Production Technology

(b) Describe the various steps in friction welding with neat sketches.

(e) Write short note on use of chaplet, chill and padding.

(d) Compare forging and casting process.

(c) Write short notes on welding defects inclusion and inadequate fusion.

(b) What is the gating ratio? Explain.

(a) Why testing of moulding sand is necessary? Discuss any one sand testing methods with proper diagrams.

(b) Distinguish between wire drawing and deep drawing with sketches.

(a) Explain briefly with neat sketches, direct and indirect extrusion process. 

(b) Distinguish between power and drop forging with sketches.

(a) Describe the principle of hot and cold working processes. Compare them. 

(a) What are the different types of allowances? Discuss them with neat sketch.

(a) Explain the merits, limitations and application of Electron beam welding,

(b) Explain the TIG and MIG types of welding. Give the applications of each. 

(a) Differentiate leftward and rightward welding technique.

Draw a neat sketch of cupola, indicating its various zones and describe its operation, different zones and their functions.

(b) What are electric furnaces? Where they are used?

(a) What is the design criteria of pouring basin? Explain the term pouring temperature and pouring time. 

(b) Explain the shell moulding process. Also write short note on flask less moulding.

(a) What is core Describe the different types of cores used.

(b) Which properties are desirable for moulding sand for sound casting ? Explain.