電氣基礎(chǔ)的知識點測試題答案

1、電氣基礎(chǔ)知識測試題姓名 成績一、單選題（每題3分，共60分）1、電壓也稱（C）。A電動勢B電位C同一電場兩點之間的電位差2、當n個阻值串聯(lián)時，其總阻值（A）。A變大B 變小C不變3、當n個阻值并聯(lián)時，其總阻值（C）。A變大B 變小C比最小的電阻還小4、變壓器的變比與（A）有關(guān)。A 一、二次側(cè)電壓 B 鐵芯構(gòu)成特性 C 電網(wǎng)頻率的高低5、三相三線制供電，主要是供給（C）0A照明B家用電器C 動力負荷&變壓器主要改變（B）oA頻率B電壓C功率7、萬用表的轉(zhuǎn)換開關(guān)是實現(xiàn)（A）oA各種測量種類及量程的開關(guān)B萬用表電流接通的開關(guān)C接通被測物的測量開關(guān)8、電力變壓器的油起（A）作用。A絕緣和滅弧B絕緣和防

2、銹 C絕緣和散熱9、兩只額定電壓相同的電阻，串聯(lián)接在電路中，則阻值較大的電阻（B）oA發(fā)熱量較小B發(fā)熱量較大C沒有明顯差別10、直接將電能送到用戶的網(wǎng)絡(luò)稱為（C）oA發(fā)電網(wǎng)B輸電網(wǎng)C配電網(wǎng)11、裝設(shè)接地線時，應(yīng)（B）A先裝中相B先裝接地端，再裝兩邊相C先裝導(dǎo)線端12、室外配電變壓器應(yīng)在變壓器（B）裝設(shè)避雷器。A低壓側(cè)B高壓側(cè)C中性點13、繼電保護裝置是由（A）組成的。A各種繼電器B二次回路各元件C包括各種繼電器和儀表回路14、多臺電動機均有一臺變壓器供電時，當電動機投入運行時，應(yīng)按容量（B）分別進行啟動。A別進行啟動。A由小到大由大到小 C按操作方便15、為防止感應(yīng)過電壓，母線或輸電線路應(yīng)（C

3、 ）避雷針。A多裝B靠近C遠離16、高壓斷路器具有開斷正常負荷和（C）的能力。A過載B短路故障C過載、短路故障17、電容器中儲存的能量是（A）。A電場能B磁場能C熱能18、交流電流表或交流電壓表指示的數(shù)值是（A）A有效值B平均值C最大值19、但凡電氣設(shè)備對地電壓在（B）及以上的叫高壓電氣設(shè)備。A大于380V B大于250V C大于220V20、電流流過人體，造成對人體內(nèi)部器官的傷害稱為（B）A電傷B電擊C電烙印二、填空題（每空2分，共40分）1、 我國規(guī)定的交流電力系統(tǒng)的額定頻率為。（ 50Hz）2、 總裝機容量是指系統(tǒng)中所有發(fā)電機額定有功功率的。（總和）3、 當某一電力線路發(fā)生接地時，距接地

4、點越近，跨步電壓。（越高）4、 電力系統(tǒng)按其作用不同可分為 和。（一次系統(tǒng)、二次系統(tǒng)）5、 電力系統(tǒng)主要包括、和。（發(fā)電廠、輸電網(wǎng)絡(luò)、配電網(wǎng)絡(luò)、用戶）&將電氣設(shè)備不帶電的金屬部分與接地裝置相接叫 接地。（保護）7、 電纜及電容器接地前應(yīng) 充分放電。（逐相）8、 在接線路時，先接零線，后接 。（火線）9、 由、和 三部分組成的電線稱為電纜。（芯線、絕緣層、保護層）10、 高壓斷路器：又稱，它不僅可以切斷或閉合高壓電路中的空載電 流和負荷電流，而且當系統(tǒng)發(fā)生故障時，通過繼電保護裝置的作用，切斷過負荷 電 流和短路電流。（高壓開關(guān)）11、是保護電力系統(tǒng)中電氣設(shè)備的絕緣免受沿線路傳來的雷電過電壓 損害

