{"id":75065,"date":"2025-09-28T01:10:26","date_gmt":"2025-09-28T01:10:26","guid":{"rendered":"https:\/\/onlineexammaker.com\/kb\/?p=75065"},"modified":"2025-11-01T05:52:57","modified_gmt":"2025-11-01T05:52:57","slug":"15-electrical-engineering-quiz-questions-and-answers-vi","status":"publish","type":"post","link":"https:\/\/onlineexammaker.com\/kb\/vi\/15-electrical-engineering-quiz-questions-and-answers-vi\/","title":{"rendered":"15 C\u00e2u h\u1ecfi v\u00e0 c\u00e2u tr\u1ea3 l\u1eddi c\u1ee7a Quiz K\u1ef9 thu\u1eadt \u0111i\u1ec7n"},"content":{"rendered":"<p>K\u1ef9 thu\u1eadt \u0111i\u1ec7n l\u00e0 m\u1ed9t nh\u00e1nh k\u1ef9 thu\u1eadt li\u00ean quan \u0111\u1ebfn nghi\u00ean c\u1ee9u, thi\u1ebft k\u1ebf v\u00e0 \u1ee9ng d\u1ee5ng c\u00e1c h\u1ec7 th\u1ed1ng v\u00e0 c\u00f4ng ngh\u1ec7 \u0111i\u1ec7n. N\u00f3 bao g\u1ed3m m\u1ed9t lo\u1ea1t c\u00e1c ch\u1ee7 \u0111\u1ec1 li\u00ean quan \u0111\u1ebfn \u0111i\u1ec7n, \u0111i\u1ec7n t\u1eed v\u00e0 \u0111i\u1ec7n t\u1eeb. C\u00e1c k\u1ef9 s\u01b0 \u0111i\u1ec7n ch\u1ecbu tr\u00e1ch nhi\u1ec7m thi\u1ebft k\u1ebf, ph\u00e1t tri\u1ec3n, th\u1eed nghi\u1ec7m v\u00e0 duy tr\u00ec c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec7n v\u00e0 \u0111i\u1ec7n t\u1eed kh\u00e1c nhau, c\u00e1c th\u00e0nh ph\u1ea7n v\u00e0 thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong h\u1ea7u h\u1ebft m\u1ecdi kh\u00eda c\u1ea1nh c\u1ee7a cu\u1ed9c s\u1ed1ng hi\u1ec7n \u0111\u1ea1i.<\/p>\n<p>C\u00e1c l\u0129nh v\u1ef1c ch\u00ednh c\u1ee7a k\u1ef9 thu\u1eadt \u0111i\u1ec7n:<\/p>\n<p>L\u00fd thuy\u1ebft m\u1ea1ch: C\u00e1c k\u1ef9 s\u01b0 \u0111i\u1ec7n nghi\u00ean c\u1ee9u h\u00e0nh vi c\u1ee7a c\u00e1c m\u1ea1ch \u0111i\u1ec7n, \u0111\u00f3 l\u00e0 c\u00e1c \u0111\u01b0\u1eddng d\u1eabn m\u00e0 d\u00f2ng \u0111i\u1ec7n ch\u1ea3y. H\u1ecd ph\u00e2n t\u00edch c\u00e1c m\u1ea1ch \u0111\u1ec3 hi\u1ec3u \u0111i\u1ec7n \u00e1p, d\u00f2ng \u0111i\u1ec7n v\u00e0 ph\u00e2n ph\u1ed1i \u0111i\u1ec7n.<\/p>\n<p>\u0110i\u1ec7n t\u1eed: Khu v\u1ef1c n\u00e0y t\u1eadp trung v\u00e0o vi\u1ec7c thi\u1ebft k\u1ebf v\u00e0 ph\u00e1t tri\u1ec3n c\u00e1c th\u00e0nh ph\u1ea7n v\u00e0 thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed, nh\u01b0 b\u00f3ng b\u00e1n d\u1eabn, m\u1ea1ch t\u00edch h\u1ee3p v\u00e0 vi \u0111i\u1ec1u khi\u1ec3n.<\/p>\n<p>H\u1ec7 th\u1ed1ng \u0111i\u1ec7n: K\u1ef9 thu\u1eadt h\u1ec7 th\u1ed1ng \u0111i\u1ec7n li\u00ean quan \u0111\u1ebfn vi\u1ec7c t\u1ea1o, truy\u1ec1n, ph\u00e2n ph\u1ed1i v\u00e0 s\u1eed d\u1ee5ng n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n. N\u00f3 bao g\u1ed3m c\u00e1c nh\u00e0 m\u00e1y \u0111i\u1ec7n, m\u00e1y bi\u1ebfn \u00e1p, \u0111\u01b0\u1eddng d\u00e2y \u0111i\u1ec7n v\u00e0 l\u01b0\u1edbi \u0111i\u1ec7n.<\/p>\n<p>H\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n: K\u1ef9 thu\u1eadt h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n li\u00ean quan \u0111\u1ebfn vi\u1ec7c thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec1u ch\u1ec9nh v\u00e0 ki\u1ec3m so\u00e1t h\u00e0nh vi c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng kh\u00e1c. Khu v\u1ef1c n\u00e0y l\u00e0 r\u1ea5t quan tr\u1ecdng trong t\u1ef1 \u0111\u1ed9ng h\u00f3a v\u00e0 robot.