{"id":19359,"date":"2025-07-07T05:50:04","date_gmt":"2025-07-06T22:50:04","guid":{"rendered":"https:\/\/www.ckconitsha.com\/vn\/?p=19359"},"modified":"2025-07-07T11:05:53","modified_gmt":"2025-07-07T04:05:53","slug":"vi-sao-phai-truyen-tai-dien-nang-di-xa","status":"publish","type":"post","link":"https:\/\/www.ckconitsha.com\/vn\/vi-sao-phai-truyen-tai-dien-nang-di-xa\/","title":{"rendered":"V\u00ec sao ph\u1ea3i truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng \u0111i xa?"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_79_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.ckconitsha.com\/vn\/vi-sao-phai-truyen-tai-dien-nang-di-xa\/#Tai_sao_phai_truyen_tai_dien_nang_di_xa\" >T\u1ea1i sao ph\u1ea3i truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng \u0111i xa?\u00a0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.ckconitsha.com\/vn\/vi-sao-phai-truyen-tai-dien-nang-di-xa\/#Su_hao_phi_dien_nang_tren_duong_day_truyen_tai_dien\" >S\u1ef1 hao ph\u00ed \u0111i\u1ec7n n\u0103ng tr\u00ean \u0111\u01b0\u1eddng d\u00e2y truy\u1ec1n t\u1ea3i \u0111i\u1ec7n\u00a0<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.ckconitsha.com\/vn\/vi-sao-phai-truyen-tai-dien-nang-di-xa\/#Tinh_dien_nang_hao_phi_tren_duong_day_truyen_tai_dien\" >T\u00ednh \u0111i\u1ec7n n\u0103ng hao ph\u00ed tr\u00ean \u0111\u01b0\u1eddng d\u00e2y truy\u1ec1n t\u1ea3i \u0111i\u1ec7n\u00a0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.ckconitsha.com\/vn\/vi-sao-phai-truyen-tai-dien-nang-di-xa\/#Cach_lam_giam_hao_phi\" >C\u00e1ch l\u00e0m gi\u1ea3m hao ph\u00ed\u00a0<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.ckconitsha.com\/vn\/vi-sao-phai-truyen-tai-dien-nang-di-xa\/#Vai_tro_cua_may_bien_the_trong_truyen_tai_dien_nang_di_xa\" >Vai tr\u00f2 c\u1ee7a m\u00e1y bi\u1ebfn th\u1ebf trong truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng \u0111i xa<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.ckconitsha.com\/vn\/vi-sao-phai-truyen-tai-dien-nang-di-xa\/#Bai_tap_ve_truyen_tai_dien_nang_di_xa_ly_9_bai_36\" >B\u00e0i t\u1eadp v\u1ec1 truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng \u0111i xa l\u00fd 9 b\u00e0i 36<\/a><\/li><\/ul><\/nav><\/div>\n<\/p>\n<p dir=\"ltr\">C\u00e1c ki\u1ebfn th\u1ee9c trong b\u00e0i truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng \u0111i xa \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng r\u1ea5t nhi\u1ec1u trong \u0111\u1eddi s\u1ed1ng th\u1ee9c t\u1ebf. B\u00ean c\u1ea1nh \u0111\u00f3, \u0111\u00e2y c\u0169ng l\u00e0 