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<=Craft Certificate in Plumbing: Plumbing Craft Theory past paper July 2021
State two advantages of a fully rented one-pipe drainage system
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Questions List:
1. Name three sources of water
2. State the sources of water associated with each of the following water qualities: (1) wholesome; (II) suspicious; (III) dangerous
3. Explain the following water treatment processes: (I )sterilisation; (ii) coagulation
4. Sketch and label a slow sand filter and explain its operation
5. Sketch and label a crydon ball valve
6. Sketch and label the following tools: (i) pipe vice; (ii) adjustable spanner
7. State two design factors of indirect cold water supply system for a domestic dwelling
8. State two advantages of indirect cold water supply systems
9. Sketch and label an indirect cold water supply system
10. Sketch and label the combined underground drainage system
11. Outline the process of smelting iron ore in a blast furnace
12. State four safety precautions observed during arc welding
13. Outline the procedure of arc welding
14. Sketch and label the dry riser fire fighting system
15. Illustrate the layout of a gravity solar water heating system
16. State two safety precautions observed in a construction site
17. Outline two consequences that would follow if an accident occurs in a construction site
18. State two advantages of a fully rented one-pipe drainage system
19. Describe the following terms as used in gas installation systems. (i)condensate receiver; (ii)control cock; (iii)installation pipe
20. Sketch and label the following components used in a water pipeline: (i) air valve; (ii) break pressure tank
21. State four factors considered when selecting a pump
22. Name four causes of a pump failure to deliver water
23. Sketch and label a direct hot water system for a domestic dwelling
24. Illustrate two causes of loss of trap seal associated with pressure difference within the drainage system
25. Sketch and label a double trap siphonic water closet
1. Name three sources of water
2. State the sources of water associated with each of the following water qualities: (1) wholesome; (II) suspicious; (III) dangerous
3. Explain the following water treatment processes: (I )sterilisation; (ii) coagulation
4. Sketch and label a slow sand filter and explain its operation
5. Sketch and label a crydon ball valve
6. Sketch and label the following tools: (i) pipe vice; (ii) adjustable spanner
7. State two design factors of indirect cold water supply system for a domestic dwelling
8. State two advantages of indirect cold water supply systems
9. Sketch and label an indirect cold water supply system
10. Sketch and label the combined underground drainage system
11. Outline the process of smelting iron ore in a blast furnace
12. State four safety precautions observed during arc welding
13. Outline the procedure of arc welding
14. Sketch and label the dry riser fire fighting system
15. Illustrate the layout of a gravity solar water heating system
16. State two safety precautions observed in a construction site
17. Outline two consequences that would follow if an accident occurs in a construction site
18. State two advantages of a fully rented one-pipe drainage system
19. Describe the following terms as used in gas installation systems. (i)condensate receiver; (ii)control cock; (iii)installation pipe
20. Sketch and label the following components used in a water pipeline: (i) air valve; (ii) break pressure tank
21. State four factors considered when selecting a pump
22. Name four causes of a pump failure to deliver water
23. Sketch and label a direct hot water system for a domestic dwelling
24. Illustrate two causes of loss of trap seal associated with pressure difference within the drainage system
25. Sketch and label a double trap siphonic water closet
