formula for a mild steel long column hinged at both ends is not valid for slenderness ratio

8 / 60

When both ends of a column are fixed, the crippling load is P. If one end of the column is made free, the value of crippling load will be changed to

9 / 60

Buckling load for a given column depends upon

10 / 60

Deflection in a leaf spring is more if its

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Laminated springs are subjected to

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A laminated spring is supported at

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A laminated spring is given an initial curvature because

14 / 60

A simply supported beam with rectangular cross-section is subjected to a central concentrated load. If the width and depth of the beam are doubled, then the deflection at the centre of the beam will be reduced to

15 / 60

If the length of a simply supported beam carrying a concentrated load at the centre is doubled, the defection at the centre will become

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A cantilever beam carries a uniformly distributed load from fixed end to the centre of the beam in the first case and a uniformly distributed load of same intensity from centre of the beam to the free end in the second case. The ratio of deflections in the two cases is

17 / 60

If the deflection at the free end of a uniformly loaded cantilever beam of length 1 m is equal to 7.5 mm, then the slope at the free end is

18 / 60

If the deflection at the free end of a uniformly loaded cantilever beam is 15mm and the slope of the deflection curve at the free end is 0.02 radian, then the length of the beam is

19 / 60

A beam ABC rests on simple supports at A and B with BC as an overhang. D is centre of span AB. If in the first case a concentrated load P acts at C while in the second case load P acts at D, then the

20 / 60

A beam of overall length / rests on two simple supports with equal overhangs on both sides. Two equal loads act at the free ends. If the deflection at the centre of the beam is the same as at either end, then the length of either overhang is

21 / 60

The portion, which should be removed from top and bottom of a circular cross section of diameter d in order to obtain maximum section modulus, is

22 / 60

Two beams, one of circular cross-section and other of square cross-section, have equal areas of cross-section. If subjected to bending

23 / 60

For no torsion, the plane of bending should

24 / 60

A beam of uniform strength has at every cross-section same

25 / 60

A beam of triangular cross section is placed with its base horizontal. The maximum shear stress intensity in the section will be

26 / 60

A prismatic bar when subjected to pure bending assumes the shape of

27 / 60

A beam of square cross-section with side 100 mm is placed with one diagonal vertical. If the shear force acting on the section is 10 kN, the maximum shear stress is

28 / 60

A beam of rectangular cross-section is 100 mm wide and 200 mm deep. If the section is subjected to a shear force of 20 kN, then the maximum shear stress in the section is

29 / 60

A flitched beam consists of a wooden joist 150 mm wide and 300 mm deep strengthened by steel plates 10 mm thick and 300 mm deep one on either side of the joist. If modulus of elasticity of steel is 20 times that of wood, then the width of equivalent wooden section will be

30 / 60

Of the two prismatic beams of same material, length and flexural strength, one is circular and other is square in cross-section. The ratio of weights of circular and square beams is

31 / 60

Of the several prismatic beams of equal lengths, the strongest in flexure is the one having maximum

32 / 60

A portion of a beam between two sections is said to be in pure bending when there is

33 / 60

A prismatic beam of length 1 and fixed at both ends carries a uniformly distributed load. The distance of points of contraflexure from either end is

34 / 60

A beam of overall length 1 with equal overhangs on both sides carries a uniformly distributed load over the entire length. To have numerically equal bending moments at centre of the beam and at supports, the distance between the supports should be

35 / 60

A prismatic beam fixed at both ends carries a uniformly distributed load. The ratio of bending moment at the supports to the bending moment at mid-span is

36 / 60

A cantilever beam AB of length 1 carries a concentrated load W at its midspan C. If the free end B is supported on a rigid prop, then there is a point of contraflexure

37 / 60

The maximum bending moment due to a moving load on a fixed ended beam occurs

38 / 60

The variation of the bending moment in the portion of a beam carrying linearly varying load is

39 / 60

The difference in ordinate of the shear curve between any two sections is equal to the area under

40 / 60

The diagram showing the variation of axial load along the span is called

41 / 60

Rate of change of bending moment is equal to

42 / 60

Maximum bending moment in a beam occurs where

43 / 60

According to Rankine's hypothesis, the criterion of failure of a brittle material is

44 / 60

The state of pure shear stress is produced by

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Shear stress on principal planes is

46 / 60

The radius of Mohr's circle for two equal unlike principal stresses of magnitude p is

