Engineering Science N2 — Memo

November 2022 — N2 — Engineering Science

N2 2022 Nated Engineering

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Q1— Section header —

1.12 cm (1\

1.2.16 km east 8 km west Displacement = 8 km 6 km = 2 km \( 872,17 (2\

1.3.1atuV \10\5,0(10 (3\

1.4.1\510(\2510( 25250 (3\

1.4.2m/s (2\ [15]15

Q2— Section header —

2.1A system of forces will be in equilibrium if the sum of the clockwise moments equals the sum of the anticlockwise moments about the same turning point (2\

2.2.1Take moments about B \11245(\6168(\5,9 269510085,9 37035.9 789,389 Take moments about A \5,9(\5, 1245(\5,9200(\5,

2.2.2NN 613613 [10]10

Q3— Section header —

3.1Potential energy is the energy an object possesses due to its mass (2\

3.2.1m = 3 t kg V = 92 km/h = 25,556 m/s \556,25\3000( 979663,704 J OR 629,6 3 J OR 630,979

3.2.2556,253000

3.3mgh 8,925 816,40 (2\ [7]7

Q4— Section header —

4.1A joule is the work done when a force of 1 N is applied over 1 m distance in the direction of a force. (2\

4.2.2bhW 800050 200 000 667,1666 (2\

4.3rFT 5,10 081,0 2081,0 162,0 OR 161,538m (3\ [10]10

Q5— Section header —

5.1Noisy Short distance between shafts Not flexible dler gear ntermediate gear (Any ONE\ (1\

5.37010 385,5 385,5130 769,10 (3\

5.4.1dnV \13,0( 254,4 (3\

5.4.2254,4 090,0 5,1 5,1 333,1533 TT 21 254,4333,15332300 254,4667,766

5.5dD (3\ [17]17

Q6— Section header —

6.1

6.3.1=0, (2\

6.3.2sin wF 10 sin wFF [9]9

Q7— Section header —

7.1Heat capacity of a substance is the quantity of heat required to raise the emperature of a substance by 1 kelvin or 1 (1\

7.2Liquid fuels petrol, paraffin etc Specific heat capacity tc Heat rejected is negative

7.5tLL 1233 000017,03,2 10211,8 LLL 3,210211,8 3008,2 (2\ [11]11

Q8— Section header —

8.1An i on is an atom that gained or lost an electron (1\

8.2Neutrons neutral Refining of materials Preparation of chemicals Corrosion [8]8

Q9— Section header —

9.1Fixed resistors Adjustable resistors (2\

9.2he current flowing in a circuit is directly proportional to the voltage 111 RR 11 11 (3\

9.4\103,1( 23 10327,1 000000018,0 10327.13 167,221 (3\

9.5(3\ [13] TOTAL:13

Mark Allocation

Sections15 + 10 + 7 + 10 + 17 + 9 + 11 + 8 + 13 = 100 marks

Paper information

TitleMemo

SubjectEngineering Science

LevelN2

Document typeNated Engineering

Year2022

MonthNovember

Pages9

Downloads3

Examination context

Decade2020s

Years ago4y

SeasonSpring (SH)

Start dayTuesday

Exam periodNovember 2022

Days since exam1,440

About Engineering Science examination preparation

Engineering Science combines physics principles with engineering applications. The examination covers mechanics, thermodynamics, electricity, and materials science at the relevant N-level.

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.

applying physics principles

selecting appropriate formulae

performing calculations with units

interpreting engineering scenarios

explaining scientific reasoning

A practical revision approach

Create a formula sheet organised by topic. The memorandum rewards correct formula identification, proper substitution, and accurate unit handling — always write the formula before substituting values.

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File size377.8 KB

Pages9

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