Mechanical And Drawing Office Orientation N4 — Document

August 2018 — N4 — Mechanical And Drawing Office Orientation

N4 2018 Nated Engineering

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🎯 100 marks ⏱️ 3h 📄 5 pages 📝 35 items found

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Questions — A Preview of What to Expect in the Document

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Q1— Section header —

1.1List the FOUR levels of graphic communication in the correct order. (4\

1.2Make a neat sectional drawing of the transition fit of a shaft into a hole Indicate the following on the drawing: (3\ Minimum interference (1\ Maximum clearance (1\

Q2— Section header —

2.1Give FIVE pieces of i nformation that should be on a drawing register. (5\

2.2State FIVE important aspects that should be recorded when a drawing is issued. (5\ [10] QUESTION ENGINEERING MATERIALS AND HEAT TREATMENT10

3.1Name FIVE main properties of aluminium (5\

3.2Give THREE properties and THREE uses of chrome in the industry. (3 + 3\ (6\

3.3Give TWO properties of steel after going through a tempering process (2\

3.4Name TWO non ferrous composition elements used to make brass. (2\ [15] 809018415

Q4— Section header —

4.1Indicate whether the following statements are TRUE or FALSE Cho ose the answer and write only 'True' or 'F alse' next to the question nu mb er

4.1.5\ the ANSWER BOOK.

4.1.1A plain split bearing is used where it is impossible to use a solid bearing.

4.1.2Footstep bearings support shafts that rotate in the vertical position.

4.1.3Pitch is the distance from a point on a thread to a corresponding point on an adjacent thread.

4.1.4A lead is the distance a thread will advance axially in one complete revolution.

4.1.5

4.2Wha t does ISO stand for? (1\

4.3Name FOUR surfaces that a shaping machine can produce (4\ [10]10

Q5— Section header —

Q6— Section header —

6.1Give the disadvantage of a plate clutch. (1\

6.2Briefly explain with the aid of a basic , fully labelled freehand drawing the working principle of a centrifugal clutch. (8\ [9]9

Q7— Section header —

7.2Give THREE reasons for noise and vibration on a bearing. (3\

7.3Briefly explain full pressure lubricating system (2\ [10]10

Q8— Section header —

8.1Calculate the pitch (p\f a gear system f the module (m\f a gear is 10. (2\

8.2State FOUR important aspects to regularly inspect in gear drives. (4\

8.3Use TWO freehand drawings to show the differences between a single spur gear and a

Q9— Section header —

9.1Make a fully labelled free hand drawing of an expansion diaphragm (4\

9.2Briefly explain the operational principle of a ge ar pump. (5\

9.3Give FIVE advantages of centrifugal pumps over reciprocating pumps. (5\ [14] TOTAL: 10014

Mark Allocation

Total100 marks

Sections12 + 10 + 15 + 10 + 10 + 9 + 10 + 10 + 14 = 100 marks

Paper information

TitleDocument

SubjectMechanical And Drawing Office Orientation

LevelN4

Document typeQuestion paper

Year2018

MonthAugust

Pages5

Downloads1

Examination context

Decade2010s

Years ago8y

SeasonWinter (SH)

Start dayWednesday

Exam periodAugust 2018

Days since exam2,993

About Mechanical And Drawing Office Orientation examination preparation

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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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A practical revision approach

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File size226 KB

Pages5

Archived on8 September 2026

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