MU Production Process - 1 - December 2011 Exam Question Paper

MU Mechanical Engineering (Semester 3)
Production Process - 1
December 2011

Total marks: --
Total time: --

INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary

1 (a) Compare Ferrous and Non-ferrous metals.

4 M

1 (b) Distinguish clearly between the Patterns and Core boxes.

4 M

1 (c) Define "cutting speed and feed" in case of drilling operation.

4 M

1 (d) How are Milling Machines classified with a neat sketch? Describe any one Milling Machine.

8 M

2 (a) Find out train of gears if 20 TPI are to be cut on a lathe machine having a level screw of 4 TPI.

8 M

2 (b) What are the functions of a speed shaft and lead screw in a centre lathe?

6 M

2 (c) List various methods to taper turning on a centre lathe. Explain the method of the tail stock offsetting to get the taper.

6 M

3 (a) Explain centreless grinding operation.

6 M

3 (b) Explain working of a dividing head of a Milling Machine with suitable numerical example.

10 M

3 (c) Differentiate between reaming and counter boring operation on drilling machine.

4 M

4 (a) Why Risers are used? Sketch different types of Risers and Mention in which situations they are used?

8 M

4 (b) Explain the identification; causes and remedial measures of the following casting defects -
(i) Scab
(ii) Blow Holes
(iii) Shrinkage Cavities
(iv) Mismatch

8 M

4 (c) State the use of following accessories of lathe -
(i) Mandrel
(ii) Face-plate
(iii) Follower rest
(iv) Collet

4 M

5 (a) With neat sketch explain submerged are welding process its advantages and limitations.

8 M

5 (b) Discuss Electro-slag welding process.

8 M

5 (c) What are the important elements used in making High speed steels single point cutting tool ? How different percentages of such elements affect the machining?

4 M

6 (a) Explain in details Plasma Arc Machining (PAM)

6 M

6 (b) Compare EDM and ECM in details.

8 M

6 (c) Explain advantages and disadvantages of powder metallurgy.

6 M

Write the explanatory notes on any four of the following -

7 (a) Different Types of Gates

5 M

7 (b) Stub Welding

5 M

7 (c) Brazing and Soldering

5 M

7 (d) Sintering Process in Powder Matallurgy

5 M

7 (e) Metal Spraying

5 M

7 (f) Centre Lathe and Capstan Lathe.

5 M

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