5、的一種保護設(shè)備。（避雷器）12、風(fēng)力發(fā)電廠將 通過風(fēng)力機轉(zhuǎn)化為 來驅(qū)動發(fā)電機發(fā)電。（風(fēng)能、機械能）知識贈送以下資料英語萬能作文（模板型）Along with the adva nee of the society more and more problems are brought to our atte nti on, one of which is that.隨著社會的不斷發(fā)展，出現(xiàn)了越來越多的問題，其中之一便是As to whether it is a blessing or a curse, however, people take differe ntattitudes.然而，對于此

6、類問題，人們持不同的看法。（Hold different attitudes持 不同的看；Come up with different attitudes有不同的看法）As society develops, people are attach ing much importa nee to.隨著社會的發(fā)展，人們開始關(guān)注People are attach ing more and more importa nee to the in terview duri ng job hunting求職的過程中，人們慢慢意識到面試的重要性。As to whether it is worthwhile .,

7、there is a long-running con troversial debate. It is quite n atural that people from differe nt backgro unds may have diverge nt attitudes towards it.關(guān)于是否值得勺問題，一直以來爭論不休。當然， 不同的人對此可能持不同的觀點。In the process of modern urban development, we often find ourselves in a dilemma.在都市的發(fā)展中，我們往往會陷入困境。Rece ntly the

8、 phe nomenon has aroused wide concern, some people are in alarm that最近，這種現(xiàn)象引起了人們的廣泛關(guān)注，有人開始擔(dān)心The huma n race has en tered a completely new stage in its history, with theincreasingly rapid economic globalization and urbanization, more problems are brought to our atte nti on.人類進入了一個歷史的嶄新的階段，經(jīng)濟全球化、都市化的速

9、度不斷加快，隨之給我們帶來了很多問題。 plays such an importa nt role that it undeni ably becomes the biggest concern of the present world, there comes a question, is it a bless ing or a curse?得非常重要而成為當今世界所關(guān)注的最大的問題，這是無可厚 非的。不過，問題是：我們該如何抉擇?Now we are en teri ng a new era, full of opport un ities and challe nges,現(xiàn)在我們正在進入

10、一個充滿機會和挑戰(zhàn)的新時代。People from differe nt backgro unds would put differe nt in terpretati ons on the same case不同行業(yè)的人對同一種問題的解釋不盡相同。The con troversial issue is ofte n brought into public focus. People from differe nt backgro unds hold differe nt attitudes towards the issue.這中極具爭議性的話題往往很受社會的關(guān)注。不同的人對此問題的看法也不

11、盡相同。Whe n asked .， some people think.while some prefer.說至u，有人認為，而另一些人則認為 。Just as the say ing goes: so many people, so many min ds. It is quite understa ndable that views on this issue vary from pers on to pers on.俗話說，叫不同的人對此有不同的看法是可以理解的。To this issue, differe nt people come up with various attitude

12、s.對于這個問題，不同的人持不同的觀點。There is a good side and a bad side to everythi ng, it goes without say ing that.萬事萬物都有其兩面性，所以，勿庸置疑，。When it comes to . ., most people believe that . ., but other people regard .as 提到 問題，很多人認為 不過，一些人則認為 是When faced with., quite a few people claim that ., but other people thi nk a

13、s.提到 問題，僅少數(shù)人認為，但另一些人則認為。There is a public con troversy no wadays over the issue of . There whocriticize . .argue that ., they believe that .,but people who favor ., on the other hand, argue that.目前，問題爭議較大。批判 的人認為，他們認為，不過，另一方面，贊同 的人則認為Some people are of the opinion that.有些人認為Many people claim that.很多

14、人認為A majority of絕大多數(shù)A large nu mber ofSome people contend that . has proved to bring many adva ntages (disadva ntages)有些人認為 很多有利之處(不利之處)。Those who argue for . say that . .economic development of the cities.覺得的人認為，城市的經(jīng)濟發(fā)展。Some people advocate that 有些人在堅持認為。They hold that .他們認為 。People, who advocate t

