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This set of Material Science Multiple Choice Questions & Answers (MCQs) focuses on Material Science Set 23
Q1 | total energy absorbed by material in elastic deformation is known as
- resilience
- stiffness
- toughness
- modulus of elasticity
Q2 | material obey's hooks law in region
- plastic deformation
- elastic deformation
- the region of change of elasticity to plasticity
- none of theabove
Q3 | is constant at the yield point
- strain
- stress
- temperature
- all of the above
Q4 | the material shows atrain at cnstant stress that point is known as
- yield stress
- ultimate tensile stress
- breaking stress
- all of the above
Q5 | the stress-strain diagram becomes non-linear
- after yieldpoint
- after uts
- before yieldpoint
- before uts
Q6 | material shows localised deformation after
- after yieldpoint
- after uts
- before yieldpoint
- before uts
Q7 | area under stress-strain curve in elastic region is called as
- resilience
- stiffness
- toughness
- modulus of elasticity
Q8 | total area under stress-strain curve is calledas
- toughness
- resilience
- malleability
- ductility
Q9 | toughness is defined as total energy absorbed by material in
- elastic region
- plastic region
- both of theabove
- none of theabove
Q10 | modulus of toughness is
- toughness/area
- toughness/volume
- toughness/width
- toughness/length
Q11 | brittle material shows toughness
- low
- high
- medium
- none of theabove
Q12 | ductile material shows toughness
- low
- high
- medium
- none of theabove
Q13 | is the property of a material by which it can be drawin into wires
- ductility
- plasticity
- malleability
- toughness
Q14 | resistance of a material for its deformation iscalled as
- hardness
- toughness
- stiffness
- all of the above
Q15 | materials like Al shows better
- ductility
- malleability
- toughness
- all of the above
Q16 | modulus of resilience is
- toughness / volume
- resilience / volume
- energy absorbed / volume
- stiffness / volume
Q17 | modulus of resilience is given as
- 2σ2/e
- σ2/e
- σ2/2e
- σ2/4e
Q18 | A tensile test specimen has crosssection
- square
- rectangular
- circular
- all of the above
Q19 | for tensile testing machine is used
- universal testing
- impact testing
- fatigue testing
- torsion testing
Q20 | engineering stress is defined as
- instantaneou s load / (original cross section area)
- applied load/ (actual cross section area)
- applied load/ (original cross section area)
- instantaneou s load / (actual cross section area)
Q21 | true stress is defiend as
- instantaneou s load / (original cross section area)
- applied load/ (actual cross section area)
- applied load/ (original cross section area)
- instantaneou s load / (original cross section area)
Q22 | for measuring the elongation of specimen onUTM during tensile test is used
- durometer
- elastometer
- vernier
- extensometer
Q23 | dummy pointer on load - cell is used toindicate
- yield load
- breaking load
- ultimate load
- none of theabove
Q24 | after ultimate stress, stress goes on
- reducing
- increasing
- stabilised
- all of the above
Q25 | all the calculations in tensile test are carried out on a particular distance which is called as
- gauge length
- gause length
- gase length
- none of theabove