Jawaharlal Nehru Technological University Hyderabad B.Tech III MANUFACTURING PROCESS AND MACHINE TOOLS Previous Question Paper (May/June - 2019 - R16)

Explain the selection criteria for manufacturing processes.

Why tungsten is preferred the material for non-consumable electrodes?

What are the four major drawbacks of hot working?

What are the types of rolling mills?

Enumerate various defects encountered in extrusion process.

Explain working principle of Smith forging.

Why negative rake angle is normally employed for cutting hard and strong materials?

Enumerate various types of cutting fluids using in machining operations.

Explain the principle of milling machine.

Write about various advantage and limitations of honing and lapping.

Describe the various stages involved in the contraction of metals during casting.

Briefly describe the principle, working and applications of laser beam welding.

Briefly discuss the various constituents of moulding sand giving their role in the moulding operation.

Differentiate between destructive and non-destructive welding. Explain any one method of non-destructive testing in detail.

Describe recovery, recrystallization and grain growth phenomena in metal working process.

Distinguish between blanking and piercing. How do you estimate the cutting forces in blanking and piercing?

Compare the properties of cold worked and hot worked parts in detail?

What are the various ways in which presses can be classified? What are the advantages of mechanical press over hydraulic press?

List out the four common defects which occur in forging operation and discuss the causes and their remedies.

What is Extrusion? Explain the various factors which affect the performance of extrusion process.

How direct extrusion differs from indirect extrusion. Give their relative merits and demerits?

Classify the methods of forging. Explain in detail any one of them.

Draw the Merchant’s force diagram. State the assumptions made in the development of such a diagram.

Explain what is meant by a Taper and discuss in detail the taper turning by compound rest swelling method?

What is the difference between capstan lathe and Turret lathe? Explain with the help of neat sketches.

Explain in detail the Quick return mechanism of ram in shaper with neat sketch.

Differentiate between up milling and down milling and explain their applications.

What are surface grinding machine, explain various surface grinding machines.

With the help of neat sketch explain the geometry of milling cutter in detail.

What are the various factors to be considered in selection of grinding wheel? Discuss each in detail.