Dr.A.P.J.Abdul Kalam University
Bachelor of Engineering
Third Semester Main Examination, Dec-2020
Manufacturing Process (ME224T)
Time: 3:00 Hrs Max Marks 70
Note: 1. Attempt any five questions out of eight.
2. Answer should be precise & to be point only.
3. Assume suitable data if necessary & state them clearly.
Q.1 (a) What are the basic rules to be following for good casting design? (7)
(b) Define the following pattern with neat sketch
i) Split Patterns ii) Sweep Pattern
iii) Shell Pattern iv) Skeleton Pattern (7)
Q.2 (a) Explain machines used in pattern making ? (7)
(b) Explain the types of moulding band? (7)
Q.3 (a) Why the welded joint is in tension and weld should be peened with a
hammer? (7)
(b)Which welding process can be used to weld two steel parts without
melting them or without adding filler material? (7)
Q.4 (a) Calculate the gating dimensions with a gating ration of 1:2:2 for a ductile
iron casting of section thickness 12mm weighing 30kg. Assume a spruce
height of 200mm. (7)
(b) Explain advantages of welding over other joints? (7)
Q.5 (a) How forging operations are important in Manufacturing process explain with neat sketch
Droving, upsetting and impression die or closed die forging. (7)
(b) Explain Various steps involved in drop forging? (7)
Q.6 (a) Explain principle of rotary forging with neat sketch? (7)
(b) Compare mechanical press with a hydraulic press. (7)
Q.7 It is required to punch a hole of 10mm diameter in a mild steel plate of 10mm
thickness determine whether it is possible to punch hole I sheet having shear strength of 60 kg/mm2
and compressive strength of punch is 200 kg.mm2 . It is not possible than what could be done to
produce this hole? (14)
Q.8 Explain any four.
(a) Difference between Hot and Cold Rolling (3.5)
(b) Electro. Discharge Machining (EDM). (3.5)
(c) Hydro forming. (3.5)
(d) Ultra-Sonic Machining (USM) (3.5)
(e) Laser Beam Machining (LBM) (3.5)
(f) Surface Integrity
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