Electrical Trade Theory N1 — Document

November 2023 — N1 — Electrical Trade Theory

N1 2023 Nated Engineering

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🎯 100 marks ⏱️ 3h 📄 4 pages 📝 45 items found

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Questions — A Preview of What to Expect in the Document

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Q1— Section header —

1.1Explain the reason for housekeeping. (3\

1.2Mention THREE aspects with regard to machine guarding. (3\

1.3Name any FOUR procedures to isolate or lock out a circuit for inspection and repair purposes (4\ [10]10

Q2— Section header —

2.1State any FIVE causes of fire. (5\

2.2State the use of the following hand tools:

2.2.1Crimping tool

2.2.2Cable knife

2.2.3Hacksaw

2.2.4Bending spring

2.2.510

Q3— Section header —

3.1Define ohm s law. (5\

3.2are connected in series to make respectively are first connected in parallel and then across the terminals of the battery. Calculate the following electrical quantities:

3.2.1The total EMF of the circuit (2\

3.2.2The total internal resistance of the circuit (2\

3.2.3The total resistance of the circuit (5\

3.2.4The current flowing through the cells (2\

3.3Briefly explain how temperature affects the resistance of the following:

3.3.1Pure metals (2\

3.3.2Alloys (3\

3.3.3Carbon (3\ 11041861 Copyright reserved

3.4What do you understand by a neg ative temperature coefficient? (3\

3.5The coil of a relay is wound with copper wire at 0 C. After being energised for several hours, the coil reached a temperature of 70

Q4— Section header —

4.1State FIVE characteristics of good insulators. (5\

4.2Complete the table below. Write only the answer next to the question number (4.2.1

4.2.6n your ANSWER BOOK. Size Conductor size Earth leakage 63 A or 82 A

4.2.1Stove

4.2.24 mm or 6 mm Geyser

4.2.32, 5 mm Socket outlets 20 A

4.2.4ights 10 A or 15 A

4.2.5Bell

4.2.61 mm (6 2\ (12\

4.3Draw and label the lighting sub circuit (one way switching\ (10\

4.4What is the function of a circuit breaker? (3\ [30]30

Q5— Section header —

5.1What is the purpose of a polarity test? (3\

5.2List any TWO instruments used for polarity test (2\

5.3Name THREE types of magnets. (3\

5.4Give any FOUR properties of magnetic lines of flux. (4\

5.5State Faraday s first law of electromagnetic induction. (3\

5.6Define the term renewable energy (3\

5.7Explain the term greenhouse gases (2\ [20] TOTAL: 100 1104186120

Multiple Choice Options

C)After being energised for several hours,

C)Calculate the resistance of the coil at 70

Mark Allocation

Total100 marks

Sections10 + 10 + 30 + 30 + 20 = 100 marks

Paper information

TitleDocument

SubjectElectrical Trade Theory

LevelN1

Document typeQuestion paper

Year2023

MonthNovember

Pages5

Downloads2

Examination context

Decade2020s

Years ago3y

SeasonSpring (SH)

Start dayWednesday

Exam periodNovember 2023

Days since exam1,074

About Electrical Trade Theory examination preparation

This TVET examination resource can be used as part of a structured revision programme. Past papers are most useful when learners attempt questions independently, work within a realistic time limit, and review their answers afterwards.

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.

understanding question requirements

applying subject knowledge

working under time constraints

checking answers

identifying revision priorities

A practical revision approach

Start by completing the resource without looking at the memorandum. Review incorrect and incomplete answers afterwards and make a short revision list based on the areas that caused difficulty.

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File size259.1 KB

Pages5

Archived on8 September 2026

File age45d

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