Fatigue Test MCQ

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

• The fatigue limit of steel is around ____ times the ultimate tensile strength.
  ক

  0.3

  খ

  5

  গ

  3

  ঘ

  0.5
• The fatigue limit of a specimen is ___________ of its fatigue range.
  ক

  triple

  খ

  double

  গ

  half

  ঘ

  exactly the same
• Materials that have been subjected to heat treatment generally have lower tensile strengths than materials that are annealed.
  ক

  True

  খ

  False
• Corrosion of materials results in ___________ of fatigue limit.
  ক

  reduction

  খ

  increment

  গ

  double

  ঘ

  satisfaction
• The specimen of fatigue testing must not have ___________
  ক

  Uniform cross-section

  খ

  Metal

  গ

  Certain colours

  ঘ

  Notches and holes
• What is the diameter of a typical specimen used in fatigue testing?
  ক

  2000 inches

  খ

  0.0005 inches

  গ

  1 inch

  ঘ

  26 inches
• What is the typical speed of rotation in a normal speed fatigue testing machine?
  ক

  2000 rpm

  খ

  20 rpm

  গ

  26,000 rpm

  ঘ

  14,000 rpm
• The amount of test cycles required to find out the fatigue stress of hard aluminium alloys is ____________
  ক

  64,000,900,000

  খ

  500,000,000

  গ

  3000

  ঘ

  27
• Which of the following is a fatigue-testing apparatus?
  ক

  Rotating-beam tests

  খ

  Load test

  গ

  Fixed load test

  ঘ

  Rotating wing test
• The amount of test cycles required to find out the fatigue stress of hard steels is ___________
  ক

  10,000,000

  খ

  2600

  গ

  26

  ঘ

  2,000,000
• Testing a material to know it’s fatigue strength is very easy.
  ক

  True

  খ

  False
• What is fatigue stress?
  ক

  The stress endured by an observer

  খ

  Stress divided by strain and multiplied by conductivity

  গ

  The amount of stress, a material can tolerate repeatedly without failure

  ঘ

  The stress endured perpendicular to the observer
• Nylon has a linear S-N curve.
  ক

  True

  খ

  False
• Endurance limit has unit Kgf.
  ক

  True

  খ

  False
• Magnitude of compressive stress on the fatigue test specimen is ___ tensile stress magnitude.
  ক

  Equal to

  খ

  Greater than

  গ

  Lesser than

  ঘ

  Changes with weight
• What is the relation between stress at the tension side and diameter of the fatigue test specimen?
  ক

  σt α d

  খ

  σt α d2

  গ

  σt α 1/d2

  ঘ

  σt α 1/d3
• What cycles range is chosen for endurance limit?
  ক

  102 – 103

  খ

  105 – 106

  গ

  107 – 108

  ঘ

  1011 – 1012
• What is the reason for fatigue failure?
  ক

  Movement of Dislocations

  খ

  Submicroscopic cracks

  গ

  Dynamic recovery

  ঘ

  Vacancy coalescence
• Which of the following show a fatigue limit?
  ক

  Titanium

  খ

  Cast iron

  গ

  Magnesium

  ঘ

  Al-Mg alloys
• Which ferrous material doesn’t show fatigue limit?
  ক

  Cast iron

  খ

  Wrought iron

  গ

  Austenitic stainless steel

  ঘ

  Low carbon steel
• Word “endurance limit” is used for _____________
  ক

  Plastics

  খ

  Ferrous materials

  গ

  Nonferrous materials

  ঘ

  Alloys
• What term is used for the maximum stress at which material fail on a specified number of cycle?
  ক

  Fatigue strength

  খ

  Fatigue life

  গ

  Ultimate tensile strength

  ঘ

  Endurance limit
• Fatigue curves are popularly known as __________ curves.
  ক

  S

  খ

  R

  গ

  N

  ঘ

  S-N
• In what terms, fatigue life is measured?
  ক

  Time of failures

  খ

  Number of cycles of failure

  গ

  Stress of failure

  ঘ

  Appearance of fracture