What is the proportionality limit? a. Limit up to which the necking begins b. Limit up to which the material breaks c. Limit up to which Hooke’s law is valid d. Limit up to which the stress is proportional to strain e. Both C & D The elastic limit of a material is _______. a. The least amount of stress that can be held without permanent deformation b. Highest stress a material can experience without permanent deformation c. Average stress experienced by material in its lifeline d. Strain on material The true stress-strain curve for materials is plotted between ______ a. Load/original cross-sectional area and change in length/original length b. Load/instantaneous cross-sectional area and log (length/original length) c. Load/instantaneous cross-sectional area and change in length/original length d. Load/instantaneous cross-sectional area and instantaneous area/original area. The tensile test is carried on ____ materials. a. Ductile b. Brittle c. Malleable d. Plastic Extensometer is a device that measures the change in length to the gage length a. True b. False
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What is the proportionality limit?
a. Limit up to which the necking begins
b. Limit up to which the material breaks
c. Limit up to which Hooke’s law is valid
d. Limit up to which the stress is proportional to strain
e. Both C & D
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The elastic limit of a material is _______.
a. The least amount of stress that can be held without permanent deformation
b. Highest stress a material can experience without permanent deformation
c. Average stress experienced by material in its lifeline
d. Strain on material
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The true stress-strain curve for materials is plotted between ______
a. Load/original cross-sectional area and change in length/original length
b. Load/instantaneous cross-sectional area and log (length/original length)
c. Load/instantaneous cross-sectional area and change in length/original length
d. Load/instantaneous cross-sectional area and instantaneous area/original area.
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The tensile test is carried on ____ materials.
a. Ductile
b. Brittle
c. Malleable
d. Plastic
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Extensometer is a device that measures the change in length to the gage length
a. True
b. False
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