《模拟电子技术1098》18春在线作业2-0001

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A:1.5KΩ
B:1.2KΩ
C:2KΩ
D:2.5KΩ

<img height=”255″ width=”576″ alt=”” src=”http://file.open.com.cn/ItemDB/12537/ed3e10d3-bfe8-44bb-a3b5-1725b644a8e4/200811121475291.GIF” />A
A:A
B:B
C:C
D:D

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A:<IMG SRC=”http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/jiaoxuecd/20070515/ea722ae9.JPG”></IMG>
B:<IMG SRC=”http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/jiaoxuecd/20070515/e63d6cbc.JPG”></IMG>
C:<IMG SRC=”http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/jiaoxuecd/20070515/645d1447.JPG”></IMG>
D:<IMG SRC=”http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/jiaoxuecd/20070515/b5d2bfe9.JPG”></IMG>

<img height=”227″ width=”576″ alt=”” src=”http://file.open.com.cn/ItemDB/12537/10d4f190-7158-4a8e-81e7-6912c7d12b39/2008111214339285.GIF” />a
A:A
B:B
C:C
D:D

<img height=”105″ width=”576″ alt=”” src=”http://file.open.com.cn/ItemDB/12537/741ae074-858b-48b3-8337-8f3c596df95a/200811121426166.GIF” />A
A:A
B:B
C:C
D:D

<img height=”167″ width=”576″ alt=”” src=”http://file.open.com.cn/ItemDB/12537/28bdb0eb-e68b-47c4-a5f4-5a0c6db72df3/2008111214458920.GIF” />A
A:A
B:B
C:C
D:D

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A:微分运算电路
B:积分运算电路
C:对数运算电路
D:比例运算电路

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A:<IMG SRC=”http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/jiaoxuecd/20070515/726e77ac.JPG”></IMG>
B:<IMG SRC=”http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/jiaoxuecd/20070515/efad6d99.JPG”></IMG>
C:<IMG SRC=”http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/jiaoxuecd/20070515/5d37492c.JPG”></IMG>
D:<IMG SRC=”http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/jiaoxuecd/20070515/4a4c6ac9.JPG”></IMG>

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A:D1导通，D2导通
B:D1导通，D2截止
C:D1截止，D2导通
D:D1截止，D2截止

在信号的运算中，往往把运算放大器视为理想的放大器，在运算过程中，利用其两个重要的特性，它们是（   ）
A:抑制共模信号
B:放大差模信号
C:虚短
D:虚断

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A:m与j连接
B:k与n 连接
C:k与j连接
D:m与n连接

对于共集电极放大电路的特点，正确的结论是（  ）
A:输入电阻高
B:输出电阻小
C:电压放大倍数小于1，且接近等于1
D:电流放大倍数小于1

<img height=”132″ width=”576″ alt=”” src=”http://file.open.com.cn/ItemDB/12537/70fcf996-d0b0-43fb-a534-779db84b63c2/20081112143611471.GIF” />A
A:A
B:B
C:C
D:D

直流稳压电源包括下列哪些电路（    ）
A:起振电路
B:选频网络
C:稳压电路
D:滤波电路

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A:稳定输出电压
B:稳定输出电流
C:减小输出电阻
D:增大输入电阻

<span style=”FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-bidi-font-family: ‘Times New Roman’; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA”>反相比例运算电路引入的是负反馈，同相比例运算电路引入的是正反馈。</span>
A:错误
B:正确

<span style=”FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: ‘Times New Roman’; mso-hansi-font-family: ‘Times New Roman’; mso-bidi-font-family: ‘Times New Roman’; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA”>两个单极放大电路空载的放大倍数均为&mdash;</span><span lang=”EN-US” style=”FONT-SIZE: 10.5pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体”>50</span><span style=”FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: ‘Times New Roman’; mso-hansi-font-family: ‘Times New Roman’; mso-bidi-font-family: ‘Times New Roman’; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA”>，将他们构成两级阻容耦合放大器后，总的放大倍数为</span><span lang=”EN-US” style=”FONT-SIZE: 10.5pt; FONT-FAMILY: &quot;Times New Roman&quot;; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体”>2500</span><span style=”FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: ‘Times New Roman’; mso-hansi-font-family: ‘Times New Roman’; mso-bidi-font-family: ‘Times New Roman’; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA”>。</span><span lang=”EN-US” style=”FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-bidi-font-family: ‘Times New Roman’; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA”><span style=”mso-spacerun: yes”>&nbsp; </span></span>
A:错误
B:正确

串联反馈可以提高输入电阻，并联反馈可以减小输入电阻。
A:错误
B:正确

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A:错误
B:正确

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A:错误
B:正确

共射极放大电路既有电压放大作用，又有电流放大作用。
A:错误
B:正确

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A:错误
B:正确

<span style=”FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-bidi-font-family: ‘Times New Roman’; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA”>集成运放的<span lang=”EN-US”>K_CMR</span>越大，集成运放对温漂的抑制作用越好。</span>
A:错误
B:正确

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A:错误
B:正确

电压放大器无功率放大作用。
A:错误
B:正确