1) Describe the milling machine mechanism with a neat sketch in detail. Discuss Whitworth quick return mechanism of the shaper in detail. describe the different Planer mechanism, describe in brief. Describe what is broaching? How is broaching operations carried out? What are the benefits and drawbacks of broaching? describe what is centre less grinding? describe the grinding operations. Specify the attributes of oxidizing and neutralizing flame?
2) Specify any three welding defects. describe the inputs given to the GMAW welding? Specify three power sources that are used in arc welding processes. describe the kinds of resistance butt welding? Specify any three applications of the resistance welding processes. Describe how much of voltage is needed to generate the electron beam in EBW? Describe the friction welding process. State any three kinds of weld cracking. Specify two safety measures in the radiography testing.
3) describe the feature of oxidizing flame, neutral flame and carburizing flame? State type of oxy-acetylene flame must be used for the welding of high carbon steel and carbon base metals? describe the single and two stage regulators with a neat sketch. Describe the set up and the principle of operation of submerged arc welding with neat sketch. Describe the set up and the principle of operation of electro gas welding with neat sketch.