模块六检测题(答案)
《学前儿童社会教育》模块六练习(含答案)

《学前儿童社会教育》模块六作业(含答案)单选题1(5分)、5()是影响儿童依恋安全性的重要外因。
•A、气质类型•B、抚养质量•C、性格•D、同情心参考答案: B展开解析2(5分)、5对于幼儿来说,()就是让幼儿感受到自己是集体或幼儿园中的重要一员,被老师和同伴接受,被他们认为是有价值的,与他人成为整体的一种情感,幼儿愿意承担作为集体一员的各项责任和义务,乐于参与集体活动。
•A、归属感•B、安慰能力•C、合作能力•D、同理技巧参考答案: A展开解析3(5分)、5归属感教育中,小班幼儿着重()培养。
•A、国家归属感•B、幼儿园归属感•C、家庭归属感•D、民族归属感参考答案: C展开解析4(5分)、5儿童的依恋产生和发展过程分成了()个阶段.•A、三个•B、四个•C、五个•D、两个参考答案: B展开解析5(5分)、5归属感教育中,中班幼儿着重()培养。
•A、家庭归属感•B、国家归属感•C、民族归属感•D、幼儿园归属感参考答案: D展开解析6(5分)、5()依恋的儿童经常表现出母亲在不在身边无所谓,在母亲离开时没有紧张或焦虑不安,当母亲回来时也不予理会,或者只是短暂接近以下很快又走开,表现出忽视及躲避行为。
•A、焦虑-回避型•B、安全型•C、焦虑-矛盾型•D、安全-回避型参考答案: A展开解析7(5分)、5()依恋的儿童对母亲依赖性强,与母亲在一起时能舒心的玩玩具和做游戏,并不总是依附母亲,在母亲离去的时候,他们会明显表现出苦恼,当母亲回来时,他们会立即寻求与母亲的接触,并很快安静下来继续做游戏。
•A、焦虑-回避型•B、安全型•C、焦虑-矛盾型•D、安全-回避型参考答案: B展开解析8(5分)、5()是指幼儿对于自己所在的幼儿园、班级和小组的认可与接纳的感觉。
•A、家庭归属感•B、幼儿园归属感•C、民族归属感•D、国家归属感参考答案: B展开解析9(5分)、5()是一种有效的情绪分享谈话策略,它能够帮助幼儿开放、诚实的表达自己的情绪。
外研版六年级英语下册模块六测试题及答案

满分:100分时间:60分钟得分:听力部分(40分)一、听录音,选出你所听到的单词。
(10 分)( )1.A.a baseball B.a basketball C.a basket( )2.A.best B.bought C.brought( )3.A.peace B.space C.paper( )4.A.sent B.thank C.send( )5.A.flower B.famous C.family二、听录音,判断句意与图片是否相符,相符打“ ”不相符打“✕”。
(10分)1.( )2.( )3.( )4.( )5.( )三、听录音,选出合适的答语。
(10分)( )1.A.A spaceship. B.A plane. C.A train.( )2.A.No, I can. B.Yes, I can. C.Yes, I can t.( )3.A.In 2003. B.Space. C.In spaceship.( )4.A.Birthday presents. B.My friends. C.Daming s.( )5.A.China. B.Russia. C.Japan.四、听音,排序。
把下面的句子按录音顺序排起来。
(10分)( )They saw their favourite team.( )Simon ate a hot dog and drank cola.( )Daming and Simon went to a volleyball game in China by bikes.( )Their team played very well.( )They were watching TV last night.笔试部分五、按要求写出下列单词的相应形式。
(10分)1.stop(现在分词)2.buy(过去式)e(过去式)4.I(形容词性物主代词)5.interest(形容词)六、用括号内所给词的适当形式填空。
【优质】六年级上册英语模块测试卷-Module 6 外研三起(word,含答案)

Module 6达标测试卷三一、听录音,选出你所听到的单词。
(5分)()1. A. knife B. nine C. nice()2. A. of B. for C. often()3. A. difficult B. different C. did()4. A. work B. word C. world()5. A. English B. Japanese C. French二、听录音,把人名和相应的图片连起来。
(10分)1. Mary2. Laura3. Tom4. Sam5. AmyA B C D E三、听录音,推断下列句子与你所听到的内容是(T)否(F)相同。
(5分)()1. We've got a letter from New York, but it's not from Daming.()2. We are from Beijing in China, so we are all Chinese.()3. Please write to me and we can be pen friends.()4. Amy says she will write to him soon.()5. Have you got a knife and fork?四、听短文,给下列句子排序。
(10分)()My cousin wants to visit China.()I haven't got a brother or sister.()My cousin has got a book about China.()My parents love me very much.()My cousin is in America.笔试部分(70分)五、选出每组单词中不同类的一项,将其填入题前括号内。
(5分) ()1. A. knife B. send C. fork ()2. A. fly B. read C. beautiful ()3. A. kite B. flag C. about ()4. A. age B. and C. but()5. A. bicycle B. stamp C. difficult 六、单项选择。
外研版三起英语六上第六模块测试题及答案试题