<\/p>\n<p>H\u1ec7 th\u1ed1ng truy\u1ec1n th\u00f4ng: C\u00e1c k\u1ef9 s\u01b0 \u0111i\u1ec7n l\u00e0m vi\u1ec7c tr\u00ean thi\u1ebft k\u1ebf v\u00e0 t\u1ed1i \u01b0u h\u00f3a c\u00e1c h\u1ec7 th\u1ed1ng truy\u1ec1n th\u00f4ng, bao g\u1ed3m m\u1ea1ng kh\u00f4ng d\u00e2y, s\u1ee3i quang v\u00e0 truy\u1ec1n th\u00f4ng v\u1ec7 tinh.<\/p>\n<p>X\u1eed l\u00fd t\u00edn hi\u1ec7u s\u1ed1 (DSP): DSP li\u00ean quan \u0111\u1ebfn vi\u1ec7c thao t\u00e1c v\u00e0 ph\u00e2n t\u00edch c\u00e1c t\u00edn hi\u1ec7u, ch\u1eb3ng h\u1ea1n nh\u01b0 \u00e2m thanh, h\u00ecnh \u1ea3nh v\u00e0 video, s\u1eed d\u1ee5ng c\u00e1c k\u1ef9 thu\u1eadt x\u1eed l\u00fd k\u1ef9 thu\u1eadt s\u1ed1.<\/p>\n<p>N\u0103ng l\u01b0\u1ee3ng t\u00e1i t\u1ea1o: V\u1edbi s\u1ef1 t\u1eadp trung ng\u00e0y c\u00e0ng t\u0103ng v\u00e0o t\u00ednh b\u1ec1n v\u1eefng, c\u00e1c k\u1ef9 s\u01b0 \u0111i\u1ec7n tham gia v\u00e0o vi\u1ec7c ph\u00e1t tri\u1ec3n c\u00e1c c\u00f4ng ngh\u1ec7 n\u0103ng l\u01b0\u1ee3ng t\u00e1i t\u1ea1o nh\u01b0 n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi, n\u0103ng l\u01b0\u1ee3ng gi\u00f3 v\u00e0 n\u0103ng l\u01b0\u1ee3ng th\u1ee7y \u0111i\u1ec7n.<\/p>\n<h3>T\u1ed5ng quan b\u00e0i vi\u1ebft<\/h3>\n<ul class=\"article_list\">\n<li><a href=\"#1\">Ph\u1ea7n 1: T\u1ea1o m\u1ed9t b\u00e0i ki\u1ec3m tra \u0111i\u1ec7n tuy\u1ec7t v\u1eddi s\u1eed d\u1ee5ng AI ngay l\u1eadp t\u1ee9c trong OnlineExamMaker<\/a><\/li>\n<li><a href=\"#2\">Ph\u1ea7n 2: 15 C\u00e2u h\u1ecfi &#038; c\u00e2u tr\u1ea3 l\u1eddi c\u1ee7a Quiz K\u1ef9 thu\u1eadt \u0111i\u1ec7n<\/a><\/li>\n<li><a href=\"#3\">Ph\u1ea7n 3: Tr\u00ecnh t\u1ea1o c\u00e2u h\u1ecfi AI &#8211; t\u1ef1 \u0111\u1ed9ng t\u1ea1o c\u00e2u h\u1ecfi cho \u0111\u00e1nh gi\u00e1 ti\u1ebfp theo c\u1ee7a b\u1ea1n<\/a><\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/onlineexammaker.com\/kb\/wp-content\/uploads\/2023\/08\/electrical-engineering.webp\" alt=\"\"\/><\/p>\n<h3 id=\"1\">Ph\u1ea7n 1: T\u1ea1o m\u1ed9t b\u00e0i ki\u1ec3m tra \u0111i\u1ec7n tuy\u1ec7t v\u1eddi s\u1eed d\u1ee5ng AI ngay l\u1eadp t\u1ee9c trong OnlineExamMaker<\/h3>\n<p>Ng\u00e0y nay, ng\u00e0y c\u00e0ng c\u00f3 nhi\u1ec1u ng\u01b0\u1eddi t\u1ea1o ra c\u00e1c c\u00e2u \u0111\u1ed1 \u0111i\u1ec7n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng ngh\u1ec7 AI, OnlineExamMaker m\u1ed9t c\u00f4ng c\u1ee5 l\u00e0m b\u00e0i ki\u1ec3m tra d\u1ef1a tr\u00ean AI m\u1ea1nh m\u1ebd c\u00f3 th\u1ec3 gi\u00fap b\u1ea1n ti\u1ebft ki\u1ec7m th\u1eddi gian v\u00e0 n\u1ed7 l\u1ef1c. Ph\u1ea7n m\u1ec1m l\u00e0m cho n\u00f3 \u0111\u01a1n gi\u1ea3n \u0111\u1ec3 thi\u1ebft k\u1ebf v\u00e0 kh\u1edfi ch\u1ea1y c\u00e1c c\u00e2u \u0111\u1ed1, \u0111\u00e1nh gi\u00e1 v\u00e0 kh\u1ea3o s\u00e1t t\u01b0\u01a1ng t\u00e1c. V\u1edbi tr\u00ecnh ch\u1ec9nh s\u1eeda c\u00e2u h\u1ecfi, b\u1ea1n c\u00f3 th\u1ec3 t\u1ea1o nhi\u1ec1u l\u1ef1a ch\u1ecdn, k\u1ebft th\u00fac m\u1edf, k\u1ebft h\u1ee3p, gi\u1ea3i tr\u00ecnh t\u1ef1 v\u00e0 nhi\u1ec1u lo\u1ea1i c\u00e2u h\u1ecfi kh\u00e1c cho c\u00e1c b\u00e0i ki\u1ec3m tra, b\u00e0i ki\u1ec3m tra v\u00e0 ki\u1ec3m k\u00ea c\u1ee7a b\u1ea1n. B\u1ea1n \u0111\u01b0\u1ee3c ph\u00e9p t\u0103ng c\u01b0\u1eddng c\u00e1c c\u00e2u \u0111\u1ed1 v\u1edbi c\u00e1c y\u1ebfu t\u1ed1 \u0111a ph\u01b0\u01a1ng ti\u1ec7n nh\u01b0 h\u00ecnh \u1ea3nh, \u00e2m thanh v\u00e0 video \u0111\u1ec3 l\u00e0m cho ch\u00fang t\u01b0\u01a1ng t\u00e1c h\u01a1n v\u00e0 h\u1ea5p d\u1eabn tr\u1ef1c quan h\u01a1n.