107國中自然3下_1-2

Quiz
•
Other
•
7th - 9th Grade
•
Hard

Yu Liu
Used 11+ times
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列有關直流電的敘述,何者為非?
簡記為DC
電流方向固定
家用電源為直流電的一種
乾電池為直流電的一種
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列有關交流電的敘述,何者為非?
簡記為AC
電流大小和方向會隨時間做規律的週期性變化
乾電池為交流電的一種
若電力公司所提供的交流電頻率為60赫,表示電流方向每秒鐘來回變化60次
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列有關電器標示的敘述,何者正確?
雙孔插座的電壓為220伏特
三孔插座的電壓為110伏特
若電鍋規格標示為110 V、430 W,表示此電鍋可用於直流電源
合格的電器須標示其規格
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
家庭電器在電線與插頭的相接處,以及電線與電器的相接處,常因彎曲或受到不當的拉扯使得銅線斷裂,而形成何種現象?
短路
通路
斷路
電路
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
關於家庭用電安全的敘述,下列何者為非?
有接地線的電器,必須確實接地
電線插頭若損壞,只要無觸電之虞即不需更換
電線不可靠近水或會發熱的裝置
身體潮溼時不可觸摸電器
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
臺灣地區由電力公司所提供的交流電頻率為何?
33赫
45赫
50赫
60赫
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
電力公司將電力由發電廠輸送至用戶的過程中,為減少能量損耗,常採用何種方式輸送電力?
高電壓、高電流
高電壓、低電流
低電壓、高電流
低電壓、低電流
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