Elektrotegniek N6 — Document

November 2022 — N6 — Elektrotegniek

N6 2022 Nated Engineering

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🎯 100 marks ⏱️ 3h 📄 5 pages 📝 33 items found

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Q1— Section header —

1.1Noem TWEE voordele van Swinburne se toets. (2\

1.2'n 250 V , 14,92 kW GS omtakmotor het konstante yster en wrywingsverliese

Q2— Section header —

2.1Noem die TWEE soorte sinusvormige golwe wat, as dit saam gesommeer word, 'n komplekse golf uitmaak. (2\

2.2'n Spanning word Veronderstel dat = 314 rad/s en bepaal:

2.2.1'n Uitdrukking vir die oombliklike waarde van stroom (8\

2.2.2Die arbeidsfaktor van die kring (5\ [15]15

Q3— Section header —

3.1

3.2Die persentasie impedansie van 'n 50 kVA , 1 000/240 V eenfasetransformator is (2+j6\ Bereken vir 'n arbeidsfaktor van 09, naloop:

3.2.1

3.2.2Die vollaskoperverliese. (2\

3.2.3

3.2.4Die ysterverlies as die transformator 'n maksimumrendement van 93% produseer teen 88% van volle las. (3\ [14] 808009614

Q4— Section header —

4.1Noem DRIE faktore waaraan voldoen moet word voordat twee alternators parallel gekoppel kan word. (3\

4.2Twee eenderse driefasige, sterverbinde alternators werk parallel om 'n gemeenskaplike las te lewer. Elke masjien het 'n sinchrone impedansie van 0,65 + j3,8 ohm per fase. Die masjiene word opgewek om oopkringspannings van onderskeidelik 2,2 kV en

4.2.1Bereken die volgende: (a\ (b\ Die stroom wat tussen die twee masjiene sirkuleer Die aansluiterspanning van die masjiene (5\ (3\

4.2.2(2\ [13]13

Q5— Section header —

5.1Gegenereerde EMK (7\

5.2Die lashoek in elektriese en meganiese grade (3\ [10]10

Q6— Section header —

6.1Die persentasie glyding waarteen die motor werk (2\

6.2Die rotorkoperverlies (2\

6.3Die arbeidsingang na die motor as die totale verliese in die stator 800 watt beloop (2\

6.4Die stroom wat van die toevoer af getrek word (2\

6.5Die rendement van die motor (3\ [11] 808009611

Q7— Section header —

7.1Noem DRIE soorte arbeid stempo wat met 'n WS kring geassosieer word. (3\

7.2'n Bogrondse transmissielyn lewer 'n driefaselas van 30 MW teen 132 kV, 50 Hz en 'n arbeidsfaktor van 0,8 naloop. 20 ohm, 65 ohm, van 1,6 mi rofarad.

7.2.2metode: (a\ (b\ (c\ Die sendkantspanning Die sendkantstroom Die sendkantarbeidsfaktor

Mark Allocation

Total100 marks

Sections15 + 15 + 14 + 13 + 10 + 11 + 22 = 100 marks

Paper information

TitleDocument

SubjectElektrotegniek

LevelN6

Document typeQuestion paper

Year2022

MonthNovember

Pages10

Downloads5

Examination context

Decade2020s

Years ago4y

SeasonSpring (SH)

Start dayTuesday

Exam periodNovember 2022

Days since exam1,440

About Elektrotegniek examination preparation

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