Process Technology NCV Level 3 — Memo

February 2020 — NCV Level 3 — Process Technology

NCV Level 3 2020 NCV Engineering

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Q1— Section header —

1.55

Q2— Section header —

2.1Tru

2.2False

2.3True

2.4True

2.55

Q3— Section header —

3.1on exchange

3.2Flocs

3.3nert

3.4iffusion

3.55

Q4— Section header —

4.1Batch mixing is the mixing of various ingredients n a specific sequence to produce a homogenous material (2\

4.2Solid removal equipment is a simple cylindrical gravity settling tank The material is fed into the tank and allowed to stand for a while he liquid is then drawn off at the top

4.3Pull up the handle at the requir ed depth. The sample will be drawn into the samplers. Withdraw the samples. Spatulas

4.5Gas fired burners Oil burners Coal fire burners

4.6Coal burning until a large amount of sulphur causes acid rain Contamination of land water ways Coal fired power plants without effective fly

4.7Liquefied petroleum (1\ [30]30

Q5— Section header —

5.1Cross flow cooling towers The used water is discharged at a point away from the inta ke to prevent recycling of warm water discharge. Open systems have high flow rates

5.4Power tools Hydraulic drills Pneumatic tools Worksho p equipment such as compressors and hoists Consumables like oil

5.6Dry products can be reserved longer than wet products Product yields and assays can be calculated from a sample of dry pro ducts Drying is often needed to make products compatible with downstream processes

5.7A single drum dryer has one drum Double drum dryers have two drums rotating outwards

Q6— Section header —

6.1Gun metal A suitable feed mechanism is used to supply the feed to the outer surface of the dryer. The product or solution covers the drum and heat from the dryer surface heats it up, changing the liquid from the feed into a

6.3It can be done by instruments plated in the product flows to measure the concentr ation of a certain chemical Some system divert a small stream of fluid that can be analysed by viscosity or by processing the fluid to determine the constituents

6.4Columns with freeboard The freeboard design has extra space above the resin bed that allows backwashing Packed bed columns Columns that do not have space for backwashing are known as packed bed column

Mark Allocation

Sections5 + 5 + 5 + 30 + 25 = 70 marks

Paper information

TitleMemo

SubjectProcess Technology

LevelNCV Level 3

Document typeNCV Engineering

Year2020

MonthFebruary

Pages5

Downloads3

Examination context

Decade2020s

Years ago6y

SeasonSummer (SH)

Start daySaturday

Exam periodFebruary 2020

Days since exam2,443

About Process 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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