Industrial Electronics N5 — Document

August 2021 — N5 — Industrial Electronics

N5 2021 Nated Engineering

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🎯 100 marks ⏱️ 3h 📄 5 pages 📝 33 items found

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Q1— Section header —

1.1Briefly define the term selectivity (2\

1.2A resistance of 20 (R \is connected in parallel with an unknown resistance (R

1.3100 capacitor is connected in parallel to a 0,01 H coil with a DC resistance of 5 . The circuit has a supply of 200 V, 50 Hz.

Q2— Section header —

2.1he following values of an LC filter circuit are known:

2.2Briefly describe the operation of shunt voltage regulator. (3\

2.3Draw neat, labelled circuit diagram of a high, stable, adjustable power supply. The circuit must make use of a regulator component and an operational amplifier. (5 [14]14

Q3— Section header —

3.1The following values of a common emitter amplifier with silicon transistor are known: + V CC =20 V = 15mA

3.1.1The beta gain (5\

3.1.2Emitter capacitor (2\ 8080175 Copyright reserved

3.2The following information about a common base amplifier that uses a PNP transistor is known: fb

3.2.1The voltage gain A (5\

3.2.2The input impedance Z (4\ [16] QU ESTION 4: OPERATIONAL AMPLIFIERS16

4.1The FIGURE below shows the circuit diagram of a summing amplifier The input voltages are: V

4.1Calculate the output voltage of the summing amplifier in FIGURE 1 (3\

4.2Draw a neat, labelled circuit diagram of a differential amplifier used to monitor the difference between two voltage levels. (3\

4.3Name ONE application of voltage adder. (1\

4.4Draw the circuit diagram of an active high pass filter with unity gain. (3\ [10] 808017510

Q5— Section header —

Q6— Section header —

6.1Explain the term resolution of a potentiometer (2\

6.2Draw diagram to show how strain gauges must be connected in a Wheatstone bridge and in the differential amplifier that observes the displacement equivalent signal. (5\

6.3Sketch a neat, labelled circuit diagram of a thermistor temperature control circuit that uses an alternating current excited bridge circuit (5\

6.4

Q7— Section header —

Q8— Section header —

8.1Briefly explain the function of the binary counter in a voltmeter (4\

8.2Explain why a Schmitt trigger is used in a frequency counter. (2\ [6]6

Q9— Section header —

9.1Draw a neat, labelled circuit diagram of Colpitts oscillator. (4\

9.2Explain, with the aid o f a neat circuit diagram and brief description, the operation of a monostable multivibrator. (8\ [12] TOTAL: 100 808017512

Mark Allocation

Total100 marks

Sections15 + 14 + 16 + 10 + 5 + 14 + 8 + 6 + 12 = 100 marks

Paper information

TitleDocument

SubjectIndustrial Electronics

LevelN5

Document typeQuestion paper

Year2021

MonthAugust

Pages11

Downloads3

Examination context

Decade2020s

Years ago5y

SeasonWinter (SH)

Start daySunday

Exam periodAugust 2021

Days since exam1,895

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 size338.7 KB

Pages11

Archived on8 September 2026

File age45d

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