1) Specify two metals having re-crystallisation temperature below theroom temperature.
2) Specify the difference between the blanking and the piercing.
3) Specify the use of the carburising flame?
4) State the various welding defects possible.
5) describe the term gating system?
6) Specify the difference between the hot chamber die casting and cold chamber die casting processes?
7) State two electrolytes that are used in electrochemical machining.
8) Specify the purpose of the dielectric fluid EDM.
9) Briefly describe the meaning of CAD.
10) prepare down the difference between the NC and the CNC.