b\u00e0i t\u1eadp tr\u1ecdng t\u00e2m trong ph\u1ea7n luy\u1ec7n t\u1eadp \u00f4n thi h\u1ecdc sinh gi\u1ecfi V\u1eadt L\u00fd 9. B\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y s\u1ebd \u0111\u1ec1 c\u1eadp \u0111\u1ebfn c\u00e1c n\u1ed9i dung c\u1ea7n thi\u1ebft nh\u1ea5t, gi\u00fap c\u00e1c em t\u1ef1 r\u00e8n luy\u1ec7n v\u00e0 n\u00e2ng cao k\u1ef9 n\u0103ng t\u01b0 duy.<\/p>\n<p>                                                                    <img decoding=\"async\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img_default\/monkey3.png\" alt=\"\"><\/p>\n<p class=\"title\">H\u00e0ng tri\u1ec7u tr\u1ebb em \u0111\u00e3 ph\u00e1t tri\u1ec3n kh\u1ea3 n\u0103ng ng\u00f4n ng\u1eef c\u1ee7a m\u00ecnh th\u00f4ng qua c\u00e1c \u1ee9ng d\u1ee5ng h\u1ecdc t\u1eadp c\u1ee7a Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef<\/p>\n<p class=\"description\">\u0110\u0103ng k\u00fd ngay \u0111\u1ec3 \u0111\u01b0\u1ee3c Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef t\u01b0 v\u1ea5n mi\u1ec5n ph\u00ed v\u1ec1 s\u1ea3n ph\u1ea9m v\u00e0 l\u1ed9 tr\u00ecnh h\u1ecdc cho con.<\/p>\n<p>                                                                            *Vui l\u00f2ng ki\u1ec3m tra l\u1ea1i h\u1ecd t\u00ean<\/p>\n<p>                                                                            *Vui l\u00f2ng ki\u1ec3m tra l\u1ea1i S\u0110T<\/p>\n<p>                                                                                Th\u00e0nh th\u1ea1o 2.000+ t\u1eeb &amp; 6.000 c\u00e2u ti\u1ebfng anh<br \/>\n                                                                                Ph\u00e1t tri\u1ec3n to\u00e0n di\u1ec7n 4 k\u1ef9 n\u0103ng ti\u1ebfng anh<br \/>\n                                                                                Gi\u1ecfi To\u00e1n &#8211; ti\u1ebfng Anh theo ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7n \u0111\u1ea1i<br \/>\n                                                                                Ph\u00e1t tri\u1ec3n EQ &amp; kh\u1ea3 n\u0103ng ti\u1ebfng Vi\u1ec7t<\/p>\n<p>                                                                                *B\u1ea1n ch\u01b0a ch\u1ecdn m\u1ee5c n\u00e0o!<\/p>\n<p>                                                                    \u0110\u0103ng K\u00fd T\u01b0 V\u1ea5n Mi\u1ec5n Ph\u00ed<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tai_sao_phai_truyen_tai_dien_nang_di_xa\"><\/span>T\u1ea1i sao ph\u1ea3i truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng \u0111i xa?