外研版(三起)六年级英语上册Module6, unit1 .2测试题一、写出下列词组(16)1.一封来自美国的信2. 中国食物3.和……一路玩4.刀和叉5.someday6.American7.park8.London9.difficult 10.send 11.kite 12.write二、写出下列单词的相应形式:(8)1.meet(过去式)2.difficult(反义词)3.sandwich (复数)4.photo(复数)5.finish (单三)6.have not (缩写)7.has not(缩写)8.knife(复数)三、选择填空:(15)( )1. I play a toy. A.to B.with C.about( )2. I’ve got a letter China. A.to B.about.C.from( )3. It’s a letter Chinese food. A.from B. about. C.to( )4. The question is very difficult me. A. for B.to C. about( )5. I have got some photos Canada. A. of B.about C.from( )6.Our school starts half past four. A.at B.in C. on( )7.Our school at half past four. A.finishes B.finishs C. finished( )8.Lingling got a pet dog. A.has B.have C.had( )9. I like . A.swim B.swimming C.swiming( )10.Have you got a schoolbag?A. Yes,I have.B. No, I have.C.Yes , I haven’t.( )11.Please write me and we can be good friends. A. to B.from C.for( )12.Mom, Mary. A.this is B.he is C.she is( )13.Have you got a book about China a book about America? A.or B.and C.but( )14.I`ve got a violin, I can`t play it. A.and B.but C.so( )15.Jim has got a cat he often play with it. A.butB.andC.so四、按照句子的意思连线。
2022-2023学年外研版(三起)英语四年级下册Module6测试卷含答案

第六模块同步检测题时间:60分钟总分:100分听力部分(30分)一、听录音,选出你所听到的单词。
(10分)()1.A.were B.where C.was ()2.A.then B.than C.ten ()3.A.big B.bag C.fat ()4.A.out B.our C.not ()5.A.sun B.son C.man 二、听录音,选出你所听到的句子。
(10分)()1.A.They’re having a music lesson.B.We’re having a music lesson.()2.A.Was it windy yesterday?B.It was sunny yesterday.()3.A.Who are you?B.How are you?()4.A.Hukou was a big city then.B.Haikou was a big city then.()5.A.Was he a bit shy then?B.Was she a bit shy then?三、听录音,给下列图片排序。
(10分)笔试部分(70分)四、找出每组单词中不同类的一项。
(10分)()1.A.sun B.windy C.sunny ()2.A.zoo B.lesson C.school ()3.A.yesterday B.Monday C.Sunday ()4.A.well B.fine C.thanks ()5.A.village B.small C.big 五、将短语与对应的图片连线。
(10分)1.at school2.at the zoo3.at home4.a small village5.a big city六、选择正确的答案。
(10分)()1.________ was Sunday.A.Tomorrow B.Today C.Yesterday()2.I will have a Chinese ________ tomorrow.A.school B.lesson C.city()3.The old trees________ short then. Now they ________ tall.A.are;are B.were;are C.are;were()4.—How are you,Grandpa?—Fine,________.A.thank B.thanks C.thanks you ()5.—Were you at home yesterday?—________A.No,I wasn’t.B.Yes,I am. C.I’m in a cinema.七、从方框中选择正确的单词填空。
外研版五(上)英语第六模块测试题附答案

外研版五(上)英语第六模块测试题附答案一,找出下列画线部分读音不同的单词(10分)( )1,A,school B,cheese C, chair D,china( )2,A,his B, home C, hour D, hurry( )3,A,team B, teacher C, really D, clean( )4,A,line B, help C, better D, well( )5,A,can B, fast C, badly D, back二,按要求写词(15分)1,use(形容词)____________________ 2,hear(同音词)_______________________3, see(过去式)___________________ 4,these(单数)________________________5, they(形容词性物主代词)________ 6,can(否定形式)______________________7, people(复数)__________________ 8,firemen(单数)______________________9,have(单三形式)________________ 10, here’s(完全形式)__________________三,单项选择题(10分)( )1,You are very good_____basketball ____ China. A, to on B, at in C,in in ( )2,Do you want ____ be ____ our football team? A, to on B,at in C,to in ( )3,How_____do you play football? I can’t play it at all. A,good B,well C,badly ( )4,But you jump____high. A,badly B,real C,really ( )5,She is a_____ girl,she can do it _____A, good well B, well good C,well well( )6,____ you run fast?