<\/p>\n<p><strong> C\u00e1c t\u00ednh n\u0103ng \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t cho b\u1ea1n: <\/strong><br \/>\n\u25cf Ng\u0103n ch\u1eb7n gian l\u1eadn b\u1eb1ng c\u00e1ch ch\u1ecdn ng\u1eabu nhi\u00ean c\u00e1c c\u00e2u h\u1ecfi ho\u1eb7c thay \u0111\u1ed5i th\u1ee9 t\u1ef1 c\u00e2u h\u1ecfi, v\u00ec v\u1eady ng\u01b0\u1eddi h\u1ecdc kh\u00f4ng nh\u1eadn \u0111\u01b0\u1ee3c c\u00f9ng m\u1ed9t b\u1ed9 c\u00e2u h\u1ecfi m\u1ed7i l\u1ea7n.<br \/>\n\u25cf T\u1ef1 \u0111\u1ed9ng t\u1ea1o c\u00e1c b\u00e1o c\u00e1o chi ti\u1ebft v\u1ec1 \u0111i\u1ec3m s\u1ed1 c\u00e1 nh\u00e2n, b\u00e1o c\u00e1o c\u00e2u h\u1ecfi v\u00e0 hi\u1ec7u su\u1ea5t nh\u00f3m.<br \/>\n\u25cf Ch\u1ec9 c\u1ea7n sao ch\u00e9p m\u1ed9t v\u00e0i d\u00f2ng m\u00e3 v\u00e0 th\u00eam ch\u00fang v\u00e0o m\u1ed9t trang web, b\u1ea1n c\u00f3 th\u1ec3 tr\u00ecnh b\u00e0y b\u00e0i ki\u1ec3m tra tr\u1ef1c tuy\u1ebfn c\u1ee7a m\u00ecnh trong trang web, blog ho\u1eb7c trang \u0111\u00edch c\u1ee7a b\u1ea1n.<br \/>\n\u25cf Cung c\u1ea5p ph\u00e2n t\u00edch c\u00e2u h\u1ecfi \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a c\u00e2u h\u1ecfi, gi\u00fap ng\u01b0\u1eddi h\u01b0\u1edbng d\u1eabn t\u1ed1i \u01b0u h\u00f3a k\u1ebf ho\u1ea1ch \u0111\u00e0o t\u1ea1o c\u1ee7a h\u1ecd.<\/p>\n<div class=\"embed_video_blog\">\n<div class=\"embed-responsive embed-responsive-16by9\" style=\"margin-bottom:16px;\">\n <iframe class=\"embed-responsive-item\" src=\"https:\/\/www.youtube.com\/embed\/zlqho9igH2Y\"><\/iframe>\n<\/div>\n<\/div>\n<div class=\"getstarted-container\">\n<p style=\"margin-bottom: 13px;\">T\u1ef1 \u0111\u1ed9ng t\u1ea1o c\u00e2u h\u1ecfi b\u1eb1ng AI<\/p>\n<div class=\"blog_double_btn clearfix\">\n<div class=\"col-sm-6  col-xs-12\">\n<div class=\"p-style-a\"><a class=\"get_started_btn\" href=\"https:\/\/onlineexammaker.com\/features\/ai-question-generator.html?refer=download_questions\" target=\"_blank\" rel=\"noopener\">Tr\u00ecnh t\u1ea1o c\u00e2u h\u1ecfi AI<\/a><\/div>\n<div class=\"p-style-b\">T\u1ea1o c\u00e2u h\u1ecfi cho b\u1ea5t k\u1ef3 ch\u1ee7 \u0111\u1ec1 n\u00e0o<\/div>\n<\/div>\n<div class=\"col-sm-6  col-xs-12\">\n<div class=\"p-style-a\"><a class=\"get_started_btn\" href=\"https:\/\/onlineexammaker.com\/sign-up.html?refer=blog_btn\"> T\u1ea1o m\u1ed9t c\u00e2u \u0111\u1ed1<\/a><\/div>\n<div class=\"p-style-b\">Mi\u1ec5n ph\u00ed 100% m\u00e3i m\u00e3i<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h3 id=\"2\">Ph\u1ea7n 2: 15 C\u00e2u h\u1ecfi &#038; c\u00e2u tr\u1ea3 l\u1eddi c\u1ee7a Quiz K\u1ef9 thu\u1eadt \u0111i\u1ec7n<\/h3>\n<p><button id=\"copyquestionsBtn\" type=\"button\" onclick=\"myFunction()\">Sao ch\u00e9p c\u00e2u h\u1ecfi<\/button>\u00a0\u00a0or\u00a0\u00a0<button id=\"genquestionsBtn\" class=\"genbtnstyle\" type=\"button\" onclick=\"myFunction1()\">T\u1ea1o c\u00e2u h\u1ecfi b\u1eb1ng AI<\/button><\/p>\n<div id=\"copy_questions\">\n<p>C\u00e2u h\u1ecfi 1:<br \/>\nTrong m\u1ea1ch \u0111i\u1ec7n, \u0111\u1ecbnh lu\u1eadt Ohm cho bi\u1ebft m\u1ed1i quan h\u1ec7 gi\u1eefa \u0111i\u1ec7n \u00e1p (V), c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n (I) v\u00e0 \u0111i\u1ec7n tr\u1edf (R) l\u00e0 g\u00ec?