Industrial Electronics N4 — Memo

April 2020 — N4 — Industrial Electronics

N4 2020 Nated Engineering

↓ Download PDF 📄 268.4 KB

Preparing document

📋 Document Analysis

📄 7 pages 📝 34 items found

See full analysis

Questions — A Preview of What to Expect in the Document

This section provides a quick preview of questions from the document. It may not display every question or the complete wording of each one. For the full content, including diagrams, tables and other information, view the original PDF above.

Q1— Section header —

1.1.1In any linear multiple source network, the resultant current in any branch is the algebraic sum of the current that would be produced by each source acting separately.

1.1.2

1.2Consider loop ABCA 0 = 10I + 5I 20I 0 = 15I 20I

Q2— Section header —

2.1

Q3— Section header —

3.1.1Process of generating free electrons

3.1.2Process of generating holes

3.1.3

3.2(6\ [12]12

Q4— Section header —

4.1.1The ratio of the number of turns in the primary to the number in the secondary is the turns ratio of the transformer

4.1.2Process of converting an alternating voltage to a unidirectional voltage

4.1.3The peak voltage appearing across a diode during the reverse condition period

4.1.4

4.2= 0, 637 V 637 169, 108, 102 PIV 169, 706

Q5— Section header —

5.1the voltage collector (V \. T he base current increases as the base emitter voltage (V increases. Increase in V result in an increase in

5.2.1= 1, 581 = 1, 581 = 126, 491 20log126, 491/30 = 12,

Q6— Section header —

6.1\R ((25 30\/25\ 11/5 17, [10]10

Q7— Section header —

7.1.1When a negative potential is applied to the anode with respec t to the cathode, PN is reverse biased and as a result, there is no current flowing through the thyristor.

7.1.2

7.2(5\

7.3It compares the output with the reference input (1\ [10]10

Q8— Section header —

8.1are the ratio arms equal to each other is the rheostat arm and has a value equal to the strain gauge resistance. When the gauge is unstrained, the bridge is balanced and the voltmeter shows

8.2.1The bridge will be out of balance due to change in length and in the area and resistance

8.2.2

8.3When incident light falls on the device, its resistance decreases causing a current to flow (2\

Q9— Section header —

9.11/10 100 [11] TOTAL:11

Mark Allocation

Sections14 + 10 + 12 + 12 + 12 + 10 + 10 + 11 = 91 marks

Paper information

TitleMemo

SubjectIndustrial Electronics

LevelN4

Document typeNated Engineering

Year2020

MonthApril

Pages7

Downloads2

Examination context

Decade2020s

Years ago6y

SeasonAutumn (SH)

Start dayWednesday

Exam periodApril 2020

Days since exam2,385

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 size268.4 KB

Pages7

Archived on8 September 2026

File age47d

ContributorFreeMode

Fingerprint8F82659F3FC3

Questions and learner discussion

No questions or discussions have been posted yet.