B.TECH - Semester 4 manufacturing process Question Paper 2020 (sep)
Practice authentic previous year university questions for better exam preparation.
Sample Questions
- (a) Explain the thread rolling process with a schematic illustration.
- (b) How do you compare forged components with cast components?
- What is the use of core in casting?
- Discuss various properties of moulding sand.
- List the various types of allowances which are usually provided in a pattern
- What is a continuous casting?
- What are the objects of sintering?
- Differentiate between hot and cold rolling.
- How are forging process classified?
- Describe briefly the forging defects.
- What is the function of flux in gas welding?
- What is the difference between shielded and unshielded arc welding process? $$ \text { ( } 10 \times 2=20 \text { Marks) } $$ ## (Each question carries 20 marks)
- (a) Explain the basic rules for good casting design.
- (b) What are the various test conducted to check the quality of moulding sand?
- (a) What are the different components required in a gating system?
- (b) What are chills in casting? Explain briefly.
- (a) Explain the principle of centrifugal casting process.
- (b) What are the defects occurred in casting process.
- (a) State the advantages and limitations of powder metallurgy.
- (b) Explain the compacting process in powder metallurgy.
- (a) Explain different types of extrusion process with neat sketches.
- (b) Differentiate between drop forging and press forging. 2 K-4256
- (a) Explain briefly (i) friction welding (ii) explosive welding
- (b) Differentiate between pressure welding and fusion welding.
- (a) Explain the effect of welding on grain size of metal.
- (b) How are welded joints tested? ( $\mathbf{4} \boldsymbol{\times} \mathbf{2 0} \boldsymbol{=} \mathbf{8 0}$ Marks)
- With the help of sketches, explain the different types of gates used in sand moulding.
- Explain the properties of good moulding sand.
- Why is it important to make vent holes in the mold?
- How do porosity and slag inclusions occur in welding?
- What do you understand by straight polarity? When is the straight polarity used for arc welding?
- Describe different types of flames used in gas welding along with their application.
- Define cold working of metals. Give some examples.
- What are the defects in forging operations?
- What do you mean by direct extrusion?
- What are the objectives of compacting operation in powder metallurgy? ( $\mathbf{1 0} \boldsymbol{\times} \mathbf{4} \boldsymbol{=} \mathbf{4 0}$ Marks) P.T.O. Answer any one full questions from each Module.
- (a) Explain the core making process.
- (b) What are the different types of patterns used in sand casting?
- (a) Illustrate and describe the shell molding process.
- (b) Explain gating ratio. What is the significance of pressurized gating system.
- (a) What is the principle of resistance welding? Explain any two resistance welding processes.
- (b) With the help of a schematic diagram explain the ultrasonic welding process.
- (a) What is electron beam welding? What are its limitations?
- (b) Explain any three welding defects, their causes and remedies.
- (a) Describe with a neat sketch the working of a hydraulic press.
- (b) Describe the process of metal spinning. OR 2
- (a) Give the different configurations of rolling mills and explain their applications.
- (b) Explain the process of rotary swaging. $$ (3 \times 20=60 \text { Marks }) $$