--No,I ____.A, Can don’t B, Do do C, Can can’t( )7,Let’s go and play _____basketball. A,a B,the C,/( )8,_____ grandma is slow now,_____ healthy.A,Linda and B,Linda’s but C,Lindas so( )9,Can you pass the ball well?-____A,Thank you B, Yes, I am C,Not very well( )10,And you can catch the ball well,_____ you can ____a good goalkeeper.A,So be B,but be C,And are四,情景选择题(10分)( )1,你想知道对方传球好不好,你会这样问_______A, Can you catch the ball very well? B,Can you pass the ball very well?( )2,你想知道对方什么做得最好_______A, What can you do best of all? B,What can you do well?( )3,你告诉朋友你擅长唱歌和跳舞,你这样说_______A,I can sing and dance B,I’m good at singing and dancing.( )4,你问别人钢琴弹得多好,你应该这样问_________A,How well do you play the piano? B,How good can you play the piano well? ( ) 5,Tom根本不会踢足球,他会这样说___________A,I can’t play football at all. B,I can’t play basketball well.五,判断下列句子与图片是(T)否( F )相符(10分)( )1, I can’t run fast.( )2,I want to be in your football team.( )3,I can play basketball well.( )4,Liming is a fantastic goalkeeper.( )5,I’m good at playing volleyball(排球)六,选择合适的句子补全对话(10分)Jim:Hello,Daming!1____________Daming: I am fine,thanks.2__________Jim:I am going to play football.Daming:5___________Jim:Yes,I am the captain of the school team.4__________Daming:Yes,I am a good goalkeeper.Jim:Great.5___________A,How are you? B,Can you play it too?C, Do you want to be in our team?D,Can you play football well? E,What are you going to do?七,按要求完成下列各小题(16分)1,at,were,basketball,very,good,you(.)(连词成句)_________________________________________________________ 2,good,can, you,a ,goalkeeper(.)(连词成句)_________________________________________________________ 3,Maomao can jump high(.)(否定句)_________________________________________________________ 4,I want some rice(.)(一般疑问句)_________________________________________________________ 5,Mum is cooking vegetables(对画线部分提问)_________________________________________________________ 6,She can play football.(对画线部分提问)__________________________________________________________7,In the past he jumped high and swam very fast.(英译汉)__________________________________________________________8,Lingling,do you want to be in our football team?(英译汉)__________________________________________________________八,阅读理解,阅读短文,判断正(T)误( F ) (10分)Football is a popular sports game.Lots of people like it.There are eleven players in each team.Only the goalkeeper can catch the ball with his hand.Many boys like playing football,and many girls like watching it.I like watching football matches,I often watch football matches at the weekend.( )1,There are ten players in a football team.( )2,I like watching football matches.( )3,I often watch football matches on Monday.( )4,Every player can catch the football with his hand.( )5,There are a lot of people who like football.九,写作园地(9分)根据提示,写一篇短文,介绍你的好友Tom的情况,50个词左右汤姆十一岁,学生,擅长打篮球,他是学校球队的一员,也喜欢唱歌.周末经常跟朋友打篮球。
外研社英语八年级上学期第六模块检测题及答案

