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QUESTION 5
(a) State TWO causes of excessive noise in a pressure pumped water system, and give a
remedy for each.
Cause
Remedy
Cause
Remedy
(2 marks)
(b) Give TWO reasons why a pump or a pressure system may continue to stop and start
whether or not water is being used, and give a remedy for each.
Reason
Remedy
Reason
Remedy
(4 marks)
(c) State TWO methods of automatically controlling the water level in a supply tank from a
pumped system.
1
2
(2 marks)
(d) Explain what is meant by the term positive suction head in a pump system.
(1 mark)
(e) State the purpose of a foot valve on a suction line and explain why it is required.
Purpose
Explanation
(2 marks)
(f) Name ONE type of pump best suited for each of the following situations on a water supply.
(i) A pump required for suction and pumping.
(ii) A pump installed at water level and required to pump water only.
(1 mark)
Total 12 marks