Metrology and Surface Engineering Mid - II, November - 2014

1.Errors in geometrical form are detected by _______________ comparator
  • mechanical
  • electrical
  • pneumatic
  • optical
Answer: A
2.________________ comparators are cheaper compared to other types of comparators
  • mechanical
  • electrical
  • pneumatic
  • optical
Answer: A
3.Pneumatic comparator converts surface displacements into changes in ___________ of air
  • velocity
  • pressure
  • both a or b
  • None of these
Answer: B
4.The angle included between the flanks of the thread, measured in axial plane is called as
  • flank angle
  • root angle
  • crest angle
  • thread angle
Answer: D
5.The effective diameter of the screw thread can be found by
  • screw thread micrometer method
  • two wire method
  • three wire method
  • all of these
Answer: D
6._________________ treatments are given to medium carbon steels and cast irons to improve the surface properties without actually adding any element to the surface
  • Chemical
  • Mechanical
  • Thermal
  • Any of these
Answer: C
7.Induction hardening is an example of ___________________ treatment
  • Chemical
  • Mechanical
  • Thermal
  • None of these
Answer: C
8.Commonly used high-energy processes for surface treatment are
  • electron beam treatment
  • ion implantation
  • laser beam treatment
  • all of these
Answer: D
9.The process, which involves deposition without any current applied is called as
  • autocatalytic plating
  • electroplating
  • hard facing
  • none of these
Answer: A
10.The coating, in which element carbon is added to the surface of the steel is called as
  • cyaniding
  • carburising
  • nitriding
  • none of these
Answer: B
11.The indicating unit working on pneumatic principle is provided on ___________________ comparator.
Answer: Pneumatic
12.________________ are used to indicate positional errors of surfaces.
Answer: Dial indicators
13.The functions of _________________ is either to transmit force and motion or to act as a fastener.
Answer: Screw thread
14.__________________ micrometer can be used to measure major and minor diameter of screw threads
Answer: Floating carriage
15._______________ is an error similar to periodic error, but repeating once per turn of the thread
Answer: Drunkenness
16.______________________ treatments intend to relieve thermal stresses built up in the heat treatments through vibrations
Answer: Vibration
17.Surface treatment improves resistance to _______________
Answer: Wear
18.___________________ consists of immersing the workpiece in an acid bath
Answer: Anodising
19.Lacquers form a ____________________ on the surface by evaporation of a solvent
Answer: Film
20.In cyaniding process of surface treatment _________________, _______________ are the elements used to treat the surface.
Answer: Carbon, Nitrozen