The output

The output voltage of the transformer is 880 V. The secondary coil has 1200 turns. Transformation ratio k = 4. Find the voltage to which the primary coil is connected. How many turns does the primary coil have if a current of 1 A flows through it? What current flows through the secondary coil?

Correct answer:

U1 =  220 V
n1 =  300
I2 =  0.25 A

Step-by-step explanation:

U2=880 V n2=1200 I1=1 A k=4  k = U2/U1 U1=U2/k=880/4=220 V
k = n2/n1 n1=n2/k=1200/4=300
P=I1 U1=1 220=220 W P = I2 U2  I2=P/U2=220/880=0.25 A

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