Welding NCV Level 4 — Memo

November 2023 — NCV Level 4 — Welding

NCV Level 4 2023 NCV Engineering

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Q1— Section header —

1.1.10

1.2lectrode Electrode holder Work clamp Welding cables The intense heat of the arc melts the tip of the electr ode and the surface of the work piece close to the arc. Tiny globules of molten metal rapidly f

Q2— Section header —

2.1(5\

2.2Heat input Weld preparation Joint design

2.3In enclosed spaces there should be ventilation to remove dangerous fumes and gases. Respirator can be used if the ventilation is poor. The welder should understand the Material Safety Data Sheets (MSDS\ of

2.4.1The a rc length is too long. The arc length must be a s close as possible to the work piece [20]20

Q3— Section header —

3.1Flow meter Cylinder/Gas cylinder/Shielding Power source/Welding m achine Remote control/Foot pedal Earth clamp Tungsten t Welding torch

3.2

3.3(4\

3.4Operating on r everse polarity Incor rect electrode size for current Excessive heating in the nozzle Contaminated electrode [20]20

Q4— Section header —

4.1ADVANTAGES DISADVANTAGES

4.1.1High quality weld Equipment is costly

4.1.2All welding positions High degree of skill required

4.1.3No slag Slower process

4.1.4No spatter UV rays are produced

4.1.5Joins dissimilar metals Cannot weld in windy conditions (5 (10\

4.2Switch on the welding power source Select the current type Select and prepare the correctly chosen electrode Select the appropriate filler rod Ensure that the base metal is clean

4.3After use, s hielding gas cylinders must be closed by hand, stored in an upright position, secured with a chain and the cylinder s must be stored in a cool damp free store room.

Q5— Section header —

5.1.5

5.2Wire stick out refers to the length of un melted electrode wire sticking out from the tip of the contact tube of the welding gun and does not include the length of the arc. The composition of the metal being welded.

Mark Allocation

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

Paper information

TitleMemo

SubjectWelding

LevelNCV Level 4

Document typeNCV Engineering

Year2023

MonthNovember

Pages5

Downloads4

Examination context

Decade2020s

Years ago3y

SeasonSpring (SH)

Start dayWednesday

Exam periodNovember 2023

Days since exam1,074

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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File size243.3 KB

Pages5

Archived on8 September 2026

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