\u00a0<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Nhu c\u1ea7u s\u1eed d\u1ee5ng \u0111i\u1ec7n c\u1ee7a c\u00e1c h\u1ed9 gia \u0111\u00ecnh hi\u1ec7n nay ng\u00e0y c\u00e0ng t\u0103ng cao. M\u1ecdi ho\u1ea1t \u0111\u1ed9ng sinh ho\u1ea1t h\u1eb1ng ng\u00e0y ph\u1ea7n l\u1edbn \u0111\u1ec1u c\u1ea7n d\u00f9ng \u0111\u1ebfn \u0111i\u1ec7n.\u00a0<\/p>\n<p dir=\"ltr\">Tuy nhi\u00ean, v\u00ec t\u00ednh ch\u1ea5t c\u1ee7a \u0111i\u1ec7n v\u00e0 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ef1 an to\u00e0n cho m\u1ecdi ng\u01b0\u1eddi, m\u00e1y ph\u00e1t \u0111i\u1ec7n kh\u00f4ng th\u1ec3 \u0111\u1ec3 g\u1ea7n c\u00e1c h\u1ed9 gia \u0111\u00ecnh.\u00a0 Do \u0111\u00f3, \u0111\u1ec3 truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng \u0111i xa \u0111\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u s\u1eed d\u1ee5ng c\u1ee7a m\u1ecdi nh\u00e0. C\u0169ng nh\u01b0 khi truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng \u0111i xa, \u0111\u1ec3 gi\u1ea3m hao ph\u00ed \u0111i\u1ec7n n\u0103ng t\u1ed1t h\u01a1n<\/p>\n<p dir=\"ltr\">\u0110\u1ed3ng th\u1eddi khi c\u1ea7n ph\u1ea3i truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng \u0111i xa s\u1ebd b\u1eb1ng c\u00e1c \u0111\u01b0\u1eddng d\u00e2y truy\u1ec1n t\u1ea3i \u0111i\u1ec7n.\u00a0Ng\u01b0\u1eddi ta kh\u00f4ng s\u1eed d\u1ee5ng d\u00f2ng \u0111i\u1ec7n 1 chi\u1ec1u m\u00e0 s\u1ebd s\u1eed d\u1ee5ng d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u cho c\u00e1c m\u00e1y bi\u1ebfn th\u1ebf. Nguy\u00ean nh\u00e2n v\u00ec quy tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00e1y bi\u1ebfn th\u1ebf d\u1ef1a tr\u00ean hi\u1ec7n t\u01b0\u1ee3ng c\u1ea3m \u1ee9ng \u0111i\u1ec7n t\u1eeb. \u0110i\u1ec1u n\u00e0y cho th\u1ea5y mu\u1ed1n c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng c\u1ea3m \u1ee9ng \u0111i\u1ec7n t\u1eeb th\u00ec t\u1eeb th\u00f4ng qua cu\u1ed9n d\u00e2y ph\u1ea3i bi\u1ebfn thi\u00ean. V\u00ec v\u1eady, ch\u1ec9 c\u00f3 d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u m\u1edbi l\u00e0m cho t\u1eeb th\u00f4ng bi\u1ebfn thi\u00ean.<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/truyen-tai-dien-nang-di-xa-2.jpg\" alt=\"M\u00f4 ph\u1ecfng qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng t\u1eeb c\u00e1c nh\u00e0 m\u00e1y \u0111i\u1ec7n \u0111\u1ebfn c\u00e1c h\u1ed9 gia \u0111\u00ecnh. (\u1ea2nh: S\u01b0u t\u1ea7m Internet)\" width=\"800\" height=\"300\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Su_hao_phi_dien_nang_tren_duong_day_truyen_tai_dien\"><\/span>S\u1ef1 