Define welding.
[3 marks]Compare welding with riveting.
[4 marks]Write principle of arc welding and explain edge preparation in detail.
[7 marks]What do you mean by polarity in welding?
[3 marks]Differentiate between straight and reverse polarity.
[4 marks]Explain welding distortion.
[7 marks]Explain welding defects.
What is solid state welding?
[3 marks]Brief the process of arc ignition.
[4 marks]Explain atomic hydrogen welding in detail.
[7 marks]Define arc.
[3 marks]Classify welding electrode as per American standard.
[4 marks]Explain friction welding in detail.
[7 marks]What is oxy acetylene gas welding?
[3 marks]Draw different types of gas welding flames.
[4 marks]Explain left ward technique for gas welding.
[7 marks]What is inert gas welding?
[3 marks]Explain role of high frequency unit in TIG welding.
[4 marks]Explain metal inert gas welding in detail.
[7 marks]What is non destructive testing?
[3 marks]What is principle of magnetic particle test?
[4 marks]Draw neat sketch of standard location of welding symbol.
[7 marks]What is pre weld and post weld heat treatment?
[3 marks]What is principle of radio graphy test?
[4 marks]Draw different weld joints.
[7 marks]