Jawaharlal Nehru Technological University Hyderabad
Jawaharlal Nehru Technological University Hyderabad B.Tech II MANUFACTURING PROCESS Previous Question Paper (April/May - 2023 - R16)
Note: i) Question paper consists of Part A, Part B. ii) Part A is compulsory, which carries 25 marks. In Part A, Answer all questions. iii) In Part B, Answer any one question from each unit. Each question carries 10 marks and may have a, b as sub questions.
Part A
Write any two essential properties of moulding sand.
Answer
Two essential properties of moulding sand are refractoriness (the ability to withstand high molten metal temperatures without fusing) and permeability (the ability to allow gases and steam to escape through the mould).
What are the functions of riser? Discuss different types of risers.
Answer
The primary functions of a riser are to provide a reservoir of molten metal to compensate for liquid shrinkage during solidification and to facilitate the escape of gases. Risers are classified as top risers (open to the atmosphere at the top of the mould) and side risers (located on the side of the casting). They can also be categorized as blind risers (completely enclosed within the mould) or open risers.
List the types of welded joints.
Answer
Sign in to view the complete answer paper.
List any three advantages of gas welding over arc welding.
Answer
Sign in to view the complete answer paper.
What is soldering.
Answer
Sign in to view the complete answer paper.
What are the causes and remedies of Spatter and Hot inclusions?
Answer
Sign in to view the complete answer paper.
Define the term recrystallization.
Answer
Sign in to view the complete answer paper.
Sketch Planetary rolling mill and Cluster Rolling mill.
Answer
Sign in to view the complete answer paper.
What are the basic equipment used in extrusion process?
Answer
Sign in to view the complete answer paper.
List out the common forging defects.
Answer
Sign in to view the complete answer paper.
Part B
Describe the process of centrifugal casting with neat sketch. Discuss its applications, advantages and limitations.
Answer
Sign in to view the complete answer paper.
Write short notes on solidification in casting process.
Answer
Sign in to view the complete answer paper.
Discuss the casting design considerations.
Answer
Sign in to view the complete answer paper.
Explain the resistance welding process with neat sketch. List out its applications, advantages and limitations.
Answer
Sign in to view the complete answer paper.
Explain the process of forge welding with a neat sketch.
Answer
Sign in to view the complete answer paper.
Explain the process of submerged arc welding with a neat sketch.
Answer
Sign in to view the complete answer paper.
Compare soldering, brazing and welding.
Answer
Sign in to view the complete answer paper.
Explain the principle of explosion welding.
Answer
Sign in to view the complete answer paper.
What are the reasons and effects of Heat affected zone in welding?
Answer
Sign in to view the complete answer paper.
Explain the process of laser welding with a neat sketch.
Answer
Sign in to view the complete answer paper.
Explain the following: a) Wire drawing b) Coining c) Cold spinning.
Answer
Sign in to view the complete answer paper.
Differentiate hot working and cold working processes.
Answer
Sign in to view the complete answer paper.
Sketch and explain different sheet working operations.
Answer
Sign in to view the complete answer paper.
Explain about the Tube drawing.
Answer
Sign in to view the complete answer paper.
What are the advantages and limitations of extrusion process?
Answer
Sign in to view the complete answer paper.
Briefly explain hydrostatic extrusion process with neat sketch.
Answer
Sign in to view the complete answer paper.
List out the different forging operations. Explain drop forging operation with neat sketch.
Answer
Sign in to view the complete answer paper.