Pulp And Making Technology NCV Level 3 — Memo

November 2022 — NCV Level 3 — Pulp And Making Technology

NCV Level 3 2022 NCV Engineering

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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 —

1.1Silo

1.2Flotation

1.3Slurry/ tock

1.4Ramping

1.55

Q2— Section header —

2.1True

2.2True

2.3False

2.4False

2.5True

2.6True

2.7False

2.8True

2.9True

2.1010

Q3— Section header —

3.1010

Q4— Section header —

4.2Logs are continuously fed i nto one end of a rotating drum. Log lifters mounted on the inside of the drum shell cause the logs to t umble and roll inside the drum. While tumbling and rolling, the logs hit and rub against

Q5— Section header —

5.1Pin drum feeder Depither [6]6

Q6— Section header —

6.1In a deflaker f ibre bundles are broken down int o loose stretchy fibres is happens between two metal de flaker plates with grooves called fillings.

6.6During the first part of the process, wood chips are steamed to soften Thereafter, the softened chips are sent to the primary and secondary refiners to be broken up into individual fibres. [11]11

Q7— Section header —

7.1Pressure starts to build up and water is removed from the fibre wad when the fibre is trapped between the teeth Fibres are under complete pressure to allow the cooking liquor to be distributed evenly throughout the chips

Q8— Section header —

8.1[4]4

Q9— Section header —

9.1Soda pulping does not produce a foul smell (1\

9.2.1The screw feeder turns too quickly, not allowing the bagasse enough time to cook.

9.2.2Change the screw feeder rotation speed so that the retention time is correct.

9.2.3Cookin g temperature is too low, because steam supply is too little

9.2.4

9.3Calcium or magnesium reacts with sulphurous acid and form salt which decreases the pH of the cooking liquor making lignin more soluble in the cooking liquor. This allows the lignin to dissolve in the cooking liquor thus

Q10— Section header —

10.1

10.2The time the pulp stays in the tower cannot be changed All stages in the tower must be started at the same time When the tower is shut down, the remaining pulp must be flushed out with water (3\

10.3Caustic extraction and hypochlorite brightening (1\

10.4(4\ [11] Brown stock /Dirty pulp enters the washer Dirty li quor is recovered from11

Q11— Section header —

11.1

11.2Extrusion Wet [7]7

Q12— Section header —

12.1Binders Additives cause less foaming Additives make paper sheets whiter and brighter [8] TOTAL SECTION B : GRAND TOTAL :8

Topics Identified

Business Functions

Mark Allocation

Sections5 + 10 + 10 + 9 + 6 + 11 + 12 + 4 + 7 + 11 + 7 + 8 = 100 marks

Paper information

TitleMemo

SubjectPulp And Making Technology

LevelNCV Level 3

Document typeNCV Engineering

Year2022

MonthNovember

Pages6

Downloads2

Examination context

Decade2020s

Years ago4y

SeasonSpring (SH)

Start dayTuesday

Exam periodNovember 2022

Days since exam1,439

About Pulp And Making 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 size187.6 KB

Pages6

Archived on8 September 2026

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