Strength of Materials MCQ – 100 SOM Objective Questions

Strength of Materials MCQ with Answers help engineering students understand how materials behave under different types of loads, stress, strain, bending, and torsion. Strength of Materials (SOM) is a fundamental subject in mechanical, civil, aerospace, and structural engineering. Practicing Strength of Materials MCQ allows students to quickly revise key concepts and improve their ability to solve objective questions in technical examinations. These questions are commonly asked in exams such as GATE, FE (Fundamentals of Engineering), PE Mechanical, ESE, SSC JE, RRB JE, PSU recruitment tests, diploma engineering exams, and university semester examinations.

Strength of Materials MCQ with Answers for Engineering Exams

Regular practice of Strength of Materials MCQ with answers helps students revise important topics like elastic constants, bending stress, torsion of shafts, shear force, and beam loading. Objective questions improve concept clarity, accuracy, and exam speed, which are essential for competitive engineering exams and technical recruitment tests.

Why Practice Strength of Materials Objective Questions

Solving Strength of Materials objective questions helps learners identify important formulas and engineering principles. Topics such as Hooke’s law, bending moment diagrams, torsional rigidity, and column buckling frequently appear in engineering examinations. Practicing these SOM MCQ with answers helps students build a strong foundation and perform better in technical exams and engineering assessments.

Strength of Materials MCQ with Answers

Question 1: For a circular shaft subjected to pure torsion, the shear stress distribution across the radius is:

Question 2: The strain energy stored in a body subjected to gradually applied load P producing displacement δ is:

Question 3: The relation between Young’s modulus (E), shear modulus (G), and Poisson’s ratio (ν) is:

Question 4: A cantilever beam carrying a point load at the free end will have maximum bending moment at:

Question 5: The neutral axis in a beam subjected to bending passes through:

Question 6: The maximum shear stress in a rectangular beam occurs at:

Question 7: The slenderness ratio of a column is defined as:

Question 8: Euler’s critical load for a column with both ends hinged is:

Question 9: For a circular shaft subjected to torsion, the angle of twist is proportional to:

Question 10: The shear stress distribution in a circular shaft under torsion is:

Question 11: The principal stresses occur on planes where:

Question 12: For plane stress condition, the maximum shear stress is:

Question 13: The bending stress in a beam is given by:

Question 14: The polar moment of inertia of a solid circular shaft of diameter d is:

Question 15: For a beam with constant flexural rigidity EI, slope is maximum where:

Question 16: The strain energy stored in a member subjected to axial load P is:

Question 17: The failure theory suitable for ductile materials is:

Question 18: The shear center of a symmetric I-section lies:

Question 19: The torsional rigidity of a shaft is defined as:

Question 20: The ratio of lateral strain to longitudinal strain is known as:

Question 21: A solid circular shaft transmits power at constant torque. If the shaft diameter is doubled while the torque remains unchanged, what will be the new maximum shear stress compared with the original value?

Question 22: A simply supported beam of span L carries a uniformly distributed load over the entire span. The bending moment at the midspan will be:

Question 23: When a rectangular beam is subjected to pure bending, the maximum bending stress occurs at which location within the cross-section?

Question 24: If the Young’s modulus of a material increases while all other parameters remain constant, the deflection of a beam subjected to the same loading will:

Question 25: A long column fails by buckling when subjected to compressive load. According to Euler’s theory, the critical load depends primarily on:

Question 26: In Mohr’s circle representation of plane stress, the radius of the circle represents:

Question 27: A beam experiences bending without shear force at a certain section. This condition occurs when:

Question 28: For a hollow circular shaft subjected to torsion, if the outer diameter remains constant but the inner diameter increases, the torsional strength will:

Question 29: In bending theory of beams, the assumption that plane sections remain plane after bending implies that:

Question 30: A cantilever beam subjected to uniformly distributed load across its span will experience maximum bending moment at:

Question 31: The strain energy stored in a beam due to bending is proportional to:

Question 32: In a beam subjected to transverse loading, shear stress distribution over a rectangular section is:

Question 33: The section modulus of a beam cross-section represents:

Question 34: For a circular shaft transmitting torque, the shear stress is directly proportional to:

Question 35: If two beams of same material and length but different second moment of area are subjected to identical loading, the beam with higher moment of inertia will:

Question 36: The neutral surface of a beam subjected to bending is defined as the surface where:

Question 37: In thick cylinder theory (Lame’s equation), the maximum circumferential stress occurs at:

Question 38: The shear center of an unsymmetrical channel section lies:

Question 39: The energy method commonly used to calculate beam deflection is known as:

