Zad. 1.

W układzie trójfazowym symetrycznym załączono woltomierz, amperomierz, watomierz. Przyrządy wskazały: 200 [V], 5 [A], 925 [W]. Jaka jest moc czynna odbiornika, obliczyć Zf. Wykonać odpowiednie rysunki i komentarze.

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Zad. 2.

Znaleźć wskazania wszystkich przyrządów jeśli wiadomo, że moc czynna całego układu

P = 360 [W]. Dane R = 30 [Ω], XC = 52 [Ω], XL = 17,33 [Ω].

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Zad. 3.

Do symetrycznej sieci trójfazowej włączono dwa watomierze. Wskazania watomierzy odpowiednio wynoszą 600 W i 200 W. Oblicz cos φ odbiornika.

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W1

XL

XL

XL

A

V1

V

Δ

sym

Δ

sym

A

Δ

sym

W

W1

Δ

sym

W2

V1

W2

XC

XC

XC

R

R

R