八年级上学期英语模块检测〔六〕Module6一、单项选择〔共10小题;每题1分,总分值10分〕()1.Eachpanda lotsofbambooeveryday.A.needeatB.needeatingC.needtoeatD.needstoeat()2.Todaymanywildanimalsare danger.A.atB.inC.ofD.with()3.Ihaveonlyafewdollars___________.A.leaveB.leftC.leavingD.toleave()4.Thenewswasso__________thatwewereall______________..A.excite,excitedB.exciting,excitedC.excited,excitingD.excited,excite()5.It'simportantforus Englishwell.A.learnB.learnedC.tolearnD.learning()6.Hisbossmadehim_________morethantenhoursaday.A.workB.toworkC.workingD.toworking()7.Hisparentsdon’tallowhim___________outafter9pm.A.goesB.goC.togoD.going()8.Inorderto_______ustoseethetigersfromAustralia,mymother didn’tgotowork today.A.tookB.takingC.takeD.takes()9.---SomethingterriblehappenedtoTony.---Let’s__________whatwecandotohelphim.A.findB.findoutC.produceD.lookat ()10.I'msurprised that.A.hearB.tohearC.hearingD.hears二、完形填空〔共10小题;每题1分,总分值10分〕〕Hey,I’mSimon.Ihaveastrongandfaithfuldog,Bruce.Thedoglikes16withme.Sometimeshealsofollowsmyfathertowork.Onemorningwhenmyfatherworkedinthefield,he17hiscoatandputit underabig tree.Heturnedto thedogandsaid,“18mycoat,Bruce!〞ter,myfatherrememberedhehadtobuysomefood.19he hurried to theshop.20shopping,hewenthomedirectlyandforgotcompletelyabouthis21andthedog.Intheevening,Ilookedformydog22inthehouse,butI23findhim.Atthistime,myfathersuddenlyrememberedhiscoatandthedog.Hewentbacktothetree24.HefoundthatBrucewas25sittingonthecoat!()11.A.playing B.dealing C.agreeing ughing()12.A.tookout B.tookoff C.tookaway D.lookedafter()13.A.Watch B.Hear C.See D.Listen()14.A.But B.So C.Because D.Although()15.A.Since B.Before C.After D.Until(16.A.shop B.foodC.coat D.toy()17.A.somewhereB.everywhereC.nowhere D.anywhere(18.A.could B.couldn’t C.don’t D.doesn’t()19.A.atonce B.afterall C.asusual D.otherthan()20.A.yet B.even C.still D.Already三、阅读理解〔共 13小题;每题2分,总分值26分〕ADoyouknowthat animalshavelovefor eachotherandtheir children justlike ushumans?Letmetell yousomemovingstories ofgreat animalparents. Severalyearsago aheavyrain hit atownandmadethe rivergoup. Whentherainstopped,peoplefoundthatadogswamtoanislandintherivertwiceadayfortwoweeks.Whydidshedoso?Herfourchildrenwerethere.Themotherswamthereeverydaytofeedherbabies.Thistruestorymovedmanypeople.Anotherstoryisaboutchimpanzees(猩猩).AscientistnamedJaneGoodallspent4years living with chimpanzeesinAfrica.Shefoundthat chimpanzeesalso caredfor those that werehurtor gotlost.“It is not only humanswhohaveduties,animalsalsodo,〞shesaid.TwobirdsinChengdualsoshowedtheir parental(父母的)love.Theirbabywashurt andfell onthe street inthe centerofthe city.Carsweredriving pastbutthebraveparentsrusheddowntotheroadandtookthelittlebirdawaywiththeirclaws(爪子).()21Aftertheheavyrain,themotherdogswamtotheisland________.A.tolookforfoodB.tofeedherbabiesC.tomovesomepeopleD.tocarrythingstoherowner()22.Thescientistfoundchimpanzees________.A.caredfor the hurt or lostonesB.often left for afar placeC.alwaysstayed inthe sameplaceD.didn’t careabouteachother()23.Thetwobirdsrusheddownandtookthelittleoneawaybecause________.A.theydidn’tliket heirbabyB.theywerenotkindenoughC.theywantedtoteachtheirbabyD.theywantedtosavetheirbaby()24.Fromthepassageweknow________.A.dogsliketoswimacrosstheriverinaheavyrain.B.motherbirdsdo n’twanttosavetheirchildrenC.animalparentslovetheirchildrenalotD.allanimalswanttomovepeopleverymuch( )25 .Theword “moving〞inthefirstparagraphmeans___________A.