Industrial Electronics N3 — Memo

November 2022 — N3 — Industrial Electronics

N3 2022 Nated Engineering

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Q1— Section header —

1.1.5

1.2.1False

1.2.2True

1.2.3True

1.2.4True

1.2.5

1.3.1closed loop

1.3.2accuracy

1.3.3forced commutation

1.3.4photosensitive cells

1.3.5

1.4.520

Q2— Section header —

2.1EFAB =1 =1 (1\ EDCB +1 (2\

2.2.1

2.2.2=1,6 A (2\

2.2.318

Q3— Section header —

3.1.1(3\

3.1.2(2\

3.2(4\

3.3(3\

3.4The optocoupler is a method of electrically isolating one part of a circuit from another. (1\

3.5The bridge is in balance as long as the resistor ratio is equal to each other. If the ratio is not equal to each other the difference will show as a potential difference over the galvano meter. (4\

3.6.1The resistance of an electrical conductor can change with the expansion and contraction due to an external force applied. (1\

3.6.2Displacemen [20]20

Q4— Section header —

4.1(4\

4.2=8 (3\

4.3(3\

4.4.1(1\

4.4.2(2\

4.5(4\

4.6(4\

4.7(3\ [24]24

Q5— Section header —

5.1(5\

5.2After this, it is fed to horizontal deflection plates. This process requires approximately 100 ns. Thus, it is crucial to delay the signal generated by the vertical amplifier too in order to maintain synchroni

5.3The emitted electrons further pass through a small hole present in the control grid The electrons pas through the pre accelerating anode through which the beam gets accelerated and

5.4.1(4\

5.4.2[18] TOTAL SECTION B: GRAND TOTAL:18

Mark Allocation

Sections20 + 18 + 20 + 24 + 18 = 100 marks

Paper information

TitleMemo

SubjectIndustrial Electronics

LevelN3

Document typeNated Engineering

Year2022

MonthNovember

Pages10

Downloads5

Examination context

Decade2020s

Years ago4y

SeasonSpring (SH)

Start dayTuesday

Exam periodNovember 2022

Days since exam1,440

About Industrial Electronics examination preparation

Industrial Electronics covers semiconductor devices, amplifiers, power supplies, and digital logic circuits. The examination tests both theoretical knowledge and practical circuit analysis.

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.

semiconductor theory

circuit analysis

component identification

digital logic principles

interpreting circuit diagrams

A practical revision approach

Practice circuit analysis with correct formulae and units. The memorandum rewards accurate calculations, correct component identification, and proper interpretation of circuit diagrams.

File details

File size1.03 MB

Pages10

Archived on8 September 2026

File age46d

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