Industrial Electronics N1 — Document

November 2023 — N1 — Industrial Electronics

N1 2023 Nated Engineering

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🎯 100 marks ⏱️ 3h 📄 6 pages 📝 42 items found

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Q1— Section header —

1.1Convert the following:

1.1.120 F to nano farads.

1.1.2100 pF to nano farads.

1.2Choose a term from COLUMN B that matches a description in COLUMN A. Write only the letter (A J\next to the question number (1.2.1

1.2.10\in the ANSWER BOOK. COLUMN A COLUMN B

1.2.10Mainly used in reverse bias Conducts in forward bias Conducts when incident light falls upon it Voltage controlled variable capacitance Radiates light energy

1.3Name FOUR advantages of digital meters. (4\

1.4State FOUR properties of electromagnetic induction. (4\ [20] (8080641\ Copyright reserved20

Q2— Section header —

2.1The ammeter reading if an ammeter is connected in series with the lamps. (6\

2.2The readings on all the voltmeters if a voltmeter is connected across each lamp. (6\

2.3The total power across the first two lamps (L1 and L2\ (4\

2.4If 1 is to be replaced with a resistor of 470 with 10% tolerance

Q3— Section header —

3.1.5Inductance (5\

3.2A copper conductor with a resistance of 1 73 10

3.3A circuit consists of two cells each with an EMF of 1, and an internal resistance of 0, two resistors of

3.3.1Draw a neat, labelled circuit diagram.

3.3.2Calculate t he total current flowing through the circuit.

3.3.3Calculate t he power across each of the external resistors. (3 4\ (12\ [20]20

Q4— Section header —

4.1Draw a neat, labelled diagram of each of the following waveforms and name ONE application of each.

4.1.1Saw tooth wave

4.1.2Square wave (2 3\ (6\

4.2Refer to FIGURE 2 below and determine the following: FIGURE 2

4.2.1The turns ratio. (1\

4.2.2The secondary voltage, if the transformer is supplied from a 220 supply. (3\

4.2.3The secondary current if the primary current is 2 A. (3\

4.3Name FOUR faults that can occur in a transformer. (4\

4.4Briefly explain the term mutual induction (3\ [20] T1 10:1 (8080641\20

Q5— Section header —

5.1Two capacitors, C and C , with values of 10 F and 12 F respectively, are connected in series. The circuit is connected across a 12 V supply. Calculate the following:

5.1.1The total charge. (5\

5.1.2The voltage across each capacitor. (4\

5.2Complete the following sentences by filling the missing word or words. Write only the answer next to the question number (5.2.1

5.2.4in the ANSWER BOOK.

5.2.1An ohm meter must always be connected in

5.2.2Thermistors are mainly used for measurements.

5.2.3The colour gold on a resistor colour coding represents tolerance.

5.2.4The larger the cross sectional area of a conductor, the lesser the (4 1\ (4\

5.3Draw a neat, labelled circuit diagram of common emitter amplifier which uses an NPN transistor. Show the input and output waveforms. (7\ [20] TOTAL: 10020

Mark Allocation

Total100 marks

Sections20 + 20 + 20 + 20 + 20 = 100 marks

Paper information

TitleDocument

SubjectIndustrial Electronics

LevelN1

Document typeQuestion paper

Year2023

MonthNovember

Pages7

Downloads3

Examination context

Decade2020s

Years ago3y

SeasonSpring (SH)

Start dayWednesday

Exam periodNovember 2023

Days since exam1,073

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 size3.94 MB

Pages7

Archived on8 September 2026

File age45d

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