
電子學測驗
Quiz
•
Professional Development
•
12th Grade
•
Practice Problem
•
Medium
淳安 董
Used 2+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
關於 FET 與 BJT 電晶體的比較,下列何者有誤?
FET 的輸入阻抗較 BJT 高
FET 比 BJT 較適合應用於超大型積體電路中
FET 的熱穩定性較 BJT 好
FET 的增益與頻寬的乘積較 BJT 大
2.
MULTIPLE SELECT QUESTION
1 min • 1 pt
如圖所示為 FET 放大電路,假設 gm=2mA/V, rd=30kΩ,其電壓增益為何?
15
–15
30
–30
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
承上題,rd=30kΩ,其輸出阻抗為?
60kΩ
30kΩ
20kΩ
15kΩ
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
一 MOSFET 連接放大器,下列何者電路組成適用於高頻電路?
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
將兩個相同的單級低通放大器串接成一個兩級放大器,其頻率特性的變化較個別單級低通放大器有何不同?
兩級放大器之頻帶寬度不變
兩級放大器之頻帶寬變高
兩級放大器之頻帶寬變低
兩級放大器之低頻截止在頻率降低
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如圖所示電路,電晶體Qn之臨限電壓Vtn=0.5V,電晶體Qp之臨限電壓Vtp=−0.5V,當輸入電壓Vi=3時,輸出電壓Vo為
0V
0.5V
2.5V
3V
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如圖所示電路的邏輯函數(Y)為何?
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