Problem and Defects in Rolled Products MCQ

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

• The velocity of the sheet in the rolling machine keeps on increasing from entering to exit from the rolls.
  ক

  True

  খ

  False
• A sheet with an initial thickness 30 mm is rolled in two high mills with entering velocity of 5 mm/sec. Find the final thickness of sheet if the exit velocity of rolled sheet is 25 mm/sec?
  ক

  6mm

  খ

  5 mm

  গ

  1 mm

  ঘ

  2.5 mm
• A sheet with an initial thickness 30 mm is rolled in two high mills with entering velocity of 5 mm/sec. If the final thickness of sheet is 15 mm find the exit velocity of rolled sheet?
  ক

  5mm/sec

  খ

  25mm/sec

  গ

  10mm/sec

  ঘ

  100mm/sec
• The passing of the rolled material through the square of oval-shaped cavity reduces the anisotropy of final material.
  ক

  True

  খ

  False
• The temper rolling or skin pass rolling is used to ___________
  ক

  improve surface finish

  খ

  eliminate the yield point phenomena

  গ

  improve fatigue strength

  ঘ

  refine the grain
• An ingot of 30mm thickness needs to reduce into sheet for further application. The best possible method to perform this task is _______
  ক

  hot rolling

  খ

  cold rolling

  গ

  extrusion

  ঘ

  compact extrusion
• In the given diagram, the sheet of thickness h1 is reduced to thickness h2. Find the correct relation between the velocity of the sheet? Where v1 is entering velocity and v2 is exiting velocity. Assuming the width of the sheet is constant.
  ক

  v1=v2

  খ

  v1>v2

  গ

  v1<v2

  ঘ

  no relation exists
• Which of the following mill action is like more of forging than the rolling of the metal?
  ক

  Two high mill

  খ

  Cluster mill

  গ

  Planetary mill

  ঘ

  Sendzimir mill
• Find the total number of rolls involved in 2 high four stand rolling mill?
  ক

  2

  খ

  4

  গ

  8

  ঘ

  16
• The significant advantage of using smaller rolls in the machine is that __________
  ক

  maximum possible reduction increases

  খ

  power consumption reduces

  গ

  the surface finish of the rolled product improves

  ঘ

  the problem of roll flattening can be eliminated