Industriele Instruments N5 — Memo

December 2023 — N5 — Industriele Instruments

N5 2023 Nated Engineering

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Q1— Section header —

1.1.1(4\

1.1.2Advantages Relatively low cost Acceptable pressure loss Several construction materials available Disadvantages Limited to pipe size and capacity Not 100%

Q2— Section header —

2.1drag body flow meter which detects the impact forces by a strain gungy circuitry. The difference between the target and drag body is that the drag body flow meter has only an electrical output

2.2Advantages Measures liquids, gases and vapours Connections do not freeze Can be used for high temperatures Less sensitive to change in Reynolds number Very accurate Disadvantages Can only

Q3— Section header —

3.1Pressure

3.2Hand held hydro meters are most widely used devices for determining the specific gravity of relatively transparent liquids. The meter displaces a volume of the unknown liquid until an equilibrium is reached between upward buoyant force and downward hydro

3.3.1Dry reference gas is obtained by drying part of the sample gas in an integral dryer, o an external source of dry air or nitrogen can be connected. Two solenoid valves placed upstream of the measuring cell switch the sample and reference gases from one crystal to the

3.3.2The instrument is unable to measure moisture in liquid phase samples. For this reason, the instrument is applicable to only those liquid samples which can be completely vaporised within the operating limits of the instrument. In addition, monometers with

3.4(10\

3.5PHOTO SENSITIVE RESISTORINPUT SIGNALOUTPUT CURRENTMIRRRORTHERMO ELECTRICCOOLING UNITTHERMISTORTO INDICATINGINSTRUMENTSCATTERED LIGHT (7\ [33]33

Q4— Section header —

4.1The instrument must substantially free from errors caused by supply voltage or frequency variation The zero reading must be stable over long period The current taken from the

Q5— Section header —

5.1Measurement Comparison

5.2.2Wheatstone bridge Linear variable differential transformer [21] TOTAL SECTION B GRAND TOTA21

Mark Allocation

Sections16 + 13 + 33 + 17 + 21 = 100 marks

Paper information

TitleMemo

SubjectIndustriele Instruments

LevelN5

Document typeNated Engineering

Year2023

MonthDecember

Pages6

Downloads3

Examination context

Decade2020s

Years ago3y

SeasonSummer (SH)

Start dayFriday

Exam periodDecember 2023

Days since exam1,044

About Industriele Instruments 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.

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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 size247.1 KB

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Archived on8 September 2026

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