hao ph\u00ed \u0111i\u1ec7n n\u0103ng tr\u00ean \u0111\u01b0\u1eddng d\u00e2y truy\u1ec1n t\u1ea3i \u0111i\u1ec7n\u00a0<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng \u0111i xa b\u1eb1ng d\u00e2y d\u1eabn, c\u00f3 m\u1ed9t ph\u1ea7n \u0111i\u1ec7n n\u0103ng b\u1ecb hao ph\u00ed. Nguy\u00ean nh\u00e2n l\u00e0 v\u00ec xu\u1ea5t hi\u1ec7n hi\u1ec7n t\u01b0\u1ee3ng t\u1ecfa nhi\u1ec7t tr\u00ean \u0111\u01b0\u1eddng d\u00e2y.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tinh_dien_nang_hao_phi_tren_duong_day_truyen_tai_dien\"><\/span>T\u00ednh \u0111i\u1ec7n n\u0103ng hao ph\u00ed tr\u00ean \u0111\u01b0\u1eddng d\u00e2y truy\u1ec1n t\u1ea3i \u0111i\u1ec7n\u00a0<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\" role=\"presentation\">C\u00f4ng th\u1ee9c truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng \u0111i:<\/p>\n<table style=\"border-collapse: collapse;width: 100.019%\" border=\"1\">\n<tr>\n<td style=\"width: 98.9117%;text-align: center;border: 0.5px solid #4e4c50\">\n<p>P = U.I<\/p>\n<\/td>\n<\/tr>\n<\/table>\n<p dir=\"ltr\" role=\"presentation\">C\u00f4ng th\u1ee9c t\u00ednh c\u00f4ng su\u1ea5t \u0111i\u1ec7n hao ph\u00ed tr\u00ean \u0111\u01b0\u1eddng d\u00e2y d\u1eabn:\u00a0<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/truyen-tai-dien-nang-di-xa-cong-thuc.JPG\" alt=\"\" width=\"690\" height=\"110\"><\/p>\n<p dir=\"ltr\">Trong \u0111\u00f3:\u00a0<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">P: l\u00e0 c\u00f4ng su\u1ea5t \u0111i\u1ec7n c\u1ea7n truy\u1ec1n \u0111i.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">U: l\u00e0 hi\u1ec7u \u0111i\u1ec7n th\u1ebf hai \u0111\u1ea7u \u0111\u01b0\u1eddng d\u00e2y truy\u1ec1n t\u1ea3i \u0111i\u1ec7n.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">I: l\u00e0 c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n c\u1ee7a \u0111\u01b0\u1eddng d\u00e2y t\u1ea3i \u0111i\u1ec7n.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">R: l\u00e0 \u0111i\u1ec7n tr\u1edf c\u1ee7a \u0111\u01b0\u1eddng d\u00e2y t\u1ea3i \u0111i\u1ec7n.<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">L\u01b0u \u00fd: T\u1eeb c\u00f4ng th\u1ee9c t\u00ednh c\u00f4ng su\u1ea5t hao ph\u00ed, r\u00fat ra \u0111\u01b0\u1ee3c k\u1ebft lu\u1eadn c\u00f4ng su\u1ea5t hao ph\u00ed do t\u1ecfa nhi\u1ec7t tr\u00ean \u0111\u01b0\u1eddng d\u00e2y d\u1eabn \u0111i\u1ec7n t\u1ec9 l\u1ec7 ngh\u1ecbch v\u1edbi b\u00ecnh ph\u01b0\u01a1ng hi\u1ec7u \u0111i\u1ec7n th\u1ebf c\u1ee7a hai \u0111\u1ea7u \u0111\u01b0\u1eddng d\u00e2y d\u1eabn \u0111i\u1ec7n.