Q.1
Which of the following parts of castings are mostly salvaged with defective cast cooling bumps?
  • a) Piston
  • b) Cylinder
  • c) Connecting rods
  • d) Gas turbine parts
Q.2
In salvaging of castings, cooling fluid used can be directly exposed to the hot castings to enhance heat transfer.
  • a) True
  • b) False
Q.3
A metallic powder is basically used as a coating for the heat transfer enhancement.
  • a) True
  • b) False
Q.4
Which of the following types of inspection is mostly used for the identification of cast bumps on the castings?
  • a) Radiography
  • b) Eddy current method
  • c) Visual inspection
  • d) Dimensional inspection
Q.5
In salvaging process, the metallic particles used for enhancing heat transfer may stick to the surface areas of casting by melting itself.
  • a) True
  • b) False
Q.6
In electric arc wire spray process, the atomizing air pressure is the only significant variable for controlling the surface layers.
  • a) True
  • b) False
Q.7
In salvaging of castings, the metallic powder coating can improve the heat transfer by_____
  • a) 5-10%
  • b) 10-30%
  • c) 30-50%
  • d) 100%
Q.8
Without knowing the conditions or details about the castings, salvaging can even destroy or damage the whole casting.
  • a) True
  • b) False
Q.9
By using electric arc wire spray process, salvaging of white cast iron becomes very easy.
  • a) True
  • b) False
Q.10
In electric arc wire spray process, preheating of metal before welding is mainly done to prevent surface cracking.
  • a) True
  • b) False
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