Instrumentation Technology NCV Level 2 — Memo

November 2022 — NCV Level 2 — Instrumentation Technology

NCV Level 2 2022 NCV Engineering

↓ Download PDF 📄 371.7 KB

Preparing document

📋 Document Analysis

📄 7 pages 📝 29 items found 📚 1 topics

See full analysis

Questions — A Preview of What to Expect in the Document

This section provides a quick preview of questions from the document. It may not display every question or the complete wording of each one. For the full content, including diagrams, tables and other information, view the original PDF above.

Q1— Section header —

1.1.1The closeness with which measurement approaches the true value of variable being measured

1.1.2

1.2

1.3Electronic signal transfer method Fibre optics transfer method Wireless transfer method [15]15

Q2— Section header —

2.1Control Valves e used in three positions: closed, fully open and throttled (partially open\ to control the volume of fluid passing through them Isolation Valves e used to cut off or isolate a part of the system from

2.3Flashing Cavitation Valve noise Erosion Chemical attack and its pressure decrease If the pressure within the throat falls below the vapour pressure of the liquid, vapour bubbles form

2.5(3 marks for the correctness of drawing\ (5 marks for the labelling (8\

2.6They c annot be used in all applications, since not all applications use contact sensing.

Q3— Section header —

3.1.1Pressure measured against atmospheric pressure as a point of reference but which is always less than atmospheric pressure

3.1.2A measure of how much force is placed on a unit surface by the weight of air above that surface

3.1.3

3.2.1Unequal leg ged tube manometer Well type manometers Incline tube manometers Water Mercury Paraffin

3.3.2Low pressure input Moving end Spring ressure indicator Bellow element High pressure input (6\

3.3.3A calibrated spring is used to pre compress the bellows so that it is never extend past its free length (1\

3.4.1shaped Bourdon tube Helical shaped Bourdon tube Glycerine leaks if a glycerine filled gauge is used Freezing in winter Deformation of the element because of fatigue or overrange

Q4— Section header —

4.1.1It is v ery stable

4.1.2A thermo well's main purpose is to protect a thermometer from external conditions. can handle an assortment of corrosive or abrasive process media and withstand turbulent or high pressure conditions. thermo

4.3resistance thermometer operates on the principle that the resistance of a metallic conductor varies in accordance with temperature variations The relationship between temperature and resistance is linear

Q5— Section header —

5.1(1 mark for each label and 2 marks for the sketch\ (8\

5.2sec Q= /sec (5\

5.3.1Variable area flow meter or otameter (2\

5.3.2Gravity Float Tapered metering tube Flow Scale (5\

5.3.3A change in flow will affect the pressure drop across the float, upsetting the equilibrium of the forces acting on the float The float will move up or down the tube until the forces are at equilibrium again

5.3.4They are not suitable to low flow rates Venturi tube Nozzle Segmented wedges [38] TOTAL:38

Topics Identified

Business Plan

Mark Allocation

Sections15 + 30 + 30 + 38 = 113 marks

Paper information

TitleMemo

SubjectInstrumentation Technology

LevelNCV Level 2

Document typeNCV Engineering

Year2022

MonthNovember

Pages7

Downloads4

Examination context

Decade2020s

Years ago4y

SeasonSpring (SH)

Start dayTuesday

Exam periodNovember 2022

Days since exam1,440

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 size371.7 KB

Pages7

Archived on8 September 2026

File age46d

ContributorFreeMode

Fingerprint89D315CDA658

Questions and learner discussion

No questions or discussions have been posted yet.