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cach_lam_giam_hao_phi\"><\/span>C\u00e1ch l\u00e0m gi\u1ea3m hao ph\u00ed\u00a0<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">C\u00e1ch \u0111\u1ec3 gi\u1ea3m hao ph\u00ed tr\u00ean \u0111\u01b0\u1eddng d\u00e2y t\u1ea3i \u0111i\u1ec7n l\u00e0 t\u0103ng hi\u1ec7u \u0111i\u1ec7n th\u1ebf hai \u0111\u1ea7u d\u00e2y d\u1eabn.\u00a0\u0110\u00e2y \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 l\u00e0 c\u00e1ch t\u1ed1i \u01b0u v\u00e0 hi\u1ec7u qu\u1ea3 nh\u1ea5t, \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng nhi\u1ec1u trong th\u1ef1c t\u1ebf.\u00a0<\/p>\n<p dir=\"ltr\">L\u01b0u \u00fd: M\u00e1y bi\u1ebfn th\u1ebf t\u1ef1 ng\u1eabu ch\u1ec9 g\u1ed3m m\u1ed9t cu\u1ed9n d\u00e2y d\u1eabn c\u00f3 nhi\u1ec1u \u0111\u1ea7u ra. D\u1ef1a v\u00e0o ngu\u1ed3n \u0111i\u1ec7n v\u00e0 t\u1ea3i ti\u00eau th\u1ee5 \u0111\u01b0\u1ee3c n\u1ed1i v\u1edbi \u0111\u1ea7u n\u00e0o c\u1ee7a cu\u1ed9n d\u00e2y d\u1eabn m\u00e0 m\u00e1y s\u1ebd th\u1ef1c hi\u1ec7n ch\u1ee9c n\u0103ng h\u1ea1 th\u1ebf ho\u1eb7c t\u0103ng th\u1ebf.\u00a0N\u1ebfu t\u1ea3i n\u1ed1i v\u00e0o \u0111\u1ea7u A, C v\u00e0 ngu\u1ed3n \u0111i\u1ec7n n\u1ed1i v\u00e0o A, B th\u00ec m\u00e1y s\u1ebd h\u1ea1 th\u1ebf v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. (Xem h\u00ecnh minh h\u1ecda b\u00ean d\u01b0\u1edbi)<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/truyen-tai-dien-nang-di-xa-1.jpg\" alt=\"\" width=\"300\" height=\"367\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Vai_tro_cua_may_bien_the_trong_truyen_tai_dien_nang_di_xa\"><\/span>Vai tr\u00f2 c\u1ee7a m\u00e1y bi\u1ebfn th\u1ebf trong truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng \u0111i xa<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/truyen-tai-dien-nang-di-xa-3_(1).jpg\" alt=\"M\u00e1y bi\u1ebfn th\u1ebf (M\u00e1y bi\u1ebfn \u00e1p). (\u1ea2nh: S\u01b0u t\u1ea7m Internet)\" width=\"800\" height=\"598\"><\/p>\n<p dir=\"ltr\">M\u00e1y bi\u1ebfn th\u1ebf hay c\u00f2n g\u1ecdi l\u00e0 m\u00e1y bi\u1ebfn \u00e1p, l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eeb t\u0129nh, ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean nguy\u00ean l\u00fd c\u1ea3m \u1ee9ng \u0111i\u1ec7n t\u1eeb.\u00a0M\u00e1y c\u00f3 kh\u1ea3 n\u0103ng bi\u1ebfn \u0111\u1ed5i m\u1ed9t h\u1ec7 th\u1ed1ng d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u \u1edf \u0111i\u1ec7n \u00e1p n\u00e0y th\u00e0nh m\u1ed9t h\u1ec7 th\u1ed1ng d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u \u1edf \u0111i\u1ec7n \u00e1p kh\u00e1c v\u1edbi c\u00f9ng m\u1ed9t t\u1ea7n s\u1ed1.