Toolmakers' Theory N2 — Document

August 2021 — N2 — Toolmakers' Theory

N2 2021 Nated Engineering

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🎯 100 marks ⏱️ 3h 📄 7 pages 📝 49 items found

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Q1— Section header —

1.1Name FIVE safety precautions as applicable when using hand tools (5\

1.2Identify THREE unsafe conditions in the FIGURE 1 below FIGURE 1 (3\

1.3Name THREE responsibilities of the person in charge in a machine shop or tool room (3\ [11]11

Q2— Section header —

2.1Name the main properties of steel when the following elements are added to it:

2.1.1Carbon

2.1.2

2.2Name SIX alloying elements that are added to steel. (6\

2.310

Q3— Section header —

3.1Name TWO types of furnaces used for heat treatment. (2\

3.2Describe TWO of the disadvantages of the use of crude oil furnaces for heat treatment. (2\

3.3Identify and name all the parts (1 7\of the Rockwell testing machine shown FIGURE 2 below FIGURE 2 (7\ [11]11

Q4— Section header —

4.1Name THREE types of fits used in a tool room or machine shop (3\

4.2You have to manufacture a shaft and a bush on a lathe. The sizes are as follows: 03 00

4.3A loose running on a bearing is given as 45H9 d10. Explain the meaning of the H9 and the d10

Q5— Section header —

5.1

5.2Determine the minimum gauge blocks require to build the distance in

Q5— Section header —

5.3Explain the reason for mak ing use of wear blocks in a set of slip gauges (1\ [10]10

Q6— Section header —

6.1How would you classify the THREE main groups of gauges? (3\

6.2Make a neat drawing of a taper plug gauge. (1\

6.3Explain the reason for the flat on a standard plug gauge. (1\

6.4For w hat w ould you use standard plug gauges? (1\

6.5Name FOUR advantages of using a gauge. (4\ [10] 1102020210

7.1Name the different parts (1 5\of the following flat surface locator in FIGURE 4 FIGURE 4 (5\

7.2Make a neat and clear drawing of a drill screwed bush. (1\

7.3Describe the difference between a jig and a fixture (2\

7.4Explain with aid of sketch how you w ould locate a round workpiece or shaft for marking off. (2\ [10]10

Q8— Section header —

8.1Make a neat and clear drawing of the following rake angles of a cutting tool:

8.1.1Positive rake

8.1.2Zero or neutral rake

8.1.3Negative rake (3 1\ (3\

8.2Name FIVE uses of single point cutting tools (5\

8.3In which direction does a left hand cutting tool cut (1\

8.4In which direction does a right hand cutting tool cut (1\ [10]10

Q9— Section header —

9.1Make a neat and clear drawing to show the lip length and height o a drill bit. (2\

9.2Why do highspeed steel ( HSS drills have flutes in their body? (2\

9.3Name FIVE types of reamers use in the engineering industry. (5\

9.4What type of tool is used to remove a drill bit from a orse taper sleeve? (1\ [10]10

Q10— Section header —

10.1Name FOUR aspects to be consider ed when manufacturing dies. (4\

10.2Name THREE methods that can be used in forging to stamp and manufacture components. (3\ [7] TOTAL: 100 110202027

Mark Allocation

Total100 marks

Sections11 + 10 + 11 + 11 + 10 + 10 + 10 + 10 + 10 + 7 = 100 marks

Paper information

TitleDocument

SubjectToolmakers' Theory

LevelN2

Document typeQuestion paper

Year2021

MonthAugust

Pages9

Downloads4

Examination context

Decade2020s

Years ago5y

SeasonWinter (SH)

Start daySunday

Exam periodAugust 2021

Days since exam1,898

About Toolmakers' 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

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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

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checking answers

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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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