Refrigeration Practice NCV Level 3 — Document

February 2020 — NCV Level 3 — Refrigeration Practice

NCV Level 3 2020 NCV Engineering

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🎯 1 marks ⏱️ 3h 📄 7 pages 📝 41 items found 📚 1 topics 🔑 1 key info

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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 —

1.10\the ANSWER BOOK. COLUMN A COLUMN B

1.10Measure of the quantity of a substance Mea sure of internal energy content Force per unit area Volume per unit mass Total heat in a substance Energy no longer available to do useful work

Q2— Section header —

2.1Define the term mass flow (2\

2.2How much heat transfer is ne eded to raise the temperature of 5, g of water from 25 C to 75

2.3.1

2.3.2Give ONE reason fo r the answer to

Q2— Section header —

2.4

Q3— Section header —

3.1List FIVE precautionary measures to minimis e the risk of getting injur ed during the installation of a wiring system. (5\

3.2List FIVE compulsory complianc e tests to do after wiring an installation. (5\

3.3What is the purpose of earthing? (2\

3.4List SIX precautionary measures to consider when using a digital multimeter. (6\

3.5The cable from the supplier's meter box must be connected to t he distribution board in your home.

3.5.1How can the PVC wire armoured cable be secured to the metal distribution board? (3\

3.5.2Which FOUR tools can be used to secure the cable to the distribution board? (4\ [25] (6030053\25

Q4— Section header —

4.2Explain how a refrigeration technician will use each of the following tools:

4.2.1Flaring tool

4.2.2Nut drivers

4.2.3Brazing torch

4.2.4 Flat file

4.2.5

4.3A refrigerator is leaking water.

4.3.1What causes the refrigerator to leak water? (2\

4.3.2How can this leak be fixed? (4\

4.4All refrigerants have a global warming po tential and therefore contribute to the greenhouse effect when released into the atmosphere.

4.4.1List FIVE precautionary measures to protect humans against exposed refrigerants. (5\

4.4.2How can the environment be protected from harmful ref rigerants? (2\ [25]25

Q5— Section header —

5.1Study the pictures below and answer questions. OBLIQUE DRAWING ISOMETRIC DRAWING ORTHOGRAPHIC DRAWING

5.1.1

5.1.2What is the purpose of an engineering drawing? (1\

5.2It is important to a dhere to the standards of South African National Standard 10147 (SABS 0147\when handling Group 1 refrigerants to prevent situati ons that could result in loss of life, injury to persons or damage to refrigeration

5.2.1List FIVE regulations regarding the personnel operati ng and

5.2.2List the FIVE safety provisions incorporated in the construction

Q6— Section header —

6.1What is a biocide (2\

6.2List THREE areas , besides industry and as anti fouling agents, where biocides can be used. (3\ [5]5

Topics Identified

Business Plan

Mark Allocation

Total100 marks

Sections10 + 15 + 25 + 25 + 20 + 5 = 100 marks

Key Information

Websitewww.uniassignment.co

Paper information

TitleDocument

SubjectRefrigeration Practice

LevelNCV Level 3

Document typeQuestion paper

Year2020

MonthFebruary

Pages7

Downloads3

Examination context

Decade2020s

Years ago6y

SeasonSummer (SH)

Start daySaturday

Exam periodFebruary 2020

Days since exam2,442

About Refrigeration Practice 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 size252.4 KB

Pages7

Archived on8 September 2026

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