Strength of Materials MCQ
Strength of Materials MCQ helps you understand core mechanical engineering concepts like stress, strain, elasticity, shear force, bending moments, deflection, torsion, and material strength. Practice these objective questions to improve problem-solving skills and prepare for competitive exams effectively.
Q1. The ability of a material to resist deformation is called?
A. Strength
B. Elasticity
C. Plasticity
D. Toughness
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Q2. The point at which material starts to deform permanently is called?
A. Ultimate point
B. Fracture point
C. Elastic limit
D. Yield point
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Q3. Stress is defined as?
A. Force Γ Area
B. Force / Area
C. Area / Force
D. Force Γ Velocity
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Q6. Hookeβs law is valid up to?
A. Breaking point
B. Yield point
C. Elastic limit
D. Ultimate point
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Q7. Youngβs modulus is the ratio of?
A. Stress/Strain
B. Strain/Stress
C. Stress Γ Strain
D. Stress - Strain
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Q8. The property to absorb energy is called?
A. Hardness
B. Impact strength
C. Toughness
D. Ductility
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Q9. Poissonβs ratio is?
A. Lateral strain / Longitudinal strain
B. Stress / Strain
C. Youngβs modulus / Shear modulus
D. Longitudinal strain / Lateral strain
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Q10. Which material has highest Poissonβs ratio?
A. Rubber
B. Steel
C. Brass
D. Concrete
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Q11. The bending moment at the point of contraflexure is?
A. Maximum
B. Zero
C. Minimum
D. Infinity
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Q13. The energy stored in a body due to strain is called?
A. Heat energy
B. Potential energy
C. Strain energy
D. Kinetic energy
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Q14. Modulus of rigidity is also known as?
A. Youngβs modulus
B. Bulk modulus
C. Shear modulus
D. Flexural modulus
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Q15. A brittle material fails at?
A. High strain
B. Low strain
C. Elastic limit
D. Fatigue point
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Q16. The point of maximum stress in a beam is?
A. Neutral axis
B. Top or bottom fiber
C. Middle center
D. Center axis
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Q17. Moment of inertia depends on?
A. Shape only
B. Area only
C. Area distribution
D. Density
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Q19. Which failure occurs due to reversal of stresses?
A. Brittle fracture
B. Fatigue failure
C. Creep failure
D. Impact failure
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Q20. The material property to resist scratching is?
A. Hardness
B. Toughness
C. Elasticity
D. Creep
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Q21. Elastic deformation is?
A. Permanent
B. Temporary
C. Non-recoverable
D. Irreversible
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Q22. Plastic deformation is?
A. Fully recoverable
B. Temporary
C. Permanent
D. Frictional
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Q23. A shaft resists which type of load?
A. Bending
B. Compression
C. Torsion
D. Shear only
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Q24. The maximum shear stress theory is also known as?
A. Rankine theory
B. Tresca theory
C. Von Mises theory
D. Mohr theory
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Q25. Which theory is best for ductile materials?
A. Rankine theory
B. Guest theory
C. Von Mises theory
D. St. Venant theory
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Q26. Bulk modulus relates to?
A. Volume change
B. Shape change
C. Surface change
D. Shear deformation
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Q27. Creep occurs at?
A. Low temperature
B. High temperature
C. Zero temperature
D. Room temperature
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Q28. Factor of safety is?
A. Ultimate stress / Working stress
B. Working stress / Ultimate stress
C. Yield stress / Stress
D. Stress Γ Strain
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Q30. The shear force at the free end of a cantilever is?
A. Zero
B. Maximum
C. Minimum
D. Infinite
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