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For ductile and linearly elastic material, stress is directly proportional to strain a. Below or at the yield point only b. Beyond the yield point only c. Until fracture d. Before ultimate strength only

For ductile and linearly elastic material, stress is directly proportional to strain a. Below or at the yield point only b. Beyond the yield point only c. Until fracture d. Before ultimate strength only

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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Fundamental of stress and strains For ductile and linearly elastic material, stress is directly proportional to strain a. Below or at the yield point only b. Beyond the yield point only c. Until fracture Before ultimate strength only •Which of the following is not true? Linearly elastic material means, a. That it deforms when it is loaded. c. That the relationship of stress and strain is linear until it fractures. b. That it goes back to its original shape when unloaded. d. That the modulus elasticity is the slope of the curve at the elastic region. Which of the following is true? a. The yield strength of a ductile material is nearly the same for both in tension and compression. b. Brittle materials do not undergo plastic deformation but it has ultimate strength c. Both ductile and brittle materials fractures when it reaches the strength limit only. d. None of the aboove lt relates the displacement of the structure so that its various parts fit together a. Equillibrium equations b. Compatibility conditions c. Force-deformation relationships d. All of the above 3. In detail, when a material is loaded longitudinally in uniaxial compression, a. There is a expansion along the lateral c. There is an expansion-contraction reversal along the longitudinal direction d. The lateral direction does not change direction b. There is a contraction along the lateral direction Strain is a. A dimensionless quantity b. Can be expressed in mm/mm c. Can be exprressed in percentage d. All of the above
Transcribed Image Text:Fundamental of stress and strains For ductile and linearly elastic material, stress is directly proportional to strain a. Below or at the yield point only b. Beyond the yield point only c. Until fracture Before ultimate strength only •Which of the following is not true? Linearly elastic material means, a. That it deforms when it is loaded. c. That the relationship of stress and strain is linear until it fractures. b. That it goes back to its original shape when unloaded. d. That the modulus elasticity is the slope of the curve at the elastic region. Which of the following is true? a. The yield strength of a ductile material is nearly the same for both in tension and compression. b. Brittle materials do not undergo plastic deformation but it has ultimate strength c. Both ductile and brittle materials fractures when it reaches the strength limit only. d. None of the aboove lt relates the displacement of the structure so that its various parts fit together a. Equillibrium equations b. Compatibility conditions c. Force-deformation relationships d. All of the above 3. In detail, when a material is loaded longitudinally in uniaxial compression, a. There is a expansion along the lateral c. There is an expansion-contraction reversal along the longitudinal direction d. The lateral direction does not change direction b. There is a contraction along the lateral direction Strain is a. A dimensionless quantity b. Can be expressed in mm/mm c. Can be exprressed in percentage d. All of the above
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