Instrumentation Technology NCV Level 3 — Memo

February 2020 — NCV Level 3 — Instrumentation Technology

NCV Level 3 2020 NCV Engineering

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Q1— Section header —

1.1Vibration and/or s hock Overpressure and pressure spikes Temperature Water Electrical interference Vibration and/or s hock Vibration s

1.3Put the controller on manual Connect a digital multi meter in the c urrent range in series with the transmitter output Isolate the process valve Isolate the instrument isolation valve.

Q2— Section header —

2.1.1Thermocouples RTDs Thermistors to ensure it continues to deliver the required accuracy. In the case of temperature measurement equipment, the properties of bimetals and thermocouple wire

2.1.4isk of damage for example the temperature at which ice melts and that of boiling water. Temperature increase causes the fluid to expand,

Q3— Section header —

3.1The approach channel should b e straight and of uniform cross section for a distance of 15 to 20 times the maximum anticipated water depth (head\ (Hmax\ upstream of the weir. The approaching flow should be sub

3.2.1for drawing for labelling (10\

3.2.2Vortex flowmeters operate under the vortex shedding principle, where oscillating vortexes occur when a fluid such as water flow past a bluff (as opposed to streamlined\ body. The frequency that the vortexes are shed depend

3.4.1False

3.4.2False

3.4.3True

3.4.4True

3.4.545

Q4— Section header —

1.10

4.2.1

4.3.1It op erates on the principle of high frequency sound signals. A device called an ultrasonic transducer , which is basically a specialis loudspeaker/microphone is suspended over the centre of the tank or container in which the level material is to be

4.3.3Dense steam the capacitance of which depends on the medium between the probe and the wall. When only air is present, the capacitance of the capacitor is low. However, the capacitance will increase when

Mark Allocation

Sections23 + 37 + 45 + 45 = 150 marks

Paper information

TitleMemo

SubjectInstrumentation Technology

LevelNCV Level 3

Document typeNCV Engineering

Year2020

MonthFebruary

Pages8

Downloads4

Examination context

Decade2020s

Years ago6y

SeasonSummer (SH)

Start daySaturday

Exam periodFebruary 2020

Days since exam2,443

About Instrumentation Technology 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.

File details

File size330.6 KB

Pages8

Archived on8 September 2026

File age45d

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