Making N4 — Memo

November 2022 — N4 — Making

N4 2022 Nated Engineering

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Questions — A Preview of What to Expect in the Document

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Q1— Section header —

1.55

Q2— Section header —

2.1Paper created from chemical pulp and free of wood particles

2.2Refers to how quickly water drains from pulp

2.3The mass fraction of fibre in a suspension, expressed as a percentage

2.4The breaking down of fibre bundles and flakes

2.5The chemical substance that binds paper fibres together

2.6The thickness of a paper sheet

2.7Ability of paper to obstruct the passage of light

2.8The process of removing water from the paper using hot cylinders

2.9All foreign materials removed through cleaning and screening as it lowers the quality of pulp

2.1020

Q3— Section header —

3.1Bleached SF chemical pulp; bleached recycled pulp; clay/CaCo [12]12

Q4— Section header —

4.1Constant head stuffbox, pressure screen location, smooth gaskets, pipe angle, polished surface (4\

4.2.1Determines jet speed constant level prevents basis mass variations (2\

4.2.2Discussion on either controlling total head by stock flow and level control by air flow, or total head by air flow and level control by stock flow. Stock flow slower than air flow corrections, instrument

4.3Slice must be carefully adjusted to at least three screws at any one correction position, screws correctly maintained, replace distorted lip, balance flow in inlet manifold, rectifier rolls seated correctly, h/box showers operate correctly, set

Q5— Section header —

5.1The zeta potential is a measure for the extent to which charged particles may interact with each other PD between Stern and Gouy Chapman

5.2Contact time and shear rate are important Avoid excessive mixing after floc formation to prevent disruption Avoid high shear regions

Q6— Section header —

6.1[15]15

Q7— Section header —

7.110

Q8— Section header —

8.5Burst Edgewise compression Fibre bonds Resistance to abrasion Water resistance (5 [5]5

Q9— Section header —

Mark Allocation

Sections5 + 20 + 12 + 15 + 15 + 10 + 5 + 10 = 92 marks

Key Information

APS Score99 points

Paper information

TitleMemo

SubjectMaking

LevelN4

Document typeNated Engineering

Year2022

MonthNovember

Pages5

Downloads3

Examination context

Decade2020s

Years ago4y

SeasonSpring (SH)

Start dayTuesday

Exam periodNovember 2022

Days since exam1,440

About Making 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 size619.5 KB

Pages5

Archived on8 September 2026

File age47d

ContributorFreeMode

FingerprintC4D8065CEC0B

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