
2021-1
Authored by 졍이 졍이
Engineering
11th Grade

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60 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
RLC 직렬공진 회로에서 최소가 되는 것은?
저항
임피던스
전류
전압
Answer explanation
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
단위 길이당 권수 30회인 무한장 솔레노이드에 5[A]의 전류가 흐를 때 솔레노이드 내부의 자장[AT/m]은?
0
6
60
150
Answer explanation
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
동기 전동기의 전기자 반작용은 리액터 부하에 의한 ( ㄱ )과 콘덴서 부하에 의한 ( ㄴ )이 있다. ㄱ, ㄴ에 알맞은 것은?
ㄱ:증자작용, ㄴ:감자작용
ㄱ:감자작용, ㄴ:증자작용
ㄱ:교차자화작용, ㄴ:감자작용
ㄱ:증자작용, ㄴ:교차자화작용
Answer explanation
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
권수비 2, 1차 전압 100[V], 2차 전류 5[A], 2차 임피던스 20[Ω]인 변압기의 1차 환산 전압 및 1차 환산 임피던스는?
200[V], 80[Ω]
200[V], 40[Ω]
50[V], 10[Ω]
50[V], 5[Ω]
Answer explanation
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
한국전기설비규정에 의하여 비상 조명을 제외한 조명용 분기회로 및 정격 32[A] 이하의 콘센트용 분기회로에 시설하는 누전차단기는 정격감도전류가 몇 [mA] 이하이어야 하는가?
15
20
30
50
Answer explanation
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
그림과 같은 회로에서 CD에서 본 합성 저항은 몇 [Ω]인가?
r
2r
Answer explanation
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
SCR 2개를 역병렬로 접속한 그림과 같은 기호의 명칭은?
SCR
TRIAC
GTO
UJT
Answer explanation
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