Question

Трансформатор повышает напряжение с 200 В до 800 В. Определите количество витков в первичной катушке трансформатора, если вторичная катушка содержит 80 витков.

Answer 1

K=U1/U2=200/800=0,25
n1/n2=k
n1=n2*k=80*0,25=20

Answer 2

Calculation of the Number of Turns in the Primary Coil of a Transformer

To determine the number of turns in the primary coil of a transformer, we can use the formula for the turns ratio:

Turns ratio = (Number of turns in the primary coil) / (Number of turns in the secondary coil)

Given that the transformer increases the voltage from 200 V to 800 V and the secondary coil contains 80 turns, we can substitute these values into the formula:

Turns ratio = (Number of turns in the primary coil) / 80

Simplifying the equation, we have:

800 V / 200 V = (Number of turns in the primary coil) / 80

Solving for the number of turns in the primary coil, we get:

Number of turns in the primary coil = (800 V / 200 V) * 80

Calculating this expression, we find:

Number of turns in the primary coil = 320 turns

Therefore, the primary coil of the transformer contains 320 turns.