Industrial Electronics N5 — Document

April 2020 — N5 — Industrial Electronics

N5 2020 Nated Engineering

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🎯 100 marks ⏱️ 3h 📄 6 pages 📝 33 items found

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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 —

1.1Draw a neat, labelled gain versus frequency response curve of a simple:

1.1.1pass filter

1.1.2

1.2Give TWO applications of resonant circuits. (2\

1.3An adjustable frequency with a constant voltage of 200 is connected over a series RLC circuit. he frequency is adju sted until there is a maximum current flow of 10 mA at 5 kHz. Calculate:

1.3.1The values of R, L and C if the Q factor is 125 (8\

1.3.2The voltage across the inductor (2\ [16] QUESTION 2: POWER SUPPLIES16

2.1

2.2.1t is the main function of a voltage multiplier circuit? (2\

2.2.2Briefly give the disadvantage of a voltage multiplier circuit.

2.3Draw a neat, labelled circuit d iagram of a double voltage power supply which can supply both positive and ne gative voltages to operational amplifiers. (8\ [17]17

3.1Briefly explain the function of each of the following components in a common emitter amplifier:

3.1.1Emitter resistor (R

3.1.2

3.2The following value s of a common emitter are known: C(MAX\ = 12 mA; [18]18

Q4— Section header —

4.1Give TWO applications of an operational voltage follower. (2\

4.2.1Draw a neat, labelled circuit diagram of a differential operational amplifier that will monitor the difference between two voltage levels. (3\

4.2.2Determine the difference in input voltage if the output voltage is 15 V, the input resistance is 2 [10]10

Q5— Section header —

Q6— Section header —

6.1Sketch a neat, labelled circuit diagram of a thermistor temperature control ircuit that uses an alternating current excited bridge circuit. (4\

6.213

Q7— Section header —

7.1Indicate whether the following statements are TRUE or FALSE by writing only 'True' or 'False' next to the question number (7.1.1

7.1.3\ in the ANSWER BOOK

7.1.1An open loop system i s used for speed control of low power series motors.

7.1.2An open loop system is a simple on off system with fe edback network.

7.1.3

Q8— Section header —

Q9— Section header —

7.2Make a neat, labelled sketch of a t rigger circuit for a silicon controlled rectifier. (2\ [5]5

Mark Allocation

Total100 marks

Sections16 + 17 + 18 + 10 + 8 + 13 + 3 + 10 + 5 = 100 marks

Paper information

TitleDocument

SubjectIndustrial Electronics

LevelN5

Document typeQuestion paper

Year2020

MonthApril

Pages11

Downloads5

Examination context

Decade2020s

Years ago6y

SeasonAutumn (SH)

Start dayWednesday

Exam periodApril 2020

Days since exam2,383

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.

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Pages11

Archived on8 September 2026

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