47 / 60

The sum of normal stresses is

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If a prismatic member with area of cross-section A is subjected to a tensile load P, then the maximum shear stress and its inclination with the direction of load respectively are

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If the rivet value is 16.8 kN and force in the member is 16.3 kN, then the number of rivets required for the connection of the member to a gusset plate is

50 / 60

Effective throat thickness of a fillet weld is

51 / 60

Weakest section in a fillet weld is

52 / 60

Truss shown in the figure is called as-

strenth of metrials multiple choice question

53 / 60

The effective length of a fillet weld designed to transmit axial load shall not be less than

54 / 60

Size of a right angled fillet weld is given by

55 / 60

Effective length of a weld is equal to

56 / 60

If a composite bar of steel and copper is heated, then the copper bar will be under

57 / 60

Two bars of different materials are of the same size and are subjected to same tensile forces. If the bars have unit elongations in the ratio of 4 : 7, then the ratio of moduli of elasticity of the two materials is

58 / 60

If a material has identical properties in all directions, it is said to be

59 / 60

The elongation of a conical bar under its own weight is equal to

60 / 60

If all the dimensions of a prismatic bar are doubled, then the maximum stress produced in it under its own weight will

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Strength of Materials: The Backbone of Engineering

The world we live in today is built on the principles of engineering, and at the core of this discipline lies an essential subject: Strength of Materials (SOM). Whether it’s the towering skyscrapers that define cityscapes, the bridges that span vast rivers, or the vehicles that zip through highways, understanding the strength and behavior of materials is critical to their design and performance. Let’s delve into what Strength of Materials is and why it is so vital to engineering.

What is Strength of Materials?

Strength of Materials, often referred to as Mechanics of Materials, is a branch of engineering mechanics that studies the behavior of solid objects under various types of forces and loading conditions. It explores how materials deform (strain) and how they resist applied forces (stress), ensuring that structures and machines can safely bear the loads they are subjected to without failure.

The key concepts in SOM include:

  1. Stress and Strain:
    • Stress is the internal force experienced by a material per unit area when subjected to an external load.
    • Strain is the deformation or displacement a material undergoes in response to stress.
  2. Elasticity and Plasticity:
    • Elasticity is a material’s ability to return to its original shape after the removal of a load.
    • Plasticity is the permanent deformation that occurs when a material exceeds its elastic limit.
  3. Young’s Modulus:
    • This property measures a material’s stiffness, indicating how much it will deform under a given load.
  4. Shear and Torsion:
    • These phenomena occur when materials are subjected to forces that cause twisting or shearing rather than simple tension or compression.
  5. Failure Modes:
    • This includes understanding when and how materials fail, whether through cracking, yielding, or buckling.

Why is Strength of Materials Important?

The importance of SOM cannot be overstated. Here are some of the key reasons why it is a cornerstone of engineering:

  1. Safety: Engineers use SOM principles to ensure that structures and machines can withstand loads without catastrophic failure, ensuring the safety of users and operators.
  2. Efficiency: By understanding material behavior, engineers can design structures that are both strong and lightweight, optimizing material usage and reducing costs.
  3. Sustainability: SOM helps in choosing the right materials for the job, minimizing waste, and extending the lifespan of structures, contributing to sustainable development.
  4. Innovation: With advances in materials science, engineers can push the boundaries of design, creating futuristic structures and machines that were once thought impossible.

Real-World Applications

The principles of Strength of Materials are applied across numerous industries:

  • Civil Engineering: Designing buildings, bridges, dams, and roads.
  • Mechanical Engineering: Developing machines, engines, and vehicles.
  • Aerospace Engineering: Creating lightweight yet robust aircraft and spacecraft components.
  • Biomedical Engineering: Designing prosthetics, implants, and medical devices.

Challenges in Strength of Materials

While SOM provides invaluable tools for engineers, it also comes with challenges:

  • Complex Loading Conditions: Real-world applications often involve complex and combined loads, making analysis challenging.
  • Material Variability: Natural and manufactured materials can vary in quality, affecting performance.
  • Dynamic and Cyclic Loads: Many structures and machines experience loads that change over time, requiring advanced techniques for analysis.

The Future of Strength of Materials

As technology advances, so does the field of SOM. Computational tools like Finite Element Analysis (FEA) are enabling engineers to simulate material behavior with incredible precision. Additionally, the development of new materials, such as composites and nanomaterials, is opening up exciting possibilities for innovation

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