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MCQs

Total Questions : 936 | Page 3 of 94 pages
Question 21. The increase in hardness due to cold working, is called
  1.    Age hardening
  2.    Work hardening
  3.    Induction hardening
  4.    Flame hardening
 Discuss Question
Answer: Option B. -> Work hardening
Question 22. A mortise gauge is a
  1.    Striking tool
  2.    Planing tool
  3.    Boring tool
  4.    Marking tool
 Discuss Question
Answer: Option D. -> Marking tool
Question 23. In electric resistance welding, pressure applied varies from
  1.    1 to 5 MPa
  2.    5 to 10 MPa
  3.    10 to 25 MPa
  4.    25 to 55 MPa
 Discuss Question
Answer: Option D. -> 25 to 55 MPa
Question 24. A zinc diffusion process is called
  1.    Galvanizing
  2.    Anodizing
  3.    Parkerising
  4.    Sherardizing
 Discuss Question
Answer: Option D. -> Sherardizing
Question 25. The sand used for making cores is
  1.    Green sand
  2.    Dry sand
  3.    Loam sand
  4.    Oil sand
 Discuss Question
Answer: Option D. -> Oil sand
Question 26. The property of sand due to which it evolves a great amount of steam and other gases is called
  1.    Collapsibility
  2.    Permeability
  3.    Cohesiveness
  4.    Adhesiveness
 Discuss Question
Answer: Option B. -> Permeability
Question 27. Piercing is an operation of cutting
  1.    A cylindrical hole in a sheet of metal by the punch and the die
  2.    A hole (other than cylindrical) in a sheet of metal by the punch and the die
  3.    A flat sheet to the desired shape
  4.    A number of holes evenly spaced in a regular pattern on a sheet of metal
 Discuss Question
Answer: Option B. -> A hole (other than cylindrical) in a sheet of metal by the punch and the die
Question 28. For gas welding, the pressure desired at the welding torch for oxygen is
  1.    7 to 103 kN/m²
  2.    70 to 280 kN/m²
  3.    280 to 560 kN/m²
  4.    560 to 840 kN/m²
 Discuss Question
Answer: Option B. -> 70 to 280 kN/m²
Question 29. Aluminium is the best material for making patterns because it is
  1.    Light in weight
  2.    Easy to work
  3.    Corrosion resistant
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Question 30. In submerged arc welding, an arc is produced between a
  1.    Carbon electrode and the work
  2.    Metal electrode and the work
  3.    Bare metal electrode and the work
  4.    Two tungsten electrodes and the work
 Discuss Question
Answer: Option C. -> Bare metal electrode and the work

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