Q.1
Which of the following additive is added to improve the tool life of steel parts?
  • a) Copper
  • b) Bismuth
  • c) Lead
  • d) Sulphur
Q.2
What is added to brass to improve the machining of parts made by brass?
  • a) Copper
  • b) Lead
  • c) Bismuth
  • d) Tin
Q.3
Which kind of porosity leads to longer tool life?
  • a) Very high
  • b) Very low
  • c) Either very high or very low
  • d) Moderate
Q.4
Which of the following tool control systems is now widely used?
  • a) Multi-axis computer-controlled tool control system
  • b) Multi-lines computer-controlled tool control system
  • c) Multi-plane computer-controlled tool control system
  • d) Multi-surface computer-controlled tool control system
Q.5
Which of the following process is used for removing any ‘rag’ on edges?
  • a) Derigging
  • b) Defragging
  • c) Deluding
  • d) Deburring
Q.6
Which of the following metal joining process is not applicable for P/M parts?
  • a) GTAW
  • b) Extrusion welding
  • c) Friction welding
  • d) Laser beam welding
Q.7
Electrical resistance welding is preferred over oxyacetylene and arc welding for joining P/M parts.
  • a) True
  • b) False
Q.8
Porous parts must be resin impregnated before plating.
  • a) True
  • b) False
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