Welding NCV Level 4 — Document

November 2019 — NCV Level 4 — Welding

NCV Level 4 2019 NCV Engineering

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🎯 10 marks ⏱️ 3h 📄 6 pages 📝 33 items found

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Q1— Section header —

1.1Various options are given as possible answers to the following questions. Choose the answer and write only the letter (A D\ next to the question number (1.1.1

1.1.5\n the ANSWER BOOK.

1.1.1joints. butt fillet edge lap

1.1.2Name the type of groove shown below that is commonly used to prepare the edges for butt welding. Bevel groove

1.1.3Name the THREE phases of gas backing. Primary, tertiary and welding Primary, s

1.1.4copper lead brass iron

1.1.5resistan cast iron

1.2List FIVE properties of c opper lloys. (5\

1.3Explain the set up of a Shielded Metal arc Welding (SMAW\ process equipment

1.4List FIVE factors that influence the size of electrode used for hielded etal

Q2— Section header —

2.1Direct urrent Earth Negative (DCEN\ can be used for Shielded Metal rc

2.2Explain the chemical process that occurs during Shielded Metal rc Welding (SMAW\ (5\

2.3List FIVE pre checks that should be carried out on a pipe before it can be welded using Shielded Metal

2.4Give FIVE reasons why it is important to clean a pipe after welding it with Shielded Metal rc Welding (SMAW\ (5\ [20]20

Q3— Section header —

3.1Explain the Gas Tungsten rc Welding (GTAW\ process. (4\

3.2FIGURE 1 below indicates the equipment that constitute the Gas Tungsten rc Welding (GTAW\ set

3.3Choose a description from COLUMN B that matches a item in COLUMN A. Write only the letter (A K\next to the question number (3.3.1

3.3.10\in the ANSWER BOOK. COLUMN COLUMN

3.3.10A collet The gas nozzle Travel angle of a Gas Tungsten rc Welding torch Tungsten A weld pool

Q4— Section header —

4.1Name TWO differences between a Gas Tungsten rc Welding (GTAW\ filler rod and

4.2List FIVE causes of Incomplete Fusion during the Gas Tungsten Arc Welding (GTAW\ process. (5\

4.3Explain how the Overhead Weld Position is carried out during Gas Tungsten Arc Welding (GTAW\. (5\

4.4Draw a Tungsten Inert Gas (TIG\welding gun that is used in the Gas Tungsten Arc Welding process. Indicate the ozzle,

Q5— Section header —

5.1Before MIG welding can begin, all tools and equipment must be prepared Describe how you w ould select or prepare the equipment for Metal Inert

5.2Explain why the aluminium oxide coating on aluminium needs to be removed before MIG welding can take place. (5\

5.3Name TWO methods that can be used to clean a gas nozzle on the MIG gun. (2\

5.4State THREE functions of the Metal Inert Gas (MIG\re feeder gun (3\

5.5FIGURE 2 indicates the different types of welding symbols. List FIVE types of information that can be identified from the welding symbol below. FIGURE 2 (5\ [20] TOTAL20

Mark Allocation

Total100 marks

Sections20 + 20 + 20 + 20 + 20 = 100 marks

Paper information

TitleDocument

SubjectWelding

LevelNCV Level 4

Document typeQuestion paper

Year2019

MonthNovember

Pages6

Downloads3

Examination context

Decade2010s

Years ago7y

SeasonSpring (SH)

Start dayFriday

Exam periodNovember 2019

Days since exam2,536

About Welding 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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