Elektrotegnologie N3 — Document

April 2018 — N3 — Elektrotegnologie

N3 2018 Nated Engineering

↓ Download PDF ✓ View Memorandum 📄 433.3 KB

Preparing document

📋 Document Analysis

🎯 100 marks 📄 6 pages 📝 39 items found

See full analysis

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.

1.1ee TWEE redes waarom mika gebruik word as isoleermateriaal tussen d ie segmente van die kommutator in n GS

1.2Hoekom is die segmente van n GS masjien wigvormig? (2\

1.3Teken n netjiese, volledig benoemde kringdiagram van afsonderlik opgewekte GS generator.

1.4oem TWEE s oorte borsels wat in n GS masjien gebruik word. (2\ [10]10

2.1oem DRIE soorte selfopwekgenerators (3\

2.2Teken n netjiese, volledig benoemde kringdiagram van n seriegenerator series wound

2.3Gee n kort beskrywing van kumulatiewe serieparallelgenerator cumulative

2.4Noem die stroom wat deur kompenseerwikkelings vloei wat gebruik word om kommutasie te verbeter. (1\ 10] VRAAG

3.1Ma ak n netjiese, volledig benoemde skets van n hand vlakplaataansitter wat gebruik word om

3.2GS omtakmotor ( DC shunt motor

4.1oem TWEE soo rte ysterverlies wat voorkom in die veldpole, poolskoene en ankerkerne van GS masjiene. (2

4.2

4.3Die volgende data is aangeteken in n GS otor wat deur middel van die tourem

5.1n Wisselende EMK ( alternating EMF \word verteenwoordig deur die volgende uitdrukking: e = 240 sin (471,239 t\

5.1.1Maksimum waarde van hierdie EMK (1\

5.1.2Gemiddelde waarde van die EMK (1\

5.1.3WGK waarde RMS value van die EMK

5.1.4Vormfaktor (1\

5.1.5ekwensie (2\

5.2Gee VIER uitwerkings wat n swak arbeidsfaktor op n WS kring het

6.1Stroom wat deur elk van die takke ( branches \an die kring vloei (5\

6.2otal e stroom wat deur die kring vloei (2\

6.3mpedan sie van die kring (1\

6.4Arbeidsfaktor waarteen die kring werk. Gee ook die aard van die arbeidsfaktor. (2\ [10] VRAAG10

7.1Lei n formule af wat gebruik kan word om te bepaal watter frekwensie resonansie in n ser iekring sal produseer.

7.2Teken netjiese, volledig benoemde kringdiagram wat aantoon hoe die statorwikkelings van n driefas

7.3n Swak arbeidsfaktor verlaag die rendement van installasie plant

7.4Dui aan of die volgende stelling WAAR of ONWAAR is. Skryf slegs waar of onwaar langs die vraagnommer

8.1Toon, deur middel van n netjiese, volledig benoemde kringdiagram, hoe DRIE enkelfasetransformators verbind is om n deltastertransformator te vorm. (4\

8.2

8.2.1Windingsverhouding van die transformator (2\

8.2.2

8.2.3Vollasaanslag van die transformator in kVA (2\ [10] 11040343\10

9.1Noem TWEE funksies van die beheermeganisme van n aanwys tipe instrument ( indicating

9.2Die dinamometer tipe instrument is n voorbeeld van draaispo elinstrument.

9.3Ma ak n netjiese, volledig benoemde s kets om aan te toon hoe ammeter, voltmeter en wattmeter aan

10.1Gee TWEE funksies van diodes wat in gelykrigterkringe gebruik word. (2\

10.2Teken n skakelkring ( switching circuit \r die EN

10.3

Mark Allocation

Total100 marks

Sections10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 = 80 marks

Paper information

TitleDocument

SubjectElektrotegnologie

LevelN3

Document typeQuestion paper

Year2018

MonthApril

Pages9

Downloads1

Examination context

Decade2010s

Years ago8y

SeasonAutumn (SH)

Start daySunday

Exam periodApril 2018

Days since exam3,114

About Elektrotegnologie 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.

File details

File size433.3 KB

Pages9

Archived on8 September 2026

File age45d

ContributorFreeMode

FingerprintB9216A7FC701

Questions and learner discussion

No questions or discussions have been posted yet.