\u00a0<\/p>\n<p dir=\"ltr\">V\u1eady m\u00e1y bi\u1ebfn \u00e1p c\u00f3 vai tr\u00f2 g\u00ec trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng \u0111i xa? N\u1ebfu m\u00e1y x\u1ea3y ra b\u1ea5t k\u1ef3 tr\u1ee5c tr\u1eb7c n\u00e0o, r\u1ea5t d\u1ec5 d\u1eabn \u0111\u1ebfn t\u00ecnh tr\u1ea1ng hao h\u1ee5t \u0111i\u1ec7n n\u0103ng v\u00e0 g\u00e2y kh\u00f3 kh\u0103n trong vi\u1ec7c truy\u1ec1n t\u1ea3i \u0111i\u1ec7n \u0111\u1ebfn c\u00e1c h\u1ed9 gia \u0111\u00ecnh. N\u00f3i m\u1ed9t c\u00e1ch d\u1ec5 hi\u1ec3u h\u01a1n, m\u00e1y bi\u1ebfn th\u1ebf l\u00e0 thi\u1ebft b\u1ecb \u0111i\u1ec7n s\u1eed d\u1ee5ng nguy\u00ean l\u00fd c\u1ea3m \u1ee9ng \u0111i\u1ec7n t\u1eeb nh\u1eb1m m\u1ee5c \u0111\u00edch truy\u1ec1n t\u1ea3i, \u0111\u01b0a n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n ho\u1eb7c c\u00e1c t\u00edn hi\u1ec7u \u0111i\u1ec7n xoay chi\u1ec1u gi\u1eefa c\u00e1c m\u1ea1ch \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng theo m\u1ed9t nguy\u00ean l\u00ed nh\u1ea5t \u0111\u1ecbnh.<\/p>\n<p dir=\"ltr\">M\u00e1y bi\u1ebfn \u00e1p bao g\u1ed3m c\u00e1c b\u1ed9 ph\u1eadn ch\u00ednh sau \u0111\u00e2y:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">L\u00f5i th\u00e9p MBA: d\u00f9ng \u0111\u1ec3 d\u1eabn t\u1eeb th\u00f4ng, th\u01b0\u1eddng s\u1eed d\u1ee5ng c\u00e1c v\u1eadt li\u1ec7u d\u1eabn t\u1eeb t\u1ed1t \u0111\u1ec3 ch\u1ebf t\u1ea1o.\u00a0<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">D\u00e2y qu\u1ea5n MBA: th\u01b0\u1eddng c\u00f3 c\u1ea5u t\u1ea1o t\u1eeb nh\u00f4m ho\u1eb7c \u0111\u1ed3ng, c\u00f3 kh\u1ea3 n\u0103ng nh\u1eadn n\u0103ng l\u01b0\u1ee3ng v\u00e0o \u0111\u1ec3 truy\u1ec1n n\u0103ng l\u01b0\u1ee3ng ra.\u00a0<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">V\u1ecf MBA: bao g\u1ed3m n\u1eafp th\u00f9ng v\u00e0 th\u00f9ng.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Th\u00f9ng MBA: th\u00f9ng \u0111\u1ef1ng l\u00f5i th\u00e9p, d\u1ea7u MBA v\u00e0 d\u00e2y qu\u1ea5n, th\u1ef1c hi\u1ec7n nhi\u1ec7m v\u1ee5 t\u0103ng kh\u1ea3 n\u0103ng c\u00e1ch \u0111i\u1ec7n v\u00e0 t\u1ecfa b\u1edbt nhi\u1ec7t ra m\u00f4i tr\u01b0\u1eddng.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">N\u1eafp th\u00f9ng MBA: c\u00f3 nhi\u1ec7m v\u1ee5 ch\u00ednh l\u00e0 c\u00e1ch \u0111i\u1ec7n.