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Production Process: Moulding with polymers
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Production Process: Moulding with polymers
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25 Questions

1. Tubes having U shape cannot be manufactured by polymer extrusion process.
2. What is the minimum pressure required in a transfer molding process?
3. The three mould technique is generally preferred than the two mould technique in injection moulding process.
4. In flash butt welding, the forced out metal is called flash.
5. Melting section is another name for which section?
6. How are the metals to be welded connected to each other in spot welding?
7. Speed of production in transfer molding is higher than that of compression molding?
8. A heavy surface finishing is always required for components made in injection moulding machine.
9. In the cable extrusion process, what is the speed of product winding?
10. Which of the following method is not used in applying pressure in spot welding process?
11. Electrodes used in spot welding are made up of which material?
12. In extrusion process, extra shearing occurs in which part of the system?
13. Upset butt welding is majorly used in the making of automobile parts.
14. Which of the following cooling systems is used in injection moulding process to increase solidification rate of components made?
15. What is the minimum temperature required in a compression molding process?
16. What is the maximum curing time required in a compression molding process?
17. Which of the following is not an application of polymer extrusion?
18. Which of the following material is not used in extrusion?
19. How are extruded materials cooled?
20. Up to what thickness, can steel be welded using spot welding process?
21. Which of the following is not an important factor of cooling in extrusion?
22. What is the maximum power supply needed for the working of spot welding process?
23. The moulding directions in injection moulding can affect the cost of equipments used in the process.
24. The flow of plastic in the mould cavity is more proper and smooth if the thickness of the component made is very small.
25. Components from injection moulding process are made very expensive due to the application of very costly equipment.

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