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This set of Strength of Materials Multiple Choice Questions & Answers (MCQs) focuses on Strength Of Materials Set 6
Q1 | Strain is defined as deformation per unit
- area
- length
- load
- volume
Q2 | The units of modulus of elasticity are the same as of
- stress
- modulus of rigidity
- pressure
- any of the above
Q3 | Approximate value of Young's modulus for mild steel is
- 100gpa
- 205mpa
- 205gpa
- 100mpa
Q4 | 1MPa is equal to
- 1n/m2
- 1 n/mm2
- 1kn/m2
- 1kn/mm2
Q5 | Temperature stress is a function of
- modulus of elasticity
- coefficient of linear expansion
- change in temperature
- all of the above
Q6 | Factor of safety is defined as ratio of
- ultimate stress to allowable stress
- ultimate stress to yield stress
- allowable stress to yield stress
- allowable stress to ultimate stress
Q7 | The stress at which elongation of a material is quite large as compared to increase in load is known as
- ultimate point
- yield point
- elastic limit
- rupture point
Q8 | Poisson's ratio is defined as ratio of
- axial strain to transverse strain
- transverse strain to axial strain
- shear strain to axial strain
- axial strain to shear strain
Q9 | During free expansion due to temperature rise or fall,
- no stress is developed
- no strain is developed
- both are developed
- only stress is developed but strain not developed
Q10 | For any material, the maximum value ofE in terms of G is E =
- g
- 2g
- 3g
- 2.5g
Q11 | For any material, the minimum value of E in terms of G is E
- g
- 2g
- 3g
- 2.5g
Q12 | Two materials are having modulus of elasticity, modulus of rigidities and bulk modulus as (E1, E2), (C1, C2), and (K1, K2). The modulus ratio is given by
- e1/c2
- e1/k2
- e1/e2
- c1/k2
Q13 | The force
- stiffness
- plasticity
- flexibility
- resilience
Q14 | Thermal stress is developed in a temperature when _.
- allowed to expand freely
- not allowed to expand freely
- either a) or b)
- none of the above
Q15 | Which of the following beams will develop thermal stress when subjected to a change in temperature ?
- cantilever beam
- beam with hinges at both ends
- simply supported beam
- none of the above
Q16 | Change in length of a rod due to change in depend on _.
- original length
- change in temperature
- modulus of elasticity
- coefficient of thermal expansion
Q17 | A steel strip is welded to a copper strip of the same dimensions along the length. The coefficient of thermal expansion for copper is greater than that for steel. If temperature is increased, ___ .
- copper has tensile stress
- steel has tensile stress
- both have tensile stress
- none of the above
Q18 | While punching a hole in a metal sheet using a punch, stress is developed in the metal sheet.
- normal compressive
- normal tensile
- shear
- lateral
Q19 | While punching a hole in a metal sheet using a punch, stress is developed in the Punch.
- normal compressive
- normal tensile
- shear
- lateral
Q20 | Poisson’s ratio for rubber is……that for steel.
- larger than
- equal to
- smaller than
- any of the above
Q21 | For a certain material, the Poisson's ratio is 0. The relation between modulus of elasticity E and the bulk modulus K is E = ____ _.
- 0
- 3k
- 1.5k
- 1.2k
Q22 | For a certain material, E = 3K . The value of Poisson's ratio for the material will be__ _.
- 0
- 0.25
- 0.5
- 0.75
Q23 | Modulus of rigidity is defined as the ratio of
- longitudinal stress to longitudinal strain
- shear stress to shear strain
- stress to strain
- stress to volumetric strain
Q24 | If the Young's modulus of elasticity of a material is twice its modulus of rigidity, then thePoisson's ratio of the material is
- -1
- -0.5
- 0.5
- zero
Q25 | Limit of proportionality depends upon
- area of cross-section
- type of loading
- type of material
- all of the above