<br \/>\nA. V = I + R<br \/>\nB. V = I * R<br \/>\nC. V = I \/ R<br \/>\nD. V = I &#8211; R<br \/>\n\u0110\u00e1p \u00e1n: B<br \/>\nGi\u1ea3i th\u00edch: \u0110\u1ecbnh lu\u1eadt Ohm n\u00eau r\u1eb1ng \u0111i\u1ec7n \u00e1p b\u1eb1ng c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n nh\u00e2n v\u1edbi \u0111i\u1ec7n tr\u1edf, t\u1ee9c V = I * R, \u0111\u00e2y l\u00e0 c\u01a1 s\u1edf \u0111\u1ec3 t\u00ednh to\u00e1n c\u00e1c th\u00f4ng s\u1ed1 trong m\u1ea1ch \u0111i\u1ec7n.<\/p>\n<p>C\u00e2u h\u1ecfi 2:<br \/>\nKirchhoff&#8217;s \u0111\u1ecbnh lu\u1eadt d\u00f2ng \u0111i\u1ec7n \u0111\u1ea7u ti\u00ean (\u0110\u1ecbnh lu\u1eadt n\u00fat) kh\u1eb3ng \u0111\u1ecbnh r\u1eb1ng:<br \/>\nA. T\u1ed5ng \u0111i\u1ec7n \u00e1p quanh m\u1ed9t v\u00f2ng k\u00edn b\u1eb1ng kh\u00f4ng.<br \/>\nB. T\u1ed5ng d\u00f2ng \u0111i\u1ec7n \u0111i v\u00e0o m\u1ed9t n\u00fat b\u1eb1ng t\u1ed5ng d\u00f2ng \u0111i\u1ec7n \u0111i ra.<br \/>\nC. \u0110i\u1ec7n tr\u1edf t\u1ec9 l\u1ec7 ngh\u1ecbch v\u1edbi di\u1ec7n t\u00edch m\u1eb7t c\u1eaft.<br \/>\nD. C\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n t\u1ec9 l\u1ec7 thu\u1eadn v\u1edbi \u0111i\u1ec7n \u00e1p.<br \/>\n\u0110\u00e1p \u00e1n: B<br \/>\nGi\u1ea3i th\u00edch: \u0110\u1ecbnh lu\u1eadt n\u00fat c\u1ee7a Kirchhoff cho r\u1eb1ng t\u1ea1i b\u1ea5t k\u1ef3 n\u00fat n\u00e0o trong m\u1ea1ch, t\u1ed5ng d\u00f2ng \u0111i\u1ec7n \u0111i v\u00e0o b\u1eb1ng t\u1ed5ng d\u00f2ng \u0111i\u1ec7n \u0111i ra, \u0111\u1ea3m b\u1ea3o b\u1ea3o to\u00e0n d\u00f2ng \u0111i\u1ec7n.<\/p>\n<p>C\u00e2u h\u1ecfi 3:<br \/>\nDung kh\u00e1ng c\u1ee7a m\u1ed9t t\u1ee5 \u0111i\u1ec7n thay \u0111\u1ed5i nh\u01b0 th\u1ebf n\u00e0o khi t\u1ea7n s\u1ed1 c\u1ee7a d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u t\u0103ng l\u00ean?<br \/>\nA. T\u0103ng l\u00ean<br \/>\nB. Gi\u1ea3m xu\u1ed1ng<br \/>\nC. Kh\u00f4ng thay \u0111\u1ed5i<br \/>\nD. Tr\u1edf th\u00e0nh v\u00f4 h\u1ea1n<br \/>\n\u0110\u00e1p \u00e1n: B<br \/>\nGi\u1ea3i th\u00edch: Dung kh\u00e1ng (Xc) \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng c\u00f4ng th\u1ee9c Xc = 1 \/ (2\u03c0fC), n\u00ean khi t\u1ea7n s\u1ed1 f t\u0103ng, dung kh\u00e1ng gi\u1ea3m, l\u00e0m cho t\u1ee5 \u0111i\u1ec7n cho ph\u00e9p d\u00f2ng \u0111i\u1ec7n ch\u1ea3y d\u1ec5 d\u00e0ng h\u01a1n.<\/p>\n<p>C\u00e2u h\u1ecfi 4:<br \/>\nS\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u (DC) v\u00e0 d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u (AC) l\u00e0:<br \/>\nA. DC c\u00f3 t\u1ea7n s\u1ed1, AC th\u00ec kh\u00f4ng.<br \/>\nB. AC thay \u0111\u1ed5i h\u01b0\u1edbng theo th\u1eddi gian, trong khi DC gi\u1eef h\u01b0\u1edbng kh\u00f4ng \u0111\u1ed5i.<br \/>\nC. DC ch\u1ec9 d\u00f9ng trong pin, AC d\u00f9ng trong l\u01b0\u1edbi \u0111i\u1ec7n.<br \/>\nD. AC c\u00f3 \u0111i\u1ec7n \u00e1p cao h\u01a1n DC.<br \/>\n\u0110\u00e1p \u00e1n: B<br \/>\nGi\u1ea3i th\u00edch: D\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u (AC) thay \u0111\u1ed5i h\u01b0\u1edbng \u0111\u1ecbnh k\u1ef3, trong khi d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u (DC) duy tr\u00ec h\u01b0\u1edbng kh\u00f4ng \u0111\u1ed5i, \u0111\u00e2y l\u00e0 \u0111\u1eb7c t\u00ednh c\u01a1 b\u1ea3n c\u1ee7a hai lo\u1ea1i d\u00f2ng \u0111i\u1ec7n.