GATE 2024 PI – Question 38
Manufacturing Processes I · Polymers and Composites · 2 marks · Multiple choice
Match polymer processes P: extrusion; Q: injection molding; R: blow molding; S: compression molding, with applications 1: complex close-tolerance parts; 2: thermoset components; 3: long uniform sections; 4: hollow shapes.
- P–3,Q–1,R–2,S–4
- P–2,Q–3,R–4,S–1
- P–4,Q–2,R–1,S–3
- P–3,Q–1,R–4,S–2
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Correct answer: (D) P–3,Q–1,R–4,S–2
Explanation
Extrusion continuously forms uniform sections. Injection molding fills complex cavities accurately. Blow molding inflates a hollow preform, and compression molding commonly shapes thermosetting compounds. Therefore **P–3,Q–1,R–4,S–2: D**.
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