3/29電子學重修班_問答挑戰賽
Quiz
•
Science
•
9th Grade
•
Practice Problem
•
Easy

許 弼雄
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
關於直流電,下列何者正確?
含有正負極性的信號
只有單一極性的信號
正弦波屬於直流電
家庭插座供給直流電
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如圖,哪個是三角波?
第一個
第二個
第三個
第四個
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
請問下列式子為哪種波形的表示式?
Vmsin(wt+60o)
正弦波
方波
三角波
鋸齒波
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
請問紅色與藍色波形
哪個相位較為超前?
藍色
紅色
綠色
白色
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如圖,工作週期為?
80%
20%
100%
50%
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
波峰因數CF如何求出?
最大值/有效值
有效值/平均值
平均值/最大值
有效值/平均值
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
請問最大值,有效值,平均值
哪個數值最大?
最大值
有效值
平均值
直流值
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