Salvaging Techniques MCQ

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

• In electric arc wire spray process, preheating of metal before welding is mainly done to prevent surface cracking.
  ক

  True

  খ

  False
• By using electric arc wire spray process, salvaging of white cast iron becomes very easy.
  ক

  True

  খ

  False
• Without knowing the conditions or details about the castings, salvaging can even destroy or damage the whole casting.
  ক

  True

  খ

  False
• In salvaging of castings, the metallic powder coating can improve the heat transfer by_____
  ক

  5-10%

  খ

  10-30%

  গ

  30-50%

  ঘ

  100%
• In electric arc wire spray process, the atomizing air pressure is the only significant variable for controlling the surface layers.
  ক

  True

  খ

  False
• In salvaging process, the metallic particles used for enhancing heat transfer may stick to the surface areas of casting by melting itself.
  ক

  True

  খ

  False
• Which of the following types of inspection is mostly used for the identification of cast bumps on the castings?
  ক

  Radiography

  খ

  Eddy current method

  গ

  Visual inspection

  ঘ

  Dimensional inspection
• A metallic powder is basically used as a coating for the heat transfer enhancement.
  ক

  True

  খ

  False
• In salvaging of castings, cooling fluid used can be directly exposed to the hot castings to enhance heat transfer.
  ক

  True

  খ

  False
• Which of the following parts of castings are mostly salvaged with defective cast cooling bumps?
  ক

  Piston

  খ

  Cylinder

  গ

  Connecting rods

  ঘ

  Gas turbine parts
• Filling can be used for non-ferrous alloys.
  ক

  True

  খ

  False
• Salvaging through welding is mainly focused on high alloy steels.
  ক

  True

  খ

  False
• For what time is a cast kept immersed in sodium silicate solution for salvaging?
  ক

  1 hour to 3 hours

  খ

  2 hours to 4 hours

  গ

  3 hours to 5 hours

  ঘ

  4 hours to 6 hours
• At what temperature, is sodium silicate immersed in the cast for salvaging?
  ক

  125°F

  খ

  175°F

  গ

  225°F

  ঘ

  275°F
• Which of the following is not an impregnant?
  ক

  Linseed oil

  খ

  Sodium silicate

  গ

  Silicon carbide

  ঘ

  Synthetic resin
• Below what temperature does a solder melt?
  ক

  500°F

  খ

  600°F

  গ

  700°F

  ঘ

  800°F
• Which of the following is not an important property in terms of filler metals?
  ক

  Thermal resistance

  খ

  Chemical resistance

  গ

  Corrosion resistance

  ঘ

  Appearance
• Which of the following method is most suited for salvaging?
  ক

  Brazing

  খ

  Welding

  গ

  Caulking

  ঘ

  Plugging
• Which of the following is not a method of preparation of defective areas?
  ক

  Chipping

  খ

  Grinding

  গ

  Rolling

  ঘ

  Gouging
• Which of the following welding method is not used for salvaging?
  ক

  TIG welding

  খ

  MIG welding

  গ

  Gas welding

  ঘ

  Oxy-hydrogen welding