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電子學測驗

Authored by 淳安 董

Professional Development

12th Grade

Used 2+ times

電子學測驗
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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

Media Image

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

Media Image

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?

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Media Image
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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

Media Image

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

0V

0.5V

2.5V

3V

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

如圖所示電路的邏輯函數(Y)為何?

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