移动的B. 搬动的C. 感动的D. 感人的BWeallknowthatTaiwanisconsideredasTreasureIsland 〔宝岛〕ofChina. Thescenerythereisverybeautiful. Recently wehavebeenconnectedcloselyeachother.Severalmonthsago,agroupof19Taiwanesechildren flewtoChengduinordertobeginatour tostudypandas.Themiddleschoolchildren werefromChiayiCounty in southwest Taiwanandwerechosenbecauseof their excellent performanceatschool.Duringthevisit, thechildren sawpandasupclose. Theywereveryexcited toseesomanypandasatthesametime.Thechildrenalsotraveledtothe–MountE’meiscenicareaandmetlocalschoolchildren.Atalso,theysaid, “Thepandasareverycute,andtheyareallhappy. TheyalsosaidthechildreninChengduareveryfriendlytothem,andtheyalllikethere.ThehopetovisitSichuanagain.( )26.Taiwanisconsideredasa island.A.valuableB.richC.beautifulD.allabove( )27.Whydidthegroupof19TaiwanesechildrencometoChengdu?A.Becausetheycametostudyhere.B.Becausetheyhadneverbeenhere.C.Becausetheyflewhereforatourtostudypandas.D.BecausetheywerefromChiayiCountyinsouthwestTaiwan.( )28.ThechildrenhadagoodchancetovisitChengdubecauseA.theywereinterestedinit〞B.theydidwellatschool((C.theywereperformingdifferentroles.D.theywerenotfromthesamecountry)29 Whentheyvisited pandas,thechildren werequite excitedA.toseesomanypandasatatime.B.toclimbtheMountE ’meiC.toseepandasD.tofindpandasverycute)30.ThispassagemainlyexpressesthatA.themiddleschoolstudentsinTaiwanmustcanlearnaboutpandas.B.thereisagoodrelationshipbetweenthetwoplaces.C.thechildreninChengduareveryfriendly.D.thestudentsinTaiwanareexcellent.CLotsofpeoplewereaskingmethesamequestion—Howdida22-year-old woman row〔划〕a19-footboatfor70days?Well,whenIwasontheseaalone,thebiggestdifficultywasthefeelingofbeinglonely.IstartedonJanuarythanhalfthepeoplewhotriedsailingaloneoften gaveupinthefirst twoweeks,soIdecidedtofinish one-fourthofthesailingfirst,whichtookabout20days.Day20th,January22came!IsaidtomyselfthatIshouldbehappy.ButIwasfeelingsobad.Itseemedtobethehardestdayforme.Ididn ’tseelandfor overtwoweeks.EverydayIdidthesame—rowing, eating, sleeping,watchingtheskyandtheocean...SuddenlyIsawsomethingbreakingthroughthewaternearmyboat. Theyweredolphins.Theycircledmyboatandwerecloseenoughformetotouch.SoIdid! SuddenlyIfelt somoved,theycametosay“Hello〞,just whenIneededitmost.Iwasnolongerlonely,believingthatIwouldsucceed.AndImadeit! All2,817milesIgottothecoastonMarch14,after 70days andfivehoursatsea.Sothesecretofmysuccessisthemomentwiththosedolphins.( partwasmostdifficultforthosepeoplewhotriedsailing alone?A.Thefirstday.B.Thelastday.C.Thefirsttwoweeks.D.Themiddleofthetrip.( )32 Theunderlinedword“dolphin〞inthefourthparagraphmeans “akindof 〞_______.A.friendlyanimalB.dangerousfishC.specialplantD.beautifulbird( )33Whatisthebesttitleofthepassage?A.Woman,AsGoodAsManontheSeaB. AnInter esting TaskontheSeaC.ProtectingWildAnimalsD.Dolphins,theSecretofMySuccess四、根据汉语提示,写出单词的正确形式。
