Platers' Theory N2 — Document

August 2019 — N2 — Platers' Theory

N2 2019 Nated Engineering

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🎯 100 marks ⏱️ 3h 📄 7 pages 📝 45 items found

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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 —

1.1escribe the working principle of the following machines:

1.1.1Plate bending roll

1.1.2Punching machine (2 4\ (8\

1.2Write down TWO safety precaution to consider when working with the bending roll. (2\ [10]10

Q2— Section header —

2.1The heel diameter of a 100 100 6 mm external angle iron ring is 2,5 m. Use the formula below to c alculate the length of the angle iron to form the ring

Q3— Section header —

3.1Write down FIVE advantage of using a well designed assembly jig in a welding shop. (5\

3.2Describe the purpose of the following

3.2.1A gusset plate (2\

3.2.2An assembly jig (3\ [10]10

Q4— Section header —

4.1FIGURE 1 below shows an outside view of a pipe contour marker. Name the FOUR label parts of the pipe contour marker below. Write only the answer next to the letter

4.2Explain w ith the aid of drawing what is meant by the term two hole on top when referring to pipe flanges lso indicate the pitch circle diameter (PCD\ on the flange. (4\

Q5— Section header —

Q6— Section header —

6.1Draw a freehand isometric drawing of an RSC with a box template in position. (4\

6.2State the use of template made from the following materials:

6.2.1Thin sheet plate

6.2.26

Q7— Section header —

7.1Write down TWO effects on steel when subjected to the following heat treatment processes

7.1.1Tempering

7.1.2

7.2.1Write down TWO effects on steel when alloyed with v anadium

7.2.28

Q8— Section header —

8.1Explain the effect of using flame cleaning nozzles. (3\

8.2Explain the use of the oxy acetylene profile cutter. (2\

8.3Write down THREE factors that influence the plate surface quality of an oxy acetylene gas weld. (3\

8.4Name FOUR metals which can be cut by means of plasma cutter. (4\ [12]12

Q9— Section header —

9.1escribe the meaning of the following welding terms without the aid of a drawing:

9.1.1Run

9.1.2Parental metal

9.1.3Welding face

9.1.4

9.2Name FOUR causes of poor penetration. (4\ [12]12

Q10— Section header —

10.1Determine the mass of a plate in kg to form a tank open on one end. The internal diameter of the cylinder is 1580 mm, and its height is 1560 mm and the thickness of the pl ate used to form the cylinder is 20 mm.

10.2.1

10.2.2

10.2.3

10.2.418

Mark Allocation

Total100 marks

Sections10 + 10 + 10 + 8 + 6 + 6 + 8 + 12 + 12 + 18 = 100 marks

Paper information

TitleDocument

SubjectPlaters' Theory

LevelN2

Document typeQuestion paper

Year2019

MonthAugust

Pages7

Downloads3

Examination context

Decade2010s

Years ago7y

SeasonWinter (SH)

Start dayThursday

Exam periodAugust 2019

Days since exam2,627

About Platers' Theory 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 size588.9 KB

Pages7

Archived on8 September 2026

File age46d

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