Mechanotechnics N5 — Document

December 2023 — N5 — Mechanotechnics

N5 2023 Nated Engineering

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🎯 100 marks ⏱️ 3h 📄 6 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 —

1.1Calculate the number of internal teeth of the ring gear (2\

1.2Calculate t he speed of the output shaft and the amount of torque that is transmitted if the efficient of the system is 92% (8\ [10]10

Q2— Section header —

2.1List SIX safety devices that are used to prevent rope haulages from reversing when stopped. (6\

2.2

2.2.1The space between tubs (4\

2.2.2The number of tubs on each side (3\

2.2.3The breaking strength of the rope (7\ [20] (8190225\ Copyright reserved Please turn over20

Q3— Section header —

3.1The delivery speed of the gearbox (8\

3.2The velocity ratio of the gearbox (2\ [10]10

Q4— Section header —

4.1The length of the belt if the distance between the two pulleys is 12 m (2\

4.2The mass of the belt (2\

4.3The speed (neglect the thickness of the belt (3\

4.4The tension of tight and slack of the belt, considering centrifugal force (9\

4.5The power in the belt (4\ [20] Worm (8190225\ Copyright reserved20

Q5— Section header —

5.1The tractive effort to overcome frictional resistance (2\

5.2The tractive effort to overcome gravity (2\

5.3The tractive effort to accelerate the train (2\

5.4The power required at a speed of 65 km/h (4\ [10]10

Q6— Section header —

6.1Name WO categories of bucket elevator (2\

6.2A bucket elevator is used to lift coal with a density of 890 kg/m at a rate of 550 ton/h through a vertical height of 65 m. The chain speed is 0,45 m/s and

6.2.1The volume delivered per second (4\

6.2.2The output power (6\

6.2.3The efficiency of the system (3\ [15]15

Q7— Section header —

Q8— Section header —

8.1What is the purpose of a flywheel in a motor car engine? (1\

8.2A flywheel initially at rest is subjected to a constant angular acceleration of 1,5 rad/s for 47 seconds. The flywheel is then decelerated until it comes to rest 68 seconds later. Calculate the following:

8.2.1The maximum angular velocity attained

8.2.2The angular deceleration (2 2\ (4\ [5] TOTAL: 1005

Mark Allocation

Total100 marks

Sections10 + 20 + 10 + 20 + 10 + 15 + 10 + 5 = 100 marks

Paper information

TitleDocument

SubjectMechanotechnics

LevelN5

Document typeQuestion paper

Year2023

MonthDecember

Pages9

Downloads2

Examination context

Decade2020s

Years ago3y

SeasonSummer (SH)

Start dayFriday

Exam periodDecember 2023

Days since exam1,047

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

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 size308.2 KB

Pages9

Archived on8 September 2026

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