Burger Vector & the Dislocation Loop MCQ

Test your knowledge with important Burger Vector & the Dislocation Loop MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Burger Vector & the Dislocation Loop MCQs at Bissoy

• Determine whether dislocation reaction is feasible or not? b1 = b2+ b3 a/6->a/6+a/6
  ক

  ->a/6+a/6 ] Reaction is not balanced and not feasible

  খ

  0 1 1

  গ

  0 1 1

  ঘ

  0 1 1
• A dislocation with Burger vector b1 will dissociate into two partial dislocations of burger vector b2 and b3 respectively; b1 -> b2 + b3 b1, b2, b3 are magnitude of burger vectors. So the reaction will occur only if __________
  ক

  b1 > b2 + b3

  খ

  b1 > b22 + b32

  গ

  b12 > b22 + b32

  ঘ

  b12 > b2 + b3
• Strain energy of dislocation with burger vector (b) is proportional to ______
  ক

  b

  খ

  is proportional to ______ a) b [ b2

  গ

  b3

  ঘ

  b1/2
• Is it possible to have dislocation with strength larger than the dislocation of unit strength?
  ক

  True

  খ

  False
• A dislocation with burger vector equal to one lattice spacing is said to be a dislocation of __________
  ক

  unit strength

  খ

  perfect edge

  গ

  ideal screw

  ঘ

  universal lattice
• It is possible that the dislocation will end inside the crystal without interacting with free surface or forming dislocation loop.
  ক

  True

  খ

  False
• The Burgers vector b is the vector which defines the magnitude and direction of slip. For a pure edge dislocation, the Burgers vector is perpendicular to the dislocation line, while for a pure screw dislocation, the Burgers vector is parallel to the dislocation line.
  ক

  True

  খ

  False
• Which of the given characterization techniques has the highest resolution?
  ক

  X-ray microscopy

  খ

  Optical microscopy

  গ

  Scanning electron microscopy

  ঘ

  Field ion microscopy
• Which of the following phenomena is not associated with dislocation?
  ক

  Stacking fault

  খ

  Lomer-Cottrell barrier

  গ

  Frank-reed source

  ঘ

  Pourbix curve
• The thickness of the analysis sample used in the Transmission electron microscope is in order of ______
  ক

  meters

  খ

  millimeters

  গ

  micrometers

  ঘ

  nanometres
• The method of detecting dislocations by forming a visible precipitate along the dislocation lines is known as ____________ the small amount of impurity is intensely added to form the precipitate after heat treatment.
  ক

  decoration

  খ

  etching

  গ

  trimming

  ঘ

  dressing
• Etch pit technique of dislocation detection is based on ___________
  ক

  chemical method

  খ

  physical Method

  গ

  mechanical method

  ঘ

  analytical method
• Single Dislocation can be physically seen with ________________
  ক

  optical microscope

  খ

  x-ray diffraction

  গ

  scanning electron microscope

  ঘ

  transmission electron microscope