Production Process Test - VI (Plastic Forming)
- 1.Which of the following material is not made by injection molding?
- A.
Nuts
- B.
Tubes
- C.
Car handels
- D.
Electrical fittings
- 2.What is the minimum temperature allowed to be given to the injection molding process?
- A.
120°C
- B.
130°C
- C.
140°C
- D.
150°C
- 3.What is the maximum temperature allowed to be given to the injection molding process?
- A.
300°C
- B.
320°C
- C.
350°C
- D.
400°C
- 4.In blow molding, to inflate soft plastic, which medium is used?
- A.
Air
- B.
Water
- C.
Oil
- D.
Alcohol
- 5.Which of the following plastics is not used in blow molding?
- A.
Terepthalate
- B.
Polypropylene
- C.
Polythene
- D.
PVC
- 6.What is the minimum air pressure required in blow molding process?
- A.
350 kPa
- B.
400 kPa
- C.
450 kPa
- D.
500 kPa
- 7.Which of the following is not a type of blow molding process?
- A.
Injection blow molding
- B.
Extrusion blow molding
- C.
Multi-smaller blow molding
- D.
Multi-larger blow molding
- 8.Which of the following is not an application of blow molding process?
- A.
Toy bodies
- B.
Door liners
- C.
Bottles
- D.
Pipes
- 9.Which of the following moulding processes is widely used for the manufacturing of plastic bottles?
- A.
Compression moulding
- B.
Injection moulding
- C.
Jet moulding
- D.
Blow moulding
- 10.Which of the following materials is mostly used for making of thermoforming moulds?
- A.
Steel
- B.
Grey cast iron
- C.
Aluminium
- D.
White cast iron
- 11.Blow moulding is a very slow process, however economical for producing products with better quality.
- A.
True
- B.
False
- 12.In extrusion blow moulding process, it is very difficult to trim away excess of plastics.
- A.
True
- B.
False
- 13.Single stage stretch blow moulding process is mostly used for small level production
- A.
True
- B.
False
- 14.Melting section is another name for which section?
- A.
Feed section
- B.
Transition section
- C.
Pumping section
- D.
Collapse section
- 15.How are extruded materials cooled?
- A.
Water
- B.
Contact with chilled surface
- C.
Air
- D.
Oil
- 16.Which of the following is not an important factor of cooling in extrusion?
- A.
Reduction in shrinkage
- B.
Reduction in distortion
- C.
Ease of adding colours
- D.
Rate of cooling
- 17.Which of the following is not an application of polymer extrusion?
- A.
Door insulation seals
- B.
Door insulation seals
- C.
Cables
- D.
Circuit boards
- 18.Which of the following equipment is used for controlling the temperature of polymer material in the extrusion process?
- A.
Thermo resister
- B.
Thermometer
- C.
Thermocouple
- D.
Glass tube
- 19.Tubes having U shape cannot be manufactured by polymer extrusion process.
- A.
True
- B.
False
- 20.In compression molding, the curing time does not depend on which of the following factors?
- A.
Material
- B.
Curing temperature
- C.
Geometry
- D.
Thickness
Questions: 30 | Attempts: 717 | Last updated: Feb 27, 2013
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