<\/p>\n<p>C\u00e2u h\u1ecfi 5:<br \/>\nM\u00e1y bi\u1ebfn th\u1ebf ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean nguy\u00ean l\u00fd n\u00e0o?<br \/>\nA. \u0110\u1ecbnh lu\u1eadt Faraday v\u1ec1 c\u1ea3m \u1ee9ng \u0111i\u1ec7n t\u1eeb.<br \/>\nB. \u0110\u1ecbnh lu\u1eadt Ohm.<br \/>\nC. Hi\u1ec7u \u1ee9ng Hall.<br \/>\nD. Nguy\u00ean l\u00fd quang \u0111i\u1ec7n.<br \/>\n\u0110\u00e1p \u00e1n: A<br \/>\nGi\u1ea3i th\u00edch: M\u00e1y bi\u1ebfn th\u1ebf s\u1eed d\u1ee5ng \u0111\u1ecbnh lu\u1eadt Faraday, n\u01a1i bi\u1ebfn thi\u00ean t\u1eeb tr\u01b0\u1eddng t\u1ea1o ra \u0111i\u1ec7n \u00e1p c\u1ea3m \u1ee9ng, gi\u00fap thay \u0111\u1ed5i m\u1ee9c \u0111i\u1ec7n \u00e1p m\u00e0 kh\u00f4ng l\u00e0m thay \u0111\u1ed5i c\u00f4ng su\u1ea5t.<\/p>\n<p>C\u00e2u h\u1ecfi 6:<br \/>\nCh\u1ea5t b\u00e1n d\u1eabn ph\u1ed5 bi\u1ebfn nh\u1ea5t d\u00f9ng trong \u0111i\u1ed1t l\u00e0:<br \/>\nA. \u0110\u1ed3ng (Cu)<br \/>\nB. Silic (Si)<br \/>\nC. V\u00e0ng (Au)<br \/>\nD. \u0110\u1ed3ng thau<br \/>\n\u0110\u00e1p \u00e1n: B<br \/>\nGi\u1ea3i th\u00edch: Silic l\u00e0 ch\u1ea5t b\u00e1n d\u1eabn ph\u1ed5 bi\u1ebfn do c\u00f3 kho\u1ea3ng c\u1ea5m ph\u00f9 h\u1ee3p, cho ph\u00e9p \u0111i\u1ec1u khi\u1ec3n d\u00f2ng \u0111i\u1ec7n b\u1eb1ng c\u00e1ch pha t\u1ea1p, th\u01b0\u1eddng d\u00f9ng trong \u0111i\u1ed1t v\u00e0 transistor.<\/p>\n<p>C\u00e2u h\u1ecfi 7:<br \/>\nCh\u1ee9c n\u0103ng ch\u00ednh c\u1ee7a \u0111i\u1ed1t trong m\u1ea1ch \u0111i\u1ec7n l\u00e0:<br \/>\nA. Ph\u00f3ng \u0111\u1ea1i t\u00edn hi\u1ec7u.<br \/>\nB. Cho ph\u00e9p d\u00f2ng \u0111i\u1ec7n ch\u1ea3y theo m\u1ed9t chi\u1ec1u.<br \/>\nC. L\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng.<br \/>\nD. T\u1ea1o ra t\u1eeb tr\u01b0\u1eddng.<br \/>\n\u0110\u00e1p \u00e1n: B<br \/>\nGi\u1ea3i th\u00edch: \u0110i\u1ed1t l\u00e0 linh ki\u1ec7n b\u00e1n d\u1eabn cho ph\u00e9p d\u00f2ng \u0111i\u1ec7n ch\u1ea3y theo m\u1ed9t h\u01b0\u1edbng (t\u1eeb anode \u0111\u1ebfn cathode) v\u00e0 ch\u1eb7n ng\u01b0\u1ee3c l\u1ea1i, d\u00f9ng \u0111\u1ec3 ch\u1ec9nh l\u01b0u ho\u1eb7c b\u1ea3o v\u1ec7 m\u1ea1ch.<\/p>\n<p>C\u00e2u h\u1ecfi 8:<br \/>\nTransistor l\u01b0\u1ee1ng c\u1ef1c (BJT) c\u00f3 hai lo\u1ea1i ch\u00ednh l\u00e0:<br \/>\nA. NPN v\u00e0 PNP<br \/>\nB. MOSFET v\u00e0 JFET<br \/>\nC. \u0110i\u1ed1t v\u00e0 thyristor<br \/>\nD. Capacitor v\u00e0 inductor<br \/>\n\u0110\u00e1p \u00e1n: A<br \/>\nGi\u1ea3i th\u00edch: Transistor BJT \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i th\u00e0nh NPN v\u00e0 PNP d\u1ef1a tr\u00ean c\u1ea5u tr\u00fac l\u1edbp b\u00e1n d\u1eabn, d\u00f9ng \u0111\u1ec3 khu\u1ebfch \u0111\u1ea1i, chuy\u1ec3n m\u1ea1ch ho\u1eb7c \u0111i\u1ec1u khi\u1ec3n d\u00f2ng \u0111i\u1ec7n.<\/p>\n<p>C\u00e2u h\u1ecfi 9:<br \/>\nB\u1ed9 khu\u1ebfch \u0111\u1ea1i ho\u1ea1t \u0111\u1ed9ng tuy\u1ebfn t\u00ednh c\u00f3 \u0111\u1eb7c t\u00ednh n\u00e0o sau \u0111\u00e2y?<br \/>\nA. Kh\u00f4ng thay \u0111\u1ed5i t\u00edn hi\u1ec7u \u0111\u1ea7u v\u00e0o.<br \/>\nB. Ph\u00f3ng \u0111\u1ea1i t\u00edn hi\u1ec7u m\u00e0 kh\u00f4ng l\u00e0m bi\u1ebfn d\u1ea1ng.<br \/>\nC. Ch\u1ec9 khu\u1ebfch \u0111\u1ea1i t\u00edn hi\u1ec7u s\u1ed1.<br \/>\nD. T\u1ea1o ra t\u00edn hi\u1ec7u m\u1edbi.