Question 40: In Mohr’s circle, the center of the circle represents:

Question 41: A prismatic bar of length L and constant cross-section is subjected to axial tensile force P. If the length is doubled while keeping load and area constant, the total elongation will:

Question 42: For a beam subjected to pure bending, the curvature of the beam is given by:

Question 43: In a circular shaft under torsion, the shear strain at the center of the shaft is:

Question 44: A column with one end fixed and the other end free has effective length equal to:

Question 45: If the diameter of a circular beam is increased by 20%, the bending strength will approximately:

Question 46: A beam carrying only bending moment and no shear force between two sections is said to be under:

Question 47: The maximum deflection of a simply supported beam carrying central point load occurs at:

Question 48: If a material has high bulk modulus, it means the material is highly resistant to:

Question 49: For thin cylindrical pressure vessels, hoop stress is:

Question 50: The point in the cross section of a beam where shear stress is zero is located at:

Question 51: In combined bending and torsion of shafts, the equivalent torque is determined using:

Question 52: The slope of bending moment diagram gives:

Question 53: The shear stress at neutral axis of a rectangular beam is:

Question 54: The unit of modulus of resilience is:

Question 55: For a beam of uniform strength, the bending stress along the beam is:

Question 56: In torsion of circular shafts, the relationship between torque and angle of twist is:

Question 57: A beam is said to be statically determinate if:

Question 58: The failure theory most suitable for brittle materials is:

Question 59: The ratio of shear stress to shear strain within elastic limit is known as:

Question 60: The point where resultant load acts on a distributed load system is known as:

Question 61: A cantilever beam of length L carries a uniformly distributed load w over its entire span. The maximum bending moment occurs at the fixed end and is equal to:

Question 62: In a rectangular beam under transverse loading, the distribution of shear stress across the depth is:

Question 63: If a solid circular shaft is replaced by a hollow shaft of the same material and weight with internal diameter half the external diameter, the torque transmitting capacity will:

Question 64: The strain energy stored in a body due to gradually applied load P producing displacement δ is:

Question 65: For a thin spherical pressure vessel subjected to internal pressure p, the circumferential stress is given by:

Question 66: A column will buckle about the axis having:

Question 67: The relation between Young’s modulus (E), shear modulus (G), and Poisson’s ratio (ν) is:

Question 68: The section modulus of a rectangular beam of width b and depth d about its neutral axis is:

Question 69: In Mohr’s circle for stress analysis, the radius of the circle represents:

Question 70: The deflection of a simply supported beam varies inversely with:

Question 71: For a beam subjected to pure bending, the strain distribution across the depth is:

Question 72: The principal stresses at a point are 80 MPa and −20 MPa. The maximum shear stress at the point is:

Question 73: A beam carrying a uniformly varying load has a shear force diagram which is:

Question 74: The bending stress in a beam is directly proportional to:

Question 75: The torsional rigidity of a shaft is defined as:

Question 76: For a short column under compression, failure occurs primarily due to:

Question 77: The ratio of lateral strain to longitudinal strain is known as:

Question 78: In a simply supported beam carrying a central point load, the deflection curve is:

Question 79: The energy absorbed by a material within elastic limit is called:

Question 80: A shaft subjected to torque experiences shear stress which varies:

Question 81: The neutral axis of a beam section passes through:

Question 82: If the span of a beam is doubled keeping load constant, the deflection will approximately:

Question 83: The maximum shear stress theory is also called:

Question 84: For a beam, the point of contraflexure is the point where:

Question 85: The shear force diagram for a beam subjected to a point load is:

Question 86: For a circular shaft, polar moment of inertia is given by:

Question 87: If the load on a beam is suddenly applied, the maximum stress induced will be:

Question 88: The unit of flexural rigidity is:

Question 89: A beam with both ends fixed carries a central load W. The maximum bending moment occurs at:

Question 90: In torsion equation T/J = τ/R = Gθ/L, the term θ represents:

Question 91: The maximum principal stress theory is also known as:

Question 92: The property of a material to resist sudden impact load is called:

Question 93: In beam theory, the assumption that plane sections remain plane after bending is associated with:

Question 94: If the diameter of a shaft is doubled, the torsional strength increases by:

Question 95: A beam is said to be laterally unstable when:

Question 96: In strain energy method, Castigliano’s theorem is mainly used to determine:

Question 97: The ratio of actual stress to working stress is called:

Question 98: The slope at the free end of a cantilever beam carrying end load W is:

Question 99: The slenderness ratio of a column is defined as:

Question 100: For a beam subjected to bending, the bending stress is maximum at:

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Strength of Materials MCQ with Answers for Engineering Exams

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