Production Process - 1 - May 2013

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 with block diagram ultrasonic machining process. State its basic principles, advantages and applications.(10 marks) 1 (b) Give classification of Manufacturing process and explain manufacturing of cast iron.(10 marks) 2 (a) Explain different methods of taper turning. Explain with diagram taper turning by swindling tail stock.(10 marks) 2 (b) Give the complete classification of grinding machines. Explain internal and external Centreless types of grinder.(10 marks) 3 (a) Explain following principle of -
(i) Gating (ii) Risering design(10 marks) 3 (b) Explain different drilling machining operations with neat sketches.(10 marks) 4 (b) Explain -
(i) Friction welding
(ii) Welding defects(10 marks) 4 (b) Explain different techniques for quality check in casting.(10 marks) 5 (a) What is powder metallurgy? Why gears are manufactured by powder metallurgy? List the advantages of powder metallurgy.(10 marks) 5 (b) Sketch an upright milling machine. State the funcltions of some important parts.(10 marks) 6 (a) Explain rotary swaging with its sketch.(10 marks) 6 (b) Explain any two non-destructive techniques with sketch.(10 marks)

Write short note on (any four) -

7 (a) MIG welding.(5 marks) 7 (b) Resistance welding(5 marks) 7 (c) CNC machines (5 marks) 7 (d) CO₂ Welding(5 marks) 7 (e) Metal extrusion.(5 marks)