3회 산기 채점 참고(다른싸이트에서 제공)

1. <4점> 제 특별3종 접지공사 10옴   2. <5점> 피뢰기 -외부 이상전압으로부터 기기보호 ,             피뢰침 - 낙뢰에 대한 손상 방지??                               몰라서 그냥 끄적여봤어요 ...   3. <5점> 30 kw 15kw 37.5kw 4. <5점> 550V 직류연결?? 틀렸어요 ...   5. <6점> 이도 장단점   - 이도의 대소는 지지물의 높이를 좌우한다. - 이도가 너무 크면 전선은 그만큼 좌우로 크게진동하여 다른 상의 전선에접 촉하거나 수목에 접촉하여 위험을 줄 수 있다. - 이도가 너무 크면 철도 , 도로 , 통신선 등의 횡단장소에는 이들과 접촉할 위험이 있다. - 이도가 너무 작으면 그와 반비례하여 전선의 장력이 증가하여 심할 경우 전 선이 단선 되기도한다.   6. <5점> 펌프 전동기 49.4kva   7. <6점> 8.2% 3.28% 122Kw   8. <5점> CT 차동 9.24A   9. <5점> T1(on)->차단기(off)->R1(off)->S1(off)   10. <3점> 전선관안에 전선관을또 넣고??뭐 그런문제 ...              '''절연 보호'''         라고 적었네요...   11. <8점> 16.71A 634.98M 4mm2               22.79   866.02   6               33.43  1270.34   6               13.64  518.32    2.5                2.62 99.56      2.5   간선 (30*89.19/14 ) / (2/3.8) 답이 잘 기억안나네요ㅜㅜ   12. <8점> MCCB              THR           SC            PB         LS              배선용 차단기 열동계전기 전력용 콘덴서 푸쉬버튼 리미트 스위치 과부하 동작 표시 램프 그래프 잘 그렸습니다.   13. <5점> PLC문제 인데 ... out 을 2개 만들어서 그렷어요...이래도 맞다고 되나요?? ----ll----ll--------l-----p010      00    01           | ----ll--ll--ll-------|       00 02 04 ---ll---ll--ll--------| ---P010     03 02 01             | ---ll----ll----------|     03   04   14. <12점> 수변전 - CNCV-W (수밀형) TR-CNCV-W(트리억제형) - MOF DM VARH CS Vo - 전력용 콘덴서 그리고 -부하의 역율 개선 - 델타와이 변압기 결선도 그렸습니다 - LBS 대신 LS - () () () 못적음요... - 재투입이 불가능하다   15. <4점> 발광효율??틀렸어요...   16. <5점> 콘덴서용량 틀렸음요...   17. <4점> 피뢰기 정격                              18 21 이 순서 로 적었어요.   18. <5점> 축전지용량 59.88AH <DIV class=autosourcing-stub> <A href="http://cafe.naver.com/power119.cafe?iframe_url=/CafeMemberNetworkView.nhn%3Fm=view%26memberid=aa920912" target=_blank></A> </DIV>    <TABLE class=clearTable> <TBODY> <TR> <TD> </TD></TR></TBODY></TABLE> <xSCRIPT type=text/javascript>//<![CDATA[ redefineLink(); 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