034
De transformator heeft n1 = 20 windingen en n2 = 100 windingen.
De impedantie Z1 is:
a
24
Ω
b 120
Ω
c 3 K
Ω
d 15 K
Ω
038
n = np/ns
n = Up/Us
n = Is/Ip
n
2
= Zp/Zs
n
2
= Cs/Cp
┘
n
2
= Zp/Zs
n = 20/100 = 0.2 dus omhoog
Zp = n2 x Zs = 0.2
2
x 60 0 = 24 ohm