Plumbing Theory N2 — Document

December 2023 — N2 — Plumbing Theory

N2 2023 Nated Engineering

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🎯 100 marks ⏱️ 3h 📄 5 pages 📝 38 items found

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Q3— Section header —

Q1— Section header —

1.1Indicate whether the following statements are TRUE or FALSE by writing only (1.1.1

1.1.5\in the ANSWER BOOK.

1.1.1An underground fire hydrant must be placed so that it is not in the way of t raffic or pedestrians but can easily be reached when needed

1.1.2In a wet pipe system water is always present in the pipe up to the sprinkler head.

1.1.3A thermostatic valve is cheap device that incorporates water when mixing hot and cold water for showers.

1.1.4A pressure zone refers to the reticulation networks that are supplied to a specific service reservoir.

1.1.5

1.2Name the parts indicated on the sketch and write only the answer next to the question number (1.2.1

1.2.7

1.3List THREE functions of a service reservoir. (3\

1.2.6(11022052 Copyright reserved Please turn over

1.4Name FIVE factors that will influence the choice of coagulants and flocculants. (5\ [20]20

Q2— Section header —

2.1Draw with labelling included , a single line diagram of a water heating system with a 150 litre vertical geyser with a pressure rating of 400 kPa.

2.2Name FOUR advantages of a push through geyser. (4\

2.3What is the difference between a two pipe system , a one pipe system

2.4Why is it advisable to use a one pipe system in a dwelling? (2\ [20] QUESTION3: DRAINAGE20

3.1Answer this question on the attached ANSWER SHEET (attached\ . Write your EXAMINATION NUMBER in the space provided, detach it from the question paper and hand it in with the ANSWER BOOK. The plan indicates details of a house

3.2The invert level of a drain is 600 mm at the head of a drain. Calculate the invert depth at the first change of direction if the length of the first section of pipe is 15 m and the fall is 1:40. (5\

3.3List FOUR advantages of a manhole when comparing it with rodding eye. (4\

3.4hy should a French drain not be covered with waterproofing material (1\

3.5Give TWO suitable reasons for connecting a French drain to a septic tank (2\

3.6What is the difference between a manhole and an inspection chamber? (3\

3.7Name TWO methods of inspecting and testing drains. (2\

3.8Explain what is meant by the term drainage installation (3\ [35] (1102205235

Q4— Section header —

4.1Name TWO common areas that are secured with flashing on a roof (2\

4.2hat is a vent pipe flashing and where is it used (2\

4.3The diagram below shows vent pipe flashing with its parts Name the parts on the diagram and write only the answer next to the question number

4.3.7

4.4Name FOUR types of flashing (4\ [15]15

Q5— Section header —

5.1The maximum volume of water that the tank can hold (3\

5.2The mass of the tank when it is full of water (M ass of empty tank is 250 kg\ (4\

5.310

4.3.6(11022052 Copyright reserved ANSWER SHEET EXAMINATION NUMBER:

Mark Allocation

Total100 marks

Sections20 + 20 + 35 + 15 + 10 = 100 marks

Paper information

TitleDocument

SubjectPlumbing Theory

LevelN2

Document typeQuestion paper

Year2023

MonthDecember

Pages6

Downloads3

Examination context

Decade2020s

Years ago3y

SeasonSummer (SH)

Start dayFriday

Exam periodDecember 2023

Days since exam1,045

About Plumbing Theory examination preparation

This TVET examination resource can be used as part of a structured revision programme. Past papers are most useful when learners attempt questions independently, work within a realistic time limit, and review their answers afterwards.

How to use this resource for revision

A TVET past examination paper is most useful when it is treated as an active revision exercise. Try the questions yourself before checking the corresponding memorandum. Where you make an error, identify the reason — was it a knowledge gap, a calculation mistake, an interpretation issue, or an examination technique problem?

For stronger examination practice, complete the paper without unnecessary interruptions and keep track of the questions that take the most time. Afterwards, review the memorandum and separate knowledge gaps from mistakes caused by interpretation, calculation, structure, or examination technique.

understanding question requirements

applying subject knowledge

working under time constraints

checking answers

identifying revision priorities

A practical revision approach

Start by completing the resource without looking at the memorandum. Review incorrect and incomplete answers afterwards and make a short revision list based on the areas that caused difficulty.

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File size447 KB

Pages6

Archived on8 September 2026

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