Instrumentation Technology NCV Level 4 — Memo

November 2023 — NCV Level 4 — Instrumentation Technology

NCV Level 4 2023 NCV Engineering

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📄 7 pages 📝 32 items found 📚 2 topics

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Q1— Section header —

1.1C or D

1.3A or B

1.1010

Q2— Section header —

2.1True

2.2False

2.3True

2.45

Q3— Section header —

3.1010

Q4— Section header —

4.1Measurement errors also occur due to changes in liquid density to the surface of the material and back to the receiver affect the speed of the ultrasonic signal (4\

4.2.3This guiding reduces the effect of dust above granular solids as well as the turbulence in some liquids. very hot or detrimental to installing sensors (3\

4.3.2The disadvanta ges of this system are the cost Special permission must be obtained from government to use these type of radioactive substances at the selected level The source is enclosed in a protective housing

4.4ONE mark for each correctly labelled part NOTE : Any other acceptable sketch (6\ (34\

Q5— Section header —

5.1.1A piston cylinder load cell produce hydraulic output pressure while the strain gauge load cell assemblies provide an electrical output proportional to the applied load. with strain gauges bonded to it

5.3.2Density defined as the mass per unit volume of a material, e.g. pound per cubic foot (lb/ft \ or kilogram per cubic metr (kg/m (2\

5.3.31 kg/m = 0,1084 lb/ft 500 kg/m = Y lb/ft ,2 lb/ft (3\

5.4The three types of strain gauge load cells are shear, compression tension (3\ [25]25

Q6— Section header —

6.1.1urbidity analyser is an instrument used to measure the cloudiness or haziness of a fluid caused by individual particles or suspended solids by sensing changes in the physical or electrical properties of

6.3.1This is achieved by cooling the air or gas until water condenses on an object and then measuring the temperature at which condensation takes place. A mirror surface, polished stainless steel or silvered surface

6.3.2Oxidation reduction potential (3\

6.3.3Oxidation means a molecule or element loses electrons Reduction means electrons are added to a molecule. [32]32

Q7— Section header —

7.1.5

7.2safety system is a system that consists of an individual device or an assembly of devices that form a system designed to protect personnel from injury and production equipment from damage. nterlock (burner control systems\

7.4Open to alarm is an alarm that provides a fail safe alarm signal and should alwa ys be used with safety systems. Close to alarm is an alarm that can be used for normal non safety alarms

7.5Electrical signals can be used over many kilometr There is negligible time lag in terms of signal travel Information loss is very limited , as the output is linear The electrical systems are not sensitive to vibrations

7.6.2A positioner is a device used to ensure the positive position of a valve A positioner compares the input signal from the controller to the actual valve position and applies a pneumatic output to the actuator to ensure that the valve moves to the proper position

Topics Identified

Business FunctionsBusiness Plan

Mark Allocation

Sections10 + 5 + 10 + 25 + 32 + 34 = 116 marks

Paper information

TitleMemo

SubjectInstrumentation Technology

LevelNCV Level 4

Document typeNCV Engineering

Year2023

MonthNovember

Pages7

Downloads2

Examination context

Decade2020s

Years ago3y

SeasonSpring (SH)

Start dayWednesday

Exam periodNovember 2023

Days since exam1,075

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.

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File size291.1 KB

Pages7

Archived on8 September 2026

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