JNTU Ananthapur Basic civil and mechanical engineering first unit multiple choice questions and answers
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The document covers various concepts related to mechanical properties of materials, including strain, stress, elasticity, and different types of forces. It discusses definitions and formulas related to Young's modulus, shear modulus, bulk modulus, and Poisson’s ratio. Additionally, it touches on beam types and their characteristics, specifically in the context of bending moments and loading conditions.
JNTU Ananthapur Basic civil and mechanical engineering first unit multiple choice questions and answers
- 1. 1.The deformation in unit original dimension is termed as strain. • A.stress. • B.Strain • C.Force • D.Youngs Modulus • https://www.proprofs.com/quiz- school/story.php?title=mjc1mjczmwexam
- 3. 2.This internal resistance offered by the body to counteract the applied load is called • A.stress. • B.Strain • C.Force • D.Youngs Modulus
- 4. 3.When an external force produces elongation of the body in its direction, it is termed as • A.Tensile force. • B.Compresive force • C.Stress • D.Starin
- 5. 4.When an external force causes shortening of the body in the direction of force, it is termed as a………….. • A.Tensile force. • B.Compresive force • C.Stress • D.Starin
- 6. 5.When a body is subjected to two equal and opposite forces acting tangentially across the resisting section, as a result of which the body tends to shear off across the section, then this tangential force is termed as • A.Shear strain • B.Shear stress • C.A &B • D.NONE
- 7. 6.The change in volume of an elastic body due to external force in unit original volume is called as the volumetric strain • A.Shear strain • B.Shear stress • C. Volumetric strain • D.NONE
- 8. • 7.The property by which a body returns to its original shape after the removal of external load is elasticity. • A.Shear strain • B.Shear stress • C. Volumetric strain • D.Elasticity
- 9. • 8.………… states that when an elastic material is stressed within elastic limit, the stressis proportional to the strain. • A.Hooke’s • B.Elasticity • C.Plasticity • D.none
- 10. • 9.The ratio of the axial stress to the corresponding axial strain, with in elastic limit is called the young’s modulus • A.Young’s Modulus • B. Shear modulus
- 11. 10.The ratio of the shear stress to the corresponding shear strain is a constant, which is called shear modulus Then symbol of shear modulus is --------- • A.G • B.C • C.C • D.R
- 12. 11.When a body is subjected to uniform direct stress in all the three mutually perpendicular • direction, the ratio of the direct stress to the corresponding volumetric strain is found to • be a constant which is called the bulk modulus • A. Bulk Modulus • B.Young’s Modulus • C. Shear modulus • D.NONE
- 13. 12.Poisson’s ratio = • A. Lateral strain/ Longitudinal Strain • B. Longitudinal Strain/ Lateral strain • C.Change in length /original length • D.none
- 14. • 13.Factor of safety • A.Ultimate stress/ Allowable stress • B. Ultimate stress/ Bulk modulus • C. Ultimate stress/ Shear modulus • D. Ultimate stress/ Young’s modulus
- 15. Bending moment 14.------------acts about the axes of the members that are perpendicular to the member (vertical and horizontal). • A. Bending moment • B. Stress • C. strain • D. None
- 16. 15.In case of simply supported beam, bending moment will be zero at • A. supports • B.Middle • C.Center • D.none
- 17. • 16.U.D.L stands for? a) Uniformly diluted length b) Uniformly developed loads c) Uniaxial distributed load d) Uniformly distributed load
- 18. • 17.A beam which extends beyond it supports can be termed as __________ a) Over hang beam b) Over span beam c) Isolated beams d) Tee beams
- 19. • 18.Example for cantilever beam is ______ a) Portico slabs b) Roof slab c) Bridges d) Railway sleepers
- 20. • 19.The relationship between Young’s modulus (E), Bulk modulus (K) and Poisson’s ratio (µ) is given by • A.E=2K(1-2µ) • B.E=3K(1-2µ) • C.E=2K(1-2µ) • D.E=2K(1-3µ)
- 21. 20.Which of the following is not a basic type of strain? • A.Compressive strain • B.Shear strain • C.Area strain • D.Volume strain