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<=Craft Certificate in Plumbing: Plumbing Craft Theory past paper July 2017
Differentiate between ferrous and non-ferrous metals, stating two examples in each case.
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Questions List:
1. Outline how safety is observed in each of the following (i)clothing, (ii) behaviour, (iii) self care; (iv)storage of tools.
2. Sketch and label the following plumbing hand tools. (i)hacksaw, (ii) pipe reamer.
3. Differentiate between ferrous and non-ferrous metals, stating two examples in each case.
4. State: (i)the chemical name of water (ii)the chemical symbol of water
5. Name three major sources of water
6. Outline four design principles of direct system of hot water supply.
7. Differentiate between a tap and a valve in plumbing installations
8. Define the term alloy
9. Describe the following alloys: (i) brass, (II)bronze
10. Explain the following water treatment processes: (i)screening, (ii)sedimentation, (iii)chlorination
11. With the aid of a labeled sketch, explain the operation of a double trap siphonic water closet.
12. Sketch and label a single stack drainage system.
13. Name three types of gas welding flames.
14. With the aid of labeled sketches, differentiate between rightward and leftward gas welding techniques
15. Name four gas welding defects
16. Calculate the power output of a centrifugal pump which can lift 200 litres of water from a shallow well 6 m deep in 10 seconds.
17. Name two physical and chemical properties of water.
18. Sketch and label an indirect hot water supply system for a domestic house
19. Outline four reasons for are welding electrode coating.
20. Sketch and label an alternating current arc welding set
21. Describe the procedure of tinning a soldering bit.
22. State four positions where manholes are used in drainage systems.
23. List two reducing agents used in water treatment.
24. Outline the four properties of a coagulant.
25. Outline four characteristics of below ground drainage system.
1. Outline how safety is observed in each of the following (i)clothing, (ii) behaviour, (iii) self care; (iv)storage of tools.
2. Sketch and label the following plumbing hand tools. (i)hacksaw, (ii) pipe reamer.
3. Differentiate between ferrous and non-ferrous metals, stating two examples in each case.
4. State: (i)the chemical name of water (ii)the chemical symbol of water
5. Name three major sources of water
6. Outline four design principles of direct system of hot water supply.
7. Differentiate between a tap and a valve in plumbing installations
8. Define the term alloy
9. Describe the following alloys: (i) brass, (II)bronze
10. Explain the following water treatment processes: (i)screening, (ii)sedimentation, (iii)chlorination
11. With the aid of a labeled sketch, explain the operation of a double trap siphonic water closet.
12. Sketch and label a single stack drainage system.
13. Name three types of gas welding flames.
14. With the aid of labeled sketches, differentiate between rightward and leftward gas welding techniques
15. Name four gas welding defects
16. Calculate the power output of a centrifugal pump which can lift 200 litres of water from a shallow well 6 m deep in 10 seconds.
17. Name two physical and chemical properties of water.
18. Sketch and label an indirect hot water supply system for a domestic house
19. Outline four reasons for are welding electrode coating.
20. Sketch and label an alternating current arc welding set
21. Describe the procedure of tinning a soldering bit.
22. State four positions where manholes are used in drainage systems.
23. List two reducing agents used in water treatment.
24. Outline the four properties of a coagulant.
25. Outline four characteristics of below ground drainage system.