<br \/>\n\u0110\u00e1p \u00e1n: B<br \/>\nGi\u1ea3i th\u00edch: B\u1ed9 khu\u1ebfch \u0111\u1ea1i tuy\u1ebfn t\u00ednh ph\u00f3ng \u0111\u1ea1i t\u00edn hi\u1ec7u \u0111\u1ea7u v\u00e0o m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c, gi\u1eef nguy\u00ean h\u00ecnh d\u1ea1ng s\u00f3ng m\u00e0 kh\u00f4ng th\u00eam bi\u1ebfn d\u1ea1ng, d\u00f9ng trong c\u00e1c \u1ee9ng d\u1ee5ng \u00e2m thanh v\u00e0 t\u00edn hi\u1ec7u.<\/p>\n<p>C\u00e2u h\u1ecfi 10:<br \/>\nC\u1eeda logic AND th\u1ef1c hi\u1ec7n ch\u1ee9c n\u0103ng g\u00ec?<br \/>\nA. \u0110\u1ea7u ra l\u00e0 1 n\u1ebfu t\u1ea5t c\u1ea3 \u0111\u1ea7u v\u00e0o l\u00e0 0.<br \/>\nB. \u0110\u1ea7u ra l\u00e0 1 n\u1ebfu \u00edt nh\u1ea5t m\u1ed9t \u0111\u1ea7u v\u00e0o l\u00e0 1.<br \/>\nC. \u0110\u1ea7u ra l\u00e0 1 n\u1ebfu t\u1ea5t c\u1ea3 \u0111\u1ea7u v\u00e0o l\u00e0 1.<br \/>\nD. \u0110\u1ea7u ra lu\u00f4n l\u00e0 0.<br \/>\n\u0110\u00e1p \u00e1n: C<br \/>\nGi\u1ea3i th\u00edch: C\u1eeda logic AND cho \u0111\u1ea7u ra l\u00e0 1 ch\u1ec9 khi t\u1ea5t c\u1ea3 \u0111\u1ea7u v\u00e0o \u0111\u1ec1u l\u00e0 1; n\u1ebfu b\u1ea5t k\u1ef3 \u0111\u1ea7u v\u00e0o n\u00e0o l\u00e0 0, \u0111\u1ea7u ra s\u1ebd l\u00e0 0, \u0111\u00e2y l\u00e0 c\u01a1 s\u1edf c\u1ee7a c\u00e1c m\u1ea1ch s\u1ed1.<\/p>\n<p>C\u00e2u h\u1ecfi 11:<br \/>\nM\u00e1y ph\u00e1t \u0111i\u1ec7n xoay chi\u1ec1u (generator) chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng n\u00e0o th\u00e0nh \u0111i\u1ec7n n\u0103ng?<br \/>\nA. N\u0103ng l\u01b0\u1ee3ng h\u00f3a h\u1ecdc<br \/>\nB. N\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc<br \/>\nC. N\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t<br \/>\nD. N\u0103ng l\u01b0\u1ee3ng \u00e1nh s\u00e1ng<br \/>\n\u0110\u00e1p \u00e1n: B<br \/>\nGi\u1ea3i th\u00edch: M\u00e1y ph\u00e1t \u0111i\u1ec7n xoay chi\u1ec1u s\u1eed d\u1ee5ng nguy\u00ean l\u00fd c\u1ea3m \u1ee9ng \u0111i\u1ec7n t\u1eeb \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc (t\u1eeb tua bin) th\u00e0nh \u0111i\u1ec7n n\u0103ng xoay chi\u1ec1u.<\/p>\n<p>C\u00e2u h\u1ecfi 12:<br \/>\nY\u1ebfu t\u1ed1 c\u00f4ng su\u1ea5t (power factor) trong h\u1ec7 th\u1ed1ng \u0111i\u1ec7n l\u00e0 g\u00ec?<br \/>\nA. T\u1ec9 l\u1ec7 gi\u1eefa c\u00f4ng su\u1ea5t bi\u1ec3u ki\u1ebfn v\u00e0 c\u00f4ng su\u1ea5t th\u1ef1c.<br \/>\nB. T\u1ec9 l\u1ec7 gi\u1eefa \u0111i\u1ec7n \u00e1p v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n.<br \/>\nC. T\u1ed5ng \u0111i\u1ec7n tr\u1edf c\u1ee7a m\u1ea1ch.<br \/>\nD. T\u1ea7n s\u1ed1 c\u1ee7a d\u00f2ng \u0111i\u1ec7n.<br \/>\n\u0110\u00e1p \u00e1n: A<br \/>\nGi\u1ea3i th\u00edch: Y\u1ebfu t\u1ed1 c\u00f4ng su\u1ea5t l\u00e0 cos \u03c6, \u0111\u1ea1i di\u1ec7n cho t\u1ec9 l\u1ec7 gi\u1eefa c\u00f4ng su\u1ea5t th\u1ef1c (P) v\u00e0 c\u00f4ng su\u1ea5t bi\u1ec3u ki\u1ebfn (S), gi\u00fap \u0111\u00e1nh gi\u00e1 hi\u1ec7u su\u1ea5t c\u1ee7a h\u1ec7 th\u1ed1ng \u0111i\u1ec7n.<\/p>\n<p>C\u00e2u h\u1ecfi 13:<br \/>\nH\u1ec7 th\u1ed1ng \u0111i\u1ec7n ba pha c\u00f3 l\u1ee3i \u00edch n\u00e0o sau \u0111\u00e2y?<br \/>\nA. Gi\u1ea3m chi ph\u00ed l\u1eafp \u0111\u1eb7t so v\u1edbi h\u1ec7 th\u1ed1ng m\u1ed9t pha.<br \/>\nB. Cung c\u1ea5p c\u00f4ng su\u1ea5t \u1ed5n \u0111\u1ecbnh v\u00e0 hi\u1ec7u qu\u1ea3 h\u01a1n.