Mechanotechnics N4 — Document

November 2022 — N4 — Mechanotechnics

N4 2022 Nated Engineering

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🎯 100 marks ⏱️ 3h 📄 6 pages 📝 28 items found 📚 1 topics

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Q1— Section header —

1.1Three production methods that are generally used in the manufacturing industry are mass production, batch production and individual production.

1.1.1Briefly discuss what is meant by individual production (2\

1.1.2Give ONE example where the individual production method could possibly be applied. (1\

1.1.3Give SEVEN characteristics of batch production. (7\

1.2

1.3Give TWO advantages of electrostatic spray painting. (2\

1.4Make a labelled sketch of needle lubricator (5\

1.5The materials from which bearings are made should have certain properties ive FIVE of these properties. (5\ [30]30

Q2— Section header —

2.1Output power needed from electric motor to drive the system (7\

2.2Belt tensions T and T (7\ [14] (8190194\14

Q3— Section header —

3.1A drill with a diameter of 20 mm is used to drill a hole in a workpiece at 500 r/min. Take the motor power as 700 W and the efficiency of drive as 70%. Find the force exerted on each of the TWO cutting edges of the drill.

3.2The moving table of a horizontal milling machine has a mass of 500 kg. The workpiece mounted on the table has a mass of 13 kg, while the clamping screws and clamps have a mass of 4 kg. The feed of the table is 250 mm/min

Q4— Section header —

4.1Study FIGURE 1 below which shows the dimensions of an internal dovetail. Use these dimensions to calculate the diameter of the roller used in this test. (Construction of triangles must be shown on the

4.2FIGURE 2 below shows an internal dovetail to be tested with TWO 15 mm diameter precision rollers. Use the measurements on the diagram

Q5— Section header —

5.1Study FIGURE 3 below, which shows a simple epicyclic gear drive . It comprises ear heel B with 100 teeth

5.2A set of spur gears meshing with each other has a velocity ratio of 2,5:1 and a module of 6 mm f the pinion has 35 teeth, calculate:

5.2.1The pitch circle diameter of both gears

5.2.214

Q6— Section header —

6.1FIGURE 4 below shows two reservoirs, A and B. The pipe is 3,2 km long. The difference between the two reservo rs is 35 m. Assume that the flow rate of the water in the pipe is 0,65 m /s and the coefficient of friction is 0,004.

6.1.1The diameter of the pipeline

6.1.2

6.2A venturi meter with a th oat diameter of 140 mm is in a pipe with a diameter of 230 mm. The discharge rate of the pipe is 120 /s. Use coefficient of delivery of 0,96 and assume that the ventur

Topics Identified

Business Functions

Mark Allocation

Total100 marks

Sections30 + 14 + 14 + 14 + 14 + 14 = 100 marks

Paper information

TitleDocument

SubjectMechanotechnics

LevelN4

Document typeQuestion paper

Year2022

MonthNovember

Pages9

Downloads2

Examination context

Decade2020s

Years ago4y

SeasonSpring (SH)

Start dayTuesday

Exam periodNovember 2022

Days since exam1,442

About Mechanotechnics 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

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 size439.2 KB

Pages9

Archived on8 September 2026

File age48d

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