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Summary Elektriese tegnologie

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Opsomming van graad 12 se elektriese tegnologie vanad hoofstuk 1 tot hoofstuk 6

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Hoofstuk 2: RLC
Reaktansie:
 Reaktansie is verhouding van spanning tot stroom in WS-kring wanner hulle 90° uit
fase is.
 Suiwer resistor bied weerstand teen vloei van stroom in stroombaan.
 Gemeet as verhouding van kring se spanning tot stroom wanner hulle in fase is.
 Wanner WS-toevoer aan suiwer inductor of suiwer kapasitor gekonnekteer word,
word weerstand teen vloei van stroom ondervind.
 Dit word reaktansie (X) genoem en in elke kring is wisselspanning en stroom 90° uit
fase.
 In ohm gemeet. (𝛺)
Induktiewe Reaktansie (XL):
 Is die weerstand wat die induktor teen vloei van wisselstroom bied.
 Formule: XL = 2𝝅fL ohms
 L = induktansie, gemeet in (H)-Henry
 f = frekwensie, gemeet in (Hz)- herts
Kapasitiewe Reaktansie (XC)
 Is die weerstand wat die kapasitort teen vloei van wisselstroom bied.
𝟏
 Formule: XC = ohms
𝟐𝝅𝒇𝑪
 C = Kapasitansie, gemeet in (F)-farad
 f = frekwensie, gemeet in (Hz)- herts
Impedansie (Z)
 Is die gekombineerde total van die weerstand R en reaktansies XL of XC in alle WS-
kringe
𝑽𝑻
 Formule: Z = 𝜴
𝑰𝑻
 XL > XC Z = √𝑅2 + (𝑋𝐿 − 𝑋𝐶 )2
 XC > XL Z = √𝑅2 + (𝑋𝐶 − 𝑋𝐿 )2
 XL = XC Z = R
Stroom in serie RLC:
 IT = IR = IL = IC

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Uploaded on
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