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u1ed0ng b\u1ea3o hi\u1ec3m: th\u01b0\u1eddng c\u00f3 c\u1ea5u t\u1ea1o b\u1eb1ng th\u00e9p, gi\u1eef cho MBA kh\u00f4ng b\u1ecb h\u1ecfng do hi\u1ec7n t\u01b0\u1ee3ng tr\u00e0n d\u1ea7u.<\/p>\n<\/li>\n<\/ul>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Bai_tap_ve_truyen_tai_dien_nang_di_xa_ly_9_bai_36\"><\/span>B\u00e0i t\u1eadp v\u1ec1 truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng \u0111i xa l\u00fd 9 b\u00e0i 36<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c b\u00e0i t\u1eadp v\u1ec1 truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng \u0111i xa, gi\u00fap c\u00e1c em hi\u1ec3u r\u00f5 l\u00fd thuy\u1ebft v\u00e0 v\u1eadn d\u1ee5ng c\u00e1c ki\u1ebfn th\u1ee9c \u0111\u01b0\u1ee3c h\u1ecdc v\u00e0o gi\u1ea3i c\u00e1c b\u00e0i t\u1eadp t\u00ednh to\u00e1n c\u0169ng nh\u01b0 l\u00fd gi\u1ea3i \u0111\u01b0\u1ee3c c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng trong th\u1ef1c t\u1ebf.<\/p>\n<p dir=\"ltr\">C\u00e2u 1: \u0110\u1ec3 truy\u1ec1n \u0111i c\u00f9ng m\u1ed9t c\u00f4ng su\u1ea5t \u0111i\u1ec7n, n\u1ebfu \u0111\u01b0\u1eddng d\u00e2y t\u1ea3i \u0111i\u1ec7n \u0111\u01b0\u1ee3c r\u00fat ng\u1eafn \u0111i 4 l\u1ea7n th\u00ec c\u00f4ng su\u1ea5t hao ph\u00ed v\u00ec t\u1ecfa nhi\u1ec7t s\u1ebd:<\/p>\n<p dir=\"ltr\">A. Gi\u1ea3m 2 l\u1ea7n<\/p>\n<p dir=\"ltr\">B. T\u0103ng 2 l\u1ea7n<\/p>\n<p dir=\"ltr\">C. Gi\u1ea3m 4 l\u1ea7n<\/p>\n<p dir=\"ltr\">D. T\u0103ng 4 l\u1ea7n<\/p>\n<p dir=\"ltr\">L\u1eddi gi\u1ea3i: \u0110\u00e1p \u00e1n C<\/p>\n<p dir=\"ltr\">Gi\u1ea3i th\u00edch: Khi \u0111\u01b0\u1eddng d\u00e2y truy\u1ec1n t\u1ea3i \u0111\u01b0\u1ee3c r\u00fat ng\u1eafn \u0111i 4 l\u1ea7n th\u00ec \u0111i\u1ec7n tr\u1edf d\u00e2y d\u1eabn c\u0169ng gi\u1ea3m \u0111i 4 l\u1ea7n, do \u0111\u00f3 hao ph\u00ed t\u1ecfa nhi\u1ec7t tr\u00ean \u0111\u01b0\u1eddng d\u00e2y truy\u1ec1n t\u1ea3i c\u0169ng gi\u1ea3m \u0111i 4 l\u1ea7n.<\/p>\n<p dir=\"ltr\">C\u00e2u 2: Khi truy\u1ec1n \u0111i c\u00f9ng m\u1ed9t c\u00f4ng su\u1ea5t \u0111i\u1ec7n \u0111i xa, mu\u1ed1n l\u00e0m gi\u1ea3m c\u00f4ng su\u1ea5t hao ph\u00ed v\u00ec t\u1ecfa nhi\u1ec7t, ng\u01b0\u1eddi ta th\u01b0\u1eddng d\u00f9ng c\u00e1ch n\u00e0o trong c\u00e1c c\u00e1ch sau \u0111\u00e2y?