2022年外研版(三起)英语三年级上册Module6模块测试卷含答案

外研版(三起)三年级英语上册单元测试卷Module6题号一二三四五六七八九十总分1.()A.happy B.fine C.hello2.()A.Tim B.Jim C.here3.()A.pen B.pencil C.present4.()A.your B.you C.my5.()A.nine B.how C.what二、单选题。
(共10分)6.A: How old are you? ()B: ___________A.I'm Chen Jie.B.I'm nine years old.C.I'm fine, thank you. 7.I ______ nine. You ______ six. ()A.am; is B.is; are C.am; are8.—_____ are you, Lingling? ()—I’m eight.A.How B.How old C.How many9.Here ________ your cake. ()A.an B.a C.is10.You ________ six. ()A.am B.are C.to三、情景选择。
(共10分)11.你想问对方的年龄有多大时,应说:()A.How old are you?B.How are you?C.How many?12.当我们不知道对方多大的时候,我们可以这样问:()A.How are you?B.How old are you?13.你告诉别人你的弟弟5岁了,你说:()A.My brother is five.B.She is five.C.I'm five.14.当你想知道朋友的年龄时,你应该怎样问?()A.How old are you?B.How are you?15.你想知道小刚的年龄,你问他:__________ ()A.How are you?B.What’s your name?C.How old are you?四、读句子,选择合适的单词或词组将句子补充完整。
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模块六检测题答案
一、填空题
1.集成运算放大器主要由、、、四部分组成。
(输入级中间级输出级偏置电路)
2.若要集成运放工作在线性区,则必须在电路中引入反馈;若要集成运放工作在非线性区,则必须在电路中引入反馈或者在状态下。
(负正开环)
3.集成运放工作在线性区的特点是等于零和等于零;工作在非线性区的特点:一是输出电压只具有状态和净输入电流等于;在运算放大器电路中,集成运放工作在区,电压比较器工作在区。
(输入电流输出电阻两种零线性非线性)
4.理想集成运放的A u0=,r i=,r o=,K CMR =。
(∞∞ 0 ∞)
5.集成运放的非线性应用常见的有、和发生器。
(单门限比较器滞回比较器方波)
6.直流电源是由变压器、、、四部分组成。
(整流电路滤波电路稳压电路)
7.硅稳压管稳压电路利用二极管特性,其电流变化时,的特点,组成稳压电路。
模
块 六
集成运算放大电路及其他模拟集成电路的应用与测试
8.实用的串联型稳压电路包含 、 、 和 四部分。
(调整元件 比较放大电路 基准电压电路 采样电路) 二、判断题
( 对 )1.运算电路中一般均引入负反馈。
( 错 )2.在运算电路中,集成运放的反相输入端均为“虚地”。
( 对 )3.凡是运算电路都可利用“虚短”和“虚断”的概念求解运算关系。
( 对 )4.“虚短”就是两点并不真正短接,但具有相等的电位。
( 错 )5.“虚地”是指该点与“地”点相接后,具有“地”点的电位。
( 错 )6.集成运放在开环状态下,输入与输出之间存在线性关系。
( 对 )7.各种比较器的输出只有两种状态。
( 对 )8.一般情况下,在电压比较器中,集成运放不是工作在开环状态,就是仅仅引入了正反馈。
( 对 )9.在输入电压从足够低逐渐增大到足够高的过程中,单限比较器和滞回比较器的输出电压均只跃变一次。
( 对 )10.整流电路可将正弦电压变为脉动的直流电压。
( 对 )11.电容滤波电路适用于小负载电流,而电感滤波电路适用于大负载电流。
( 错 )12.在单相桥式整流电容滤波电路中,若有一只整流管断开,输出电压平均值变为原来的一半。
三、选择题
1.集成运放电路采用直接耦合方式是因为( C )。
A .可获得很大的放大倍数
B .可使温漂小
C .集成工艺难于制造大容量电容
模
块 六
集成运算放大电路及其他模拟集成电路的应用与测试
2.集成运放的输入级采用差分放大电路是因为可以( A )。
A .减小温漂
B .增大放大倍数
C .提高输入电阻
3.为增大电压放大倍数,集成运放的中间级多采用( A )。
A .共射放大电路
B .共集放大电路
C .共基放大电路 4.由运放组成的电路中,工作在非线性状态的电路是( G )。
A .反相放大器
B .差分放大器
C .电压比较器
5.欲实现A u =-100的放大电路,应选用( A )。
A .反相比例运算电路
B .同相比例运算电路
C .积分运算电路
D .加法运算电路
6.题(三)6图所示运放应用电路中,若U i =1V ,则输出电压U o 为( C )。
A .1V
B .–1V
C .2V
7.要实现U o =-5U 3-10U 2-U 1
运算,则选用( C )。
A .反相比例运算电路
B .同相比例运算电路
C .反相加法运
算电路
8.开环工作的理想运算放大器的同相输入时的电压传输特性为如题(三)8图所示中的( A )。
题(三)6图 题(三)8图
9.题(三)9图所示电路中,其电压放大倍数等于( A )。
A .1
B .2
C .0
10.题(三)10图所示电路中,输入电压为i u ,则输出电压o u 为( C )。
A .u i
B .2u i
C .0
模
块 六
集成运算放大电路及其他模拟集成电路的应用与测试
题(三)9图 题(三)10图 11.题(三)11图所示理想运放组成的运算电路的电压放大倍数为( C )。
A .-11
B .-10
C .11
12.题(三)12图所示电路中,输入电压t u ωsin 10i =mV ,则输出电压o u 为( B )。
A .正弦波
B .方波
C .三角波
题(三)11图 题(三)12图 13.直流稳压电源中滤波电路的目的是( C )。
A .将交流变为直流
B .将高频变为低频
C .将交、直流混合量中
的交流成分滤掉
14.串联型稳压电路中的放大环节所放大的对象是(C )。
A .基准电压
B .采样电压
C .基准电压
与采样电压之差
四、简答题
1.通用型集成运放一般由几部分电路组成,每一部分常采用哪种基本电路?通常对每一部分性能的要求分别是什么?
