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Total Questions : 936 | Page 4 of 94 pages
Question 31. Rotary swaging
  1.    Is extensively used for making bolts and rivets
  2.    Is used for reducing the diameters of round bars and a tube by rotating dies which open and close rapidly on the work
  3.    Is used to improve fatigue resistance of the metal by setting up compressive stresses in its surface
  4.    Consists of pressing the metal inside a chamber to force it out by high pressure through an orifice which is shaped to provide the desired form of the finished part
 Discuss Question
Answer: Option B. -> Is used for reducing the diameters of round bars and a tube by rotating dies which open and close rapidly on the work
Question 32. When a pattern is made in three parts, the top part, is known as a
  1.    Drag
  2.    Cheek
  3.    Cope
  4.    None of these
 Discuss Question
Answer: Option C. -> Cope
Question 33. An oxidising process used for aluminium and magnesium articles is called
  1.    Galvanizing
  2.    Anodizing
  3.    Parkerising
  4.    Sherardizing
 Discuss Question
Answer: Option B. -> Anodizing
Question 34. Cast iron and steel pipes are produced by
  1.    Slush casting
  2.    Investment casting
  3.    True centrifugal casting
  4.    Die casting
 Discuss Question
Answer: Option C. -> True centrifugal casting
Question 35. Which of the following methods can be used for manufacturing 2 meter long seamless metallic tubes?
  1.    Drawing
  2.    Extrusion
  3.    Rolling
  4.    Extrusion and rolling
 Discuss Question
Answer: Option D. -> Extrusion and rolling
Question 36. In arc welding, the temperature of heat produced by the electric arc is of the order of
  1.    3000°C to 4000°C
  2.    4000°C to 5000°C
  3.    5000°C to 6000°C
  4.    6000°C to 7000°C
 Discuss Question
Answer: Option D. -> 6000°C to 7000°C
Question 37. The adhesiveness is the property of sand due to which
  1.    It evolves a great amount of steam and other gases
  2.    The sand grains stick together
  3.    It clings to the sides of a moulding box
  4.    None of these
 Discuss Question
Answer: Option C. -> It clings to the sides of a moulding box
Question 38. Seam welding is a
  1.    Continuous spot welding process
  2.    Multi-spot welding process
  3.    Arc welding process
  4.    Process used for joining round bars
 Discuss Question
Answer: Option A. -> Continuous spot welding process
Question 39. The metal extrusion process is generally used for producing
  1.    Uniform solid sections
  2.    Uniform hollow sections
  3.    Uniform solid and hollow sections
  4.    Varying solid and hollow sections
 Discuss Question
Answer: Option C. -> Uniform solid and hollow sections
Question 40. The flux commonly used in brazing is
  1.    Zinc chloride
  2.    Ammonium chloride
  3.    Resin plus alcohol
  4.    Borax
 Discuss Question
Answer: Option D. -> Borax

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