Elektrotegniek N5 — Document

November 2023 — N5 — Elektrotegniek

N5 2023 Nated Engineering

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1.1at word bedoel met nkerreaksie met betrekking tot GS masjiene (1\

1.2GS masjien 960 geleiers. Die borsels word met

1.2.1

1.2.2Die bykomende veldstroom benodig om hierdie ontmagnetisering te neutraliseer as die wikkeling 1 100 windings/pool het (2\

1.3DC shunt generator teen 300 V wanneer

1.4oem TWEE oorsake van vonking by die borsels op GS masjiene (2\

1.5GS motor 100 A teen 550 V. Die weerstand van die ankerkring

2.1Kring en kring word parallel 230

2.1.1Die stroomvloei (6\

2.1.2Die arbeidsfaktor (2\

2.1.3Die impedan sie (2\

2.1.4Die reaktansie (2\

2.1.5Die weerstand (1\ 8080085 Kopiereg voorbehou

2.2

2.3Noem DRIE metodes om arbeidsfaktor te verbeter (3\

2.4Noem TWEE kenmerke van parallel kringe wat teen resonansie is (2\ [20] VRAAG20

3.1Verduidelik die verskil tussen nuttige vloed en lekvloed (2\

3.215 kVA , 3,300/600 eenfasige transformator, wat teen geen las werk, het die volgende weerstande en lekreaktansies

3.3000 kVA , 33 kV 2% reaktansie van

3.4toevoerfrekwensie na die transformator gewysig word (2\ [20] VRAAG20

4.1Verduidelik die term verspreidingsfaktor (2\

4.250 Hz alternator 33 kV teen 000 r/min tydens oop kring voortbring. Neem die vloed per pool

4.3driefasige 50 Hz indu 4% teen volle las. Bereken die vollasspoed

4.4Die stator 50 Hz induksie motor is 88% eff ektief

4.4.1Die stator uitset

4.4.2Die meganiese drywing wat ontwikkel is

4.4.3

5.115 km eenfasige 19 mm en met spasies van 1 meter tussen die senters Aanvaar die resistiwiteit van koper as

5.2500 70 kW arbeidsfaktor van 0,85 90%. Bereken die lesing op elk van die twee wattmeters

Mark Allocation

Total100 marks

Sections20 + 20 + 20 + 20 = 80 marks

Paper information

TitleDocument

SubjectElektrotegniek

LevelN5

Document typeQuestion paper

Year2023

MonthNovember

Pages7

Downloads4

Examination context

Decade2020s

Years ago3y

SeasonSpring (SH)

Start dayWednesday

Exam periodNovember 2023

Days since exam1,073

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File size224 KB

Pages7

Archived on8 September 2026

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