解:通用型集成运放由输入级、中间级、输出级和偏置电路等四
模
块 六
集成运算放大电路及其他模拟集成电路的应用与测试
个部分组成。
通常,输入级为差分放大电路,中间级为共射放大电路,输出级为互补电路,偏置电路为电流源电路。
对输入级的要求:输入电阻大,温漂小,放大倍数尽可能大。
对中间级的要求:放大倍数大,一切措施几乎都是为了增大放大倍数。
对输出级的要求:带负载能力强,最大不失真输出电压尽可能大。
对偏置电路的要求:提供的静态电流稳定。
2.何谓“虚地”?何谓“虚短”?在什么输入方式下才有“虚地”?若把“虚地”真正接“地”,集成运放能否正常工作?
答:电路中某点并未真正接“地”,但电位与“地”点相同,称为“虚地”;电路中两点电位相同,并没有真正用短接线相连,称为“虚短”,若把“虚地”真正接“地”,如反相比例运放,把反相端也接地时,就不会
有i i =i f 成立,反相比例运算电路也就无法正常工作。
3.题(四)3图所示电路中,请合理连线,构成5V 的直流电源。
题(四)3图
模块 六
集成运算放大电路及其他模拟集成电路的应用与测试
答:1接4,2接6,5接7、9,3接8、11、
13,10接12。
连接电路如图所示。
五、计算题
1.题(五)1图所示为应用集成运放组成的测量电阻的原理电路,试写出被测电阻R x 与电压表电压U o 的关系。
解:从电路图来看,此电路为一反相比例运算电路,因此:
2.题(五)2图所示电路中,已知R 1=2k Ω,
R f =5k Ω,R 2=2k Ω,
R 3=18k Ω, U i =1V ,求输出电压U o 。
解:此电路为同相输入电路。
题(五)1图 题(五)2图 3.题(五)3图所示电路中,已知电阻R =5R ,输入电压U =5mV ,求
模块 六 集成运算放大电
路及其他模拟集成电路的应用与测试
输出电压U o
解:U 01=U i =5mV=U i2,第二级运放是反向比例运算电路,所以:
4.电路如题(五)4图所示,其稳压管的稳定电压V 6Z2Z1==U U ,正向压降忽略不计,输入电压u i =5sin ωt V ,参考电压U R =1V ,试画出输出电压o u 的波形。
题(五)3图 题(五)4图
解:
t
5.试分析题(五)5图所示桥式整流电路中的二极管D 2或D 4断开时负
模块 六 集成运算放大电路及其他模拟集成电路的应用与测试
短路,后果又如何?
题(五)5图
解:当D
2或D 4断开后
电路为单相半波整流电路。
正半周时,D 1和D 3导通,负载中有电流过,负载电压u o =u ;负半周时,D 1和D 3截止,负载中无电流通过,负载两端无电压,u o =0。
如果D 2或D 4接反
则正半周时,二极管D 1、D 4或D 2、D 3导通,电流经D 1、D 4或D 2、D 3而造成电源短路,电流很大,因此变压器及D 1、D 4或D 2、D 3将被烧坏。
如果D 2或D 4因击穿烧坏而短路
则正半周时,情况与D 2或D 4接反类似,电源及D 1或D 3也将因电流过大而烧坏。