Production Process - 1 - May 2015

Mechanical Engineering (Semester 3)

TOTAL MARKS: 80
TOTAL TIME: 3 HOURS (1) Question 1 is compulsory.
(2) Attempt any three from the remaining questions.
(3) Assume data if required.
(4) Figures to the right indicate full marks.

1 (a) Explain Pattern allowances. (5 marks)

1 (b) Explain Rolling defects. (5 marks)

1 (c) Define the following terms used in welding.
i) Welded Joint
ii) Overhead welding
iii) Edge prearation
iv) Slag
v) Flux (5 marks)

1 (d) How is a rod male by extrusion? (5 marks)

Differentiate the following:

2 (a) (i) Patterns and core boxes. (5 marks)

2 (a) (ii) Wing core and Hanging type of cores. (5 marks)

Write short notes on:

2 (b) (i) Pattern allowances (5 marks)

2 (b) (ii) Types of cores (5 marks)

3 (a) Explain planetary and cluster rolling mills with neat sketches. (5 marks)

3 (b) Explain rotary swaging with its sketch? (10 marks)

3 (b) Write short note on: Metal Extrusion. (5 marks)

4 (a) Compare TLG and MIG welding Processes? (10 marks)

4 (b) Discuss laser beam welong along with its advantages and disadvantages. (10 marks)

5 (a) How are porous bearings Manufactured? List the a advantages and applications of such bearings. (10 marks)

5 (b) Explain advantages and disadvantages powder Metallurgy. (5 marks)

5 (c) Write the explanatory note on: sintering process in Powder Metallurgy? (5 marks)

6 (a) List the different NDT methods? Explain ultrasonic process Method of inspection? (8 marks)

6 (b) Explain with neat sketch. "Radiographic No-Destructive test:" (5 marks)

6 (c) What are the important properties of plastics from engineering point of view? (7 marks)