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MCQs

Total Questions : 936 | Page 7 of 94 pages
Question 61. The material which can be best cut with oxygen cutting process is
  1.    Mild steel
  2.    Brass
  3.    Copper
  4.    Aluminium
 Discuss Question
Answer: Option A. -> Mild steel
Question 62. During hot working of metals
  1.    Porosity of the metal is largely eliminated
  2.    Grain structure of the metal is refined
  3.    Mechanical properties are improved due to refinement of grains
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 63. The temperature of oxy-hydrogen flame is ________ oxyacetylene flame.
  1.    Same as
  2.    Less than
  3.    More than
  4.    None of these
 Discuss Question
Answer: Option B. -> Less than
Question 64. The brass and bronze are welded by _________ flame.
  1.    Neutral
  2.    Oxidizing
  3.    Carburising
  4.    All of these
 Discuss Question
Answer: Option B. -> Oxidizing
Question 65. A gimlet is a ________ tool.
  1.    Boring
  2.    Marking
  3.    Cutting
  4.    None of these
 Discuss Question
Answer: Option A. -> Boring
Question 66. In TIG arc welding, the welding zone is shielded by an atmosphere of
  1.    Helium gas
  2.    Argon gas
  3.    Either (A) or (B)
  4.    None of these
 Discuss Question
Answer: Option C. -> Either (A) or (B)
Question 67. In sheet metal blanking, shear is provided on punches and dies so that
  1.    Press load is reduced
  2.    Good cut edge is obtained
  3.    Warping of sheet is minimized
  4.    Cut blanks is straight
 Discuss Question
Answer: Option A. -> Press load is reduced
Question 68. For obtaining a cup of diameter 25 mm and height 15 mm by drawing, the size of the round blank should be approximately
  1.    42 mm
  2.    44 mm
  3.    46 mm
  4.    48 mm
 Discuss Question
Answer: Option C. -> 46 mm
Question 69. Scribing block is used to
  1.    Hold the round bars during marking
  2.    Check the trueness of flat surfaces
  3.    Locate the centres of round bars
  4.    Check the surface roughness
 Discuss Question
Answer: Option B. -> Check the trueness of flat surfaces
Question 70. The cutting edge of a chisel should be
  1.    Hardened
  2.    Tempered
  3.    Hardened and tempered
  4.    Case hardened
 Discuss Question
Answer: Option C. -> Hardened and tempered

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