15、hat ., have their sound reas ons (gro un ds)堅持認為 的人也有其說法(依據(jù))。Those who have already ben efited from practic ing it sing high praise of it.那些從中受益的人對此大家褒獎。Those who stron gly approve of . . have coge nt reas ons for it.強烈認同 的人有很多原因。Many people would claim that.有人會認為Many people would claim that.有人會認為Pe

16、ople who support . give some or all of the follow ing reas ons.那些支持 點的人列出了如下原因： 。But others hold the view that .但是，另外一些人則認為。觀點的用詞：Attitude, opin io n,與其搭配的動詞以及詞組：Take, have,come up with, set forth, put forwardBut on the other hand, there are also quite a few people who str on glyadvocate that.,.不過，另

17、一方面，也有少部分人堅持認為But people who are ., on the other hand , maintain that.不過，另一方面，的人認為。However, there are a large nu mber of people who hold a differe nt viewconcerning this case.然而，很多人對此有不同的看法。問題用詞： Issue, phenomenon 后接介詞,on, over 等。However, some others argue that.然而，另一些人貝 U 認為However, there are also s

18、ome others who contend that.然而，也有人認為。But other people set forth completely totally different argument con cer ning this case.不過，對于此，另一些人則持完全不同的觀點。Some people exam ine this issue from ano ther an gle.有的人用另一角度來看這一問題。On the other hand, there are also many opp onents who stron gly .另一方面，也有很多反對的人，他們認為。Ac

19、cord ing to my pers on ality and fondn ess, I would prefer . . rather than 根據(jù)我的個性以及興趣，我選擇 不會選擇Pers on ally, I side with the latter (former) opin io n.就我個人而言，我支持后者就我個人而言，我支持后者（前者）Pers on ally, Iam in favor of the former point of view.Pers on ally, Iam in favor of the former point of view.就我個人而言，我較同意前

20、一種看法。就我個人而言，我較同意前一種看法。To my point of view 我認為To my mind, the advantages far overweigh thedrawbacks(disadva ntages, shortco min gs)我認為，優(yōu)點勝過缺點。For my part, I sta nd on side of the latter opinion that.就我而言，我較贊同后一種觀點As far as I am concern ed, I am in cli ned to be on the side of the latterview.在我看來，我較同意

21、后一種觀點。After a thorough consideration, for my part, I am in favor of the latterview that.經(jīng)過深思熟慮，我較支持后一種看法，亦即If asked to make a decision, I would prefer.如果真的需要作出選擇，我寧愿展現(xiàn)問題篇問題的常用詞： questi on, problem, issueRece ntly, the issue of . has bee n brought into public focus.近來，的問題引起了社會的廣泛關(guān)注。Now we are enterin

22、g a brand new era full of opportunities and innovations, and great changes have taken place in people attitude towards some traditi onal practice.現(xiàn)在我們進入了一個充滿機遇和創(chuàng)新的嶄新時代，很多人對某些傳統(tǒng)的看法也發(fā)生了很大改變。Rece ntly the issue of whether or not . has bee n in the limelight and has aroused wide concern in the public.近來

23、，是否 的問題已經(jīng)非常明確而且引起了社會的廣泛關(guān)注。The issue whether it is good or not to . . has aroused a heated discussion all over the coun try.的利與弊已在全國范圍內(nèi)引起熱烈的討論。At present, some people think . .while others claim . .Both sides have their merits.目前，一些人認為 而另一些人則認為。其實，兩種觀點都其可取之處People rarely reach點都其可取之處People rarely reachan absolute consen sus on such a controversial issue.對于這種極具爭議的話題，我們很難作出絕對的回答。People from differe nt backgro unds would put differe nt in terpretati ons on the same case.不同行業(yè)的人對同一種問題的解釋不盡相同。The co