<br \/>\nC. Ch\u1ec9 d\u00f9ng cho thi\u1ebft b\u1ecb nh\u1ecf.<br \/>\nD. Kh\u00f4ng c\u1ea7n bi\u1ebfn th\u1ebf.<br \/>\n\u0110\u00e1p \u00e1n: B<br \/>\nGi\u1ea3i th\u00edch: H\u1ec7 th\u1ed1ng ba pha cung c\u1ea5p c\u00f4ng su\u1ea5t li\u00ean t\u1ee5c v\u00e0 hi\u1ec7u qu\u1ea3 h\u01a1n so v\u1edbi m\u1ed9t pha, th\u01b0\u1eddng d\u00f9ng cho c\u00e1c t\u1ea3i l\u1edbn nh\u01b0 \u0111\u1ed9ng c\u01a1 v\u00e0 m\u00e1y c\u00f4ng nghi\u1ec7p.<\/p>\n<p>C\u00e2u h\u1ecfi 14:<br \/>\nNguy\u00ean l\u00fd c\u1ea3m \u1ee9ng \u0111i\u1ec7n t\u1eeb \u0111\u01b0\u1ee3c ph\u00e1t bi\u1ec3u b\u1edfi ai?<br \/>\nA. Ohm<br \/>\nB. Faraday<br \/>\nC. Kirchhoff<br \/>\nD. Tesla<br \/>\n\u0110\u00e1p \u00e1n: B<br \/>\nGi\u1ea3i th\u00edch: Michael Faraday ph\u00e1t bi\u1ec3u nguy\u00ean l\u00fd c\u1ea3m \u1ee9ng \u0111i\u1ec7n t\u1eeb, cho r\u1eb1ng bi\u1ebfn thi\u00ean t\u1eeb tr\u01b0\u1eddng t\u1ea1o ra \u0111i\u1ec7n \u00e1p c\u1ea3m \u1ee9ng, n\u1ec1n t\u1ea3ng cho nhi\u1ec1u thi\u1ebft b\u1ecb \u0111i\u1ec7n.<\/p>\n<p>C\u00e2u h\u1ecfi 15:<br \/>\nBi\u1ec7n ph\u00e1p an to\u00e0n ch\u00ednh trong k\u1ef9 thu\u1eadt \u0111i\u1ec7n l\u00e0 g\u00ec?<br \/>\nA. S\u1eed d\u1ee5ng \u0111i\u1ec7n \u00e1p cao \u0111\u1ec3 t\u0103ng hi\u1ec7u su\u1ea5t.<br \/>\nB. Ki\u1ec3m tra v\u00e0 s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 nh\u01b0 c\u1ea7u ch\u00ec.<br \/>\nC. K\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp v\u1edbi ngu\u1ed3n \u0111i\u1ec7n m\u00e0 kh\u00f4ng c\u1ea7n c\u00e1ch ly.<br \/>\nD. B\u1ecf qua ki\u1ec3m tra d\u00e2y \u0111\u1ea5t.<br \/>\n\u0110\u00e1p \u00e1n: B<br \/>\nGi\u1ea3i th\u00edch: Thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 nh\u01b0 c\u1ea7u ch\u00ec ho\u1eb7c aptomat gi\u00fap ng\u0103n ch\u1eb7n ng\u1eafn m\u1ea1ch v\u00e0 \u0111i\u1ec7n gi\u1eadt, \u0111\u1ea3m b\u1ea3o an to\u00e0n cho ng\u01b0\u1eddi s\u1eed d\u1ee5ng v\u00e0 thi\u1ebft b\u1ecb.<\/p>\n<\/div>\n<p><button id=\"copyquestionsBtn\" type=\"button\" onclick=\"myFunction()\">Sao ch\u00e9p c\u00e2u h\u1ecfi<\/button>\u00a0\u00a0or\u00a0\u00a0<button id=\"genquestionsBtn\" class=\"genbtnstyle\" type=\"button\" onclick=\"myFunction1()\">T\u1ea1o c\u00e2u h\u1ecfi b\u1eb1ng AI<\/button><\/p>\n<h3 id=\"3\">Ph\u1ea7n 3: Tr\u00ecnh t\u1ea1o c\u00e2u h\u1ecfi AI &#8211; t\u1ef1 \u0111\u1ed9ng t\u1ea1o c\u00e2u h\u1ecfi cho \u0111\u00e1nh gi\u00e1 ti\u1ebfp theo c\u1ee7a b\u1ea1n<\/h3>\n<div class=\"embed_video_blog\">\n<div class=\"embed-responsive embed-responsive-16by9\" style=\"margin-bottom:16px;\">\n <iframe class=\"embed-responsive-item\" src=\"https:\/\/www.youtube.com\/embed\/zlqho9igH2Y\"><\/iframe>\n<\/div>\n<\/div>\n<div class=\"getstarted-container\">\n<p style=\"margin-bottom: 13px;\">T\u1ef1 \u0111\u1ed9ng t\u1ea1o c\u00e2u h\u1ecfi b\u1eb1ng AI<\/p>\n<div class=\"blog_double_btn clearfix\">\n<div class=\"col-sm-6  col-xs-12\">\n<div class=\"p-style-a\"><a class=\"get_started_btn\" href=\"https:\/\/onlineexammaker.com\/features\/ai-question-generator.html?refer=download_questions\" target=\"_blank\" rel=\"noopener\">Tr\u00ecnh t\u1ea1o c\u00e2u h\u1ecfi AI<\/a><\/div>\n<div class=\"p-style-b\">T\u1ea1o c\u00e2u h\u1ecfi cho b\u1ea5t k\u1ef3 ch\u1ee7 \u0111\u1ec1 n\u00e0o<\/div>\n<\/div>\n<div class=\"col-sm-6  