Strain Life Equation MCQ

Test your knowledge with important Strain Life Equation MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Strain Life Equation MCQs at Bissoy

• Which is not a characteristic feature of low cycle fatigue?
  ক

  High-stress amplitude

  খ

  High strain amplitude

  গ

  Thermal fluctuation

  ঘ

  Low-stress cycle
• The c (fatigue ductility exponent) is a ______________
  ক

  positive integer

  খ

  negative integer

  গ

  negative fraction

  ঘ

  positive fraction
• Smaller the value of c (fatigue ductility exponent) ____________ will be the life of component.
  ক

  longer

  খ

  shorter

  গ

  no relation

  ঘ

  depends on the material
• The fatigue ductility coefficient is approximately equal to _______________ for most of the metals.
  ক

  strain hardening exponent

  খ

  true fracture strain

  গ

  true fracture stress

  ঘ

  coefficient of thermal expansion
• The Coffin-Manson relation is described as ________________ where Δεp = the plastic strain amplitude ε’f = fatigue ductility coefficient 2N = number of strain reversal to failure c = fatigue ductility exponent
  ক

  Δεp/2=ε’f (2N)c

  খ

  Δεp=ε’f (2N)c

  গ

  Δεp/2=ε’f (N)c

  ঘ

  Δεp=ε’f (N)c
• The Coffin-Manson relation is used to describe the ____________________
  ক

  high cycle fatigue

  খ

  low cycle fatigue

  গ

  stress-strain relation

  ঘ

  stress-strain cycle relation
• The following figure represents the hysteresis loop for cycle softening of the material.
  ক

  True

  খ

  False
• Which of the following is the strain-controlled cycle fatigue in which the strain amplitude is kept constant during fatigue process?
  ক

  Car wheel

  খ

  Crankshaft

  গ

  Thermal expansion and contraction of component

  ঘ

  Dial meter