변압기

Problem 예제

Multiple Choice • Views 1033 • Comments 0 • Last Updated at 1 month ago

원리

변압기

3000/200[V]변압기의 1차 임피던스가 225[ $\Omega$ ]이면 2차 환산은 몇[ $\Omega$ ] 인가?

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1

2.8

2

1.0

3

1.5

4

2.1

Solution

$a = \dfrac{V_1}{V_2} = \dfrac{3000}{200} = 15$

$Z_2 = \dfrac{1}{a^2} Z_1 = \dfrac{1}{15^2} 225 = 1.0$

Correct answer: 2

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