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MCQs

Total Questions : 936 | Page 88 of 94 pages
Question 871. Thermit welding is often used in
  1.    Repairing broken shears
  2.    Replacing broken gear teeth
  3.    All of these
  4.    Joining rails, truck frames and locomotive frames etc.
 Discuss Question
Answer: Option C. -> All of these
Question 872. The purpose of a riser is to
  1.    Act as a reservoir for the molten metal
  2.    Deliver the molten metal from pouring basin to gate
  3.    Deliver molten metal into the mould cavity
  4.    Feed the molten metal to the casting in order to compensate for the shrinkage
 Discuss Question
Answer: Option D. -> Feed the molten metal to the casting in order to compensate for the shrinkage
Question 873. Which of the following material can be used for making patterns?
  1.    Wax
  2.    All of these
  3.    Aluminium
  4.    Lead
 Discuss Question
Answer: Option B. -> All of these
Question 874. Thread rolling is restricted to
  1.    Ductile materials
  2.    Ferrous materials
  3.    None of these
  4.    Hard materials
 Discuss Question
Answer: Option A. -> Ductile materials
Question 875. When a pattern is made in three parts, the ________ is known as a drag.
  1.    None of these
  2.    Bottom part
  3.    Middle part
  4.    Top part
 Discuss Question
Answer: Option B. -> Bottom part
Question 876. Which of the following welding method uses a pool of molten metal?
  1.    Carbon arc welding
  2.    Submerged arc welding
  3.    TIG arc welding
  4.    MIG arc welding
 Discuss Question
Answer: Option B. -> Submerged arc welding
Question 877. A casting defect which occurs due to improper venting of sand is known as
  1.    Shift
  2.    Swell
  3.    Blow holes
  4.    Cold shuts
 Discuss Question
Answer: Option C. -> Blow holes
Question 878. A hacksaw blade is specified by its
  1.    Material
  2.    Width
  3.    Number of teeth
  4.    Length
 Discuss Question
Answer: Option D. -> Length
Question 879. The welding process used in joining mild steel shanks to high speed drills, is
  1.    Upset butt welding
  2.    Seam welding
  3.    Flash butt welding
  4.    Spot welding
 Discuss Question
Answer: Option C. -> Flash butt welding
Question 880. Which one of the following material will require the largest size of riser for the same size of casting?
  1.    Aluminium
  2.    Steel
  3.    Cast iron
  4.    Copper
 Discuss Question
Answer: Option B. -> Steel

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