col-xs-12\">\n<div class=\"p-style-a\"><a class=\"get_started_btn\" href=\"https:\/\/onlineexammaker.com\/sign-up.html?refer=blog_btn\"> T\u1ea1o m\u1ed9t c\u00e2u \u0111\u1ed1<\/a><\/div>\n<div class=\"p-style-b\">Mi\u1ec5n ph\u00ed 100% m\u00e3i m\u00e3i<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><script src=\"https:\/\/unpkg.com\/@popperjs\/core@2\"><\/script><br \/>\n<script src=\"https:\/\/unpkg.com\/tippy.js@6\"><\/script><\/p>\n<p><script type=\"text\/javascript\">\nfunction myFunction() {\nvar copyText = document.getElementById(\"copy_questions\");console.log(copyText.innerText);navigator.clipboard.writeText(copyText.innerText);\n}\nfunction myFunction1() {\n\u00a0  \u00a0 \u00a0 window.open(\"https:\/\/onlineexammaker.com\/features\/ai-question-generator.html\");\n\u00a0 }\nvar copy1, copy2;\n        tippy('#copyquestionsBtn', {\n        'content': \"Copy questions to clipboard\",\n       trigger: 'mouseenter',\n       'onCreate':function(instance){\n              copy1 = instance;\n       },\n       'onTrigger' : function(instance, event) {\n              copy2.hide();\n       }\n       });\n       tippy('#copyquestionsBtn', {\n       'content': \"Copied successfully\",\n       trigger: 'click',\n       'onCreate':function(instance){\n              copy2 = instance;\n       },\n       'onTrigger' : function(instance, event) {\n              copy1.hide();\n       }\n       });\ntippy('#genquestionsBtn', {\n        'content': \"Generate questions using AI for free\",\n         trigger: 'mouseenter'\n       });\n<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>K\u1ef9 thu\u1eadt \u0111i\u1ec7n l\u00e0 m\u1ed9t nh\u00e1nh k\u1ef9 thu\u1eadt li\u00ean quan \u0111\u1ebfn nghi\u00ean c\u1ee9u, thi\u1ebft k\u1ebf v\u00e0 \u1ee9ng d\u1ee5ng c\u00e1c h\u1ec7 th\u1ed1ng v\u00e0 c\u00f4ng ngh\u1ec7 \u0111i\u1ec7n. N\u00f3 bao g\u1ed3m m\u1ed9t lo\u1ea1t c\u00e1c ch\u1ee7 \u0111\u1ec1 li\u00ean quan \u0111\u1ebfn \u0111i\u1ec7n, \u0111i\u1ec7n t\u1eed v\u00e0 \u0111i\u1ec7n t\u1eeb. C\u00e1c k\u1ef9 s\u01b0 \u0111i\u1ec7n ch\u1ecbu tr\u00e1ch nhi\u1ec7m thi\u1ebft k\u1ebf, ph\u00e1t tri\u1ec3n, th\u1eed nghi\u1ec7m [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":17047,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6049],"tags":[],"class_list":["post-75065","post","type-post","status-publish","format-standard","hentry","category-questions-answers-vi"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>15 C\u00e2u h\u1ecfi v\u00e0 c\u00e2u tr\u1ea3 l\u1eddi c\u1ee7a Quiz K\u1ef9 thu\u1eadt \u0111i\u1ec7n - OnlineExamMaker Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/onlineexammaker.com\/kb\/vi\/15-electrical-engineering-quiz-questions-and-answers-vi\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"15 C\u00e2u h\u1ecfi v\u00e0 c\u00e2u tr\u1ea3 l\u1eddi c\u1ee7a Quiz K\u1ef9 thu\u1eadt \u0111i\u1ec7n - OnlineExamMaker Blog\" \/>\n<meta property=\"og:description\" content=\"K\u1ef9 thu\u1eadt \u0111i\u1ec7n l\u00e0 m\u1ed9t nh\u00e1nh k\u1ef9 thu\u1eadt li\u00ean quan \u0111\u1ebfn nghi\u00ean c\u1ee9u, thi\u1ebft k\u1ebf v\u00e0 \u1ee9ng d\u1ee5ng c\u00e1c h\u1ec7 th\u1ed1ng v\u00e0 c\u00f4ng ngh\u1ec7 \u0111i\u1ec7n. 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