Elektriese Beginsels En Praktyk NCV Level 3 — Memo

Februarie 2020 — NCV Level 3 — Elektriese Beginsels En Praktyk

NCV Level 3 2020 NCV Engineering

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Q1— Section header —

1.1.5

1.2.5

1.3

1.4Die weerstand van isolasiemateriaal verminder namate die temperatuur toeneem. (2\ [15]15

Q2— Section header —

2.1Magnetomotoriese krag is die krag van n magneetveld in n rol draad. (2\

2.3

2.4

2.5.1

2.5.2

2.6Wanneer die skakelaar gedruk word, beweeg stroom deur die spoel en aktiveer dit die elektromagneet, wat daartoe lei dat die ysteranker na die elektromagneet aangetrek word. Geheg aan die anker is n hamer wat die

2.7Plaas n houtskroef langs die geleier wat die stroom dra. Die rigting waarin die skroef gedraai word, is dieselfde rigting as die rigting van vloed, terwyl die rigting waarin die skroef deur die hout beweeg, die rigting van die stroom

Q3— Section header —

3.1.1

3.1.2

3.2Die totale weerstand sal toeneem en die totale stroom sal afneem. Die weerstand in die parallelle netwerk neem toe, gevolglik neem die totale weerstand toe en daarom neem die kring se stroom af. (2\

3.3(2\

3.4.10,1 0,2 0,4

3.4.2=0,1+0,2+0,4 Die totale kapasitansie neem af wanneer kapasitors in serie gekoppel word (1\

3.5

3.6

3.7

3.8.1Lynspanning verwys na die hoeveelheid spanning wat tussen enige twee lyngeleiers in n gebalanseerde driefasestelsel gemeet word.

3.8.230

Q4— Section header —

4.1Die krag wat deur spanning of stroom veroorsaak word, laat die wyser van deflekteertoestel van nul af beweeg. (2\

4.2sensitiwiteit Skaal nie eenvormig nie Kos meer as draaiysterinstrumente

4.3Verbind die toetsdrade met die sokke terminaal en die swart draad aan die COM aansluiter. Deaktiveer die kring heeltemal. Verwyder indien moontlik die komponent wat gemeet moet word uit die kring. Kies die hoogste omvang op die ohm

4.4.10, 0, =6

4.4.215

Q5— Section header —

5.1.1opwekker (1\

5.1.2Dit omskep meganiese energie in elektriese energie. (2\

5.2In n golfwikkeling word die twee punte van elke spoel met die kommutatorsegmente verbind wat tussen aanliggende pole van dieselfde polariteit geplaas word of die twee punte van elke spoel word in teenoorgestelde rigtings gebuig.

5.3.1n Raam is die buitenste omhulsel of bedekking van n masjien wat die binneste dele daarvan beskerm. (1\

5.3.2n Stator is die stilstaande deel van n masjien wat n magneetveld voortbring. (1\

5.3.3Die ankerkern bevat die ankergeleiers en draai in die magneetveld sodat die geleiers die magneetvloed sny. (2\

5.4.1

5.4.2Hysers Vervoerbande (2\

5.5n Selfopwekgenerator is n opwekker waar die veldopwekking deur die anker voorsien word. (2\

5.7(3\ [20] TOTAAL:20

Mark Allocation

Sections15 + 20 + 30 + 15 + 20 = 100 marks

Paper information

TitleMemo

SubjectElektriese Beginsels En Praktyk

LevelNCV Level 3

Document typeMemorandum

Year2020

MonthFebruarie

Pages7

Downloads7

Examination context

Decade2020s

Years ago6y

Season—

Start day—

Exam period—

Days since exam—

About Elektriese Beginsels En Praktyk 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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