True Stress & True Strain MCQ

Test your knowledge with important True Stress & True Strain MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30+ more True Stress & True Strain MCQs on Bissoy. Bissoy App

• A uniform cylinder of length L is compressed to half of its original length. Calculate true strain and engineering strain for the cylinder.
  ক

  Engineering strain = 1, True strain = 0.69

  খ

  Engineering strain = 0.5, True strain = 0.69

  গ

  Engineering strain = -0.5, True strain = -0.69

  ঘ

  Engineering strain = -1, True strain = -0.69
• A tensile specimen of 6 mm diameter and gauge length 25 mm reached a maximum load of 45 kN and fractured at 35 kN. The maximum diameter at fracture is 5mm. Determine the true stress at the fracture point.
  ক

  445 MPa

  খ

  371.13 MPa

  গ

  398 MPa

  ঘ

  518.87 MPa
• A tensile specimen of 6 mm diameter and gauge length 25 mm reached a maximum load of 45 kN and fractured at 35 kN. The maximum diameter at fracture is 5mm. Determine the engineering stress at maximum load (Ultimate tensile strength).
  ক

  796 MPa

  খ

  398 MPa

  গ

  512 MPa

  ঘ

  52 MPa
• What is the relationship between engineering stress and true stress? Given that; s = engineering stress, σ = true stress, e = engineering strain, ε = true strain. d) σ = se+1
  ক

  σ = s(e+1)

  খ

  σ = ln(s)

  গ

  σ = ln[s(e+1)

  ঘ

  s(e+1)
• For perfectly plastic material, Poisson’s ratio is equal to ________
  ক

  1

  খ

  0.5

  গ

  0.33

  ঘ

  0
• The advantage of using true strain is that the total true strain is equal to the sum of the incremental strains.
  ক

  True

  খ

  False
• A uniform cylinder of length L is elongated to twice of its original length. Calculate true strain and engineering strain for the cylinder in percentage?
  ক

  Engineering strain=100%, True strain=69.31%

  খ

  Engineering strain=69.31%, True strain=100%

  গ

  Engineering strain=50%, True strain=50%

  ঘ

  Engineering strain=50%, True strain=100%
• The relationship between the true strain and engineering strain is given as _____ Where e=conventional strain, ε= Engineering strain
  ক

  ε=e

  খ

  ε=ln(e)

  গ

  ε=ln(e+1)

  ঘ

  ε=ln(1/(1+e))
• The initial length of sample is Lo and instantaneous length of the sample is L. The true strain of the material will be equal to _________
  ক

  L/Lo

  খ

  Lo/L

  গ

  ln{(L-Lo)/L}

  ঘ

  ln{L/Lo}
• The engineering stress-strain curve does not give an accurate indication of the deformation characteristic of the material because it’s calculation is based on the original dimension of the specimen. These dimensions continuously change during the test.
  ক

  True

  খ

  False