Electrical Trade Theory N1 — Memo

August 2019 — N1 — Electrical Trade Theory

N1 2019 Nated Engineering

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Q1— Section header —

1.1Isolator volt coil Overload coil Earth leakage device Isolating link Distribution boards Start buttons Stop buttons

Q2— Section header —

2.1It is the movement of electrons in a specific direction through a material. (2\

2.2.1EMF = EMF number of cells = 2,2 = 13,2 V = 1,245 A

2.2.518

Q3— Section header —

3.1Permanent magnets 000 turns = 12 A = 113,636 A (3

3.3Secondary [12]12

Q4— Section header —

4.1The current deliv ering capacity that is required The duration of current flow The life expectancy o f the cell The shelf life of the cell The rela

Q5— Section header —

5.1It is the effective value of the current or voltage or that value of current which is equivalent to direct current when compared on an energy basis. (4\

5.2Three phase motors are more efficient and can be constructed in large sizes. (2\

5.3upply Supply Ammeter

5.4.2pply Supply Voltmeter (2 (6\ [14]14

Q6— Section header —

6.1It is a wire, cable or substance that is suitable for carrying electric curren (2\

6.2Must be readily available Must not be too expensive Portable appliance: portable drilling machine vacuum cleaner [16]16

Q7— Section header —

7.1.1Ohmmeter

7.1.2Megger/ Insulation resistance tester

7.1.3Insulation resistance tester megger\

7.1.4Ohmmeter (4 (4\

7.2It shall not exceed 0,2

7.3It is a semiconductor diode which emits light when a voltage is applied across it. (2\

7.4= 6 = 26

7.5Blue = 6 Orange = 3; Yellow = 4; Silver = R = 630 000 = 630 [16] TOTAL:16

Mark Allocation

Sections11 + 18 + 12 + 13 + 14 + 16 + 16 = 100 marks

Paper information

TitleMemo

SubjectElectrical Trade Theory

LevelN1

Document typeNated Engineering

Year2019

MonthAugust

Pages5

Downloads6

Examination context

Decade2010s

Years ago7y

SeasonWinter (SH)

Start dayThursday

Exam periodAugust 2019

Days since exam2,628

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 size214.9 KB

Pages5

Archived on8 September 2026

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