<\/p>\n<p dir=\"ltr\">A. Gi\u1ea3m \u0111i\u1ec7n tr\u1edf c\u1ee7a \u0111\u01b0\u1eddng d\u00e2y<\/p>\n<p dir=\"ltr\">B. Gi\u1ea3m hi\u1ec7u \u0111i\u1ec7n th\u1ebf truy\u1ec1n t\u1ea3i<\/p>\n<p dir=\"ltr\">C. T\u0103ng hi\u1ec7u \u0111i\u1ec7n th\u1ebf truy\u1ec1n t\u1ea3i<\/p>\n<p dir=\"ltr\">D. T\u0103ng \u0111i\u1ec7n tr\u1edf c\u1ee7a \u0111\u01b0\u1eddng d\u00e2y<\/p>\n<p dir=\"ltr\">L\u1eddi gi\u1ea3i: \u0110\u00e1p \u00e1n C<\/p>\n<p dir=\"ltr\">Gi\u1ea3i th\u00edch: Ng\u01b0\u1eddi ta th\u01b0\u1eddng t\u0103ng hi\u1ec7u \u0111i\u1ec7n th\u1ebf \u0111\u1eb7t v\u00e0o hai \u0111\u1ea7u d\u00e2y d\u1eabn \u0111\u1ec3 gi\u1ea3m hao ph\u00ed do t\u1ecfa nhi\u1ec7t khi truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng \u0111i xa. \u0110\u00e2y c\u0169ng \u0111\u01b0\u1ee3c xem l\u00e0 c\u00e1ch hi\u1ec7u qu\u1ea3 v\u00e0 t\u1ed1i \u01b0u nh\u1ea5t.<\/p>\n<p dir=\"ltr\">C\u00e2u 3: Ng\u01b0\u1eddi ta c\u1ea7n truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng t\u1eeb nh\u00e0 m\u00e1y \u0111i\u1ec7n \u0111\u1ebfn khu d\u00e2n c\u01b0. Ban \u0111\u1ea7u c\u00f4ng su\u1ea5t \u0111i\u1ec7n l\u00e0 100kW, nh\u01b0ng sau \u0111\u00f3 do nhu c\u1ea7u c\u1ea7n s\u1eed d\u1ee5ng n\u00ean c\u00f4ng su\u1ea5t \u0111i\u1ec7n truy\u1ec1n \u0111i t\u0103ng l\u00ean th\u00e0nh 200kW. Hao ph\u00ed do trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i thay \u0111\u1ed5i nh\u01b0 th\u1ebf n\u00e0o?<\/p>\n<p dir=\"ltr\">A. T\u0103ng l\u00ean 2 l\u1ea7n<\/p>\n<p dir=\"ltr\">B. T\u0103ng l\u00ean 4 l\u1ea7n<\/p>\n<p dir=\"ltr\">C. Gi\u1ea3m \u0111i 2 l\u1ea7n<\/p>\n<p dir=\"ltr\">D. Gi\u1ea3m \u0111i 4 l\u1ea7n<\/p>\n<p dir=\"ltr\">L\u1eddi gi\u1ea3i: \u0110\u00e1p \u00e1n B<\/p>\n<p dir=\"ltr\">Gi\u1ea3i th\u00edch: D\u1ef1a v\u00e0o c\u00f4ng th\u1ee9c t\u00ednh c\u00f4ng su\u1ea5t hao ph\u00ed P(hp) = R.P^2\/U^2. Ta th\u1ea5y khi c\u00f4ng su\u1ea5t truy\u1ec1n t\u1ea3i t\u0103ng l\u00ean 2 l\u1ea7n th\u00ec hao ph\u00ed truy\u1ec1n t\u1ea3i t\u0103ng l\u00ean 4 l\u1ea7n<\/p>\n<p dir=\"ltr\">C\u00e2u 4: \u0110\u1ec3 truy\u1ec1n \u0111i c\u00f9ng m\u1ed9t c\u00f4ng su\u1ea5t \u0111i\u1ec7n, n\u1ebfu \u0111\u01b0\u1eddng d\u00e2y t\u1ea3i \u0111i\u1ec7n t\u0103ng l\u00ean hai l\u1ea7n, c\u00f4ng su\u1ea5t \u0111i\u1ec7n t\u0103ng l\u00ean 2 l\u1ea7n th\u00ec c\u00f4ng su\u1ea5t hao ph\u00ed v\u00ec t\u1ecfa nhi\u1ec7t s\u1ebd:<\/p>\n<p dir=\"ltr\">A. T\u0103ng l\u00ean 2 l\u1ea7n<\/p>\n<p dir=\"ltr\">B. T\u0103ng l\u00ean 4 l\u1ea7n<\/p>\n<p dir=\"ltr\">C. T\u0103ng l\u00ean 8 l\u1ea7n<\/p>\n<p dir=\"ltr\">D. T\u0103ng l\u00ean 16 l\u1ea7n<\/p>\n<p dir=\"ltr\">L\u1eddi gi\u1ea3i: \u0110\u00e1p \u00e1n C<\/p>\n<p dir=\"ltr\">Gi\u1ea3i th\u00edch: D\u1ef1a v\u00e0o c\u00f4ng th\u1ee9c t\u00ednh c\u00f4ng su\u1ea5t hao ph\u00ed\u00a0 P(hp) = R.P^2\/U^2, ta th\u1ea5y khi c\u00f4ng su\u1ea5t truy\u1ec1n t\u1ea3i t\u0103ng l\u00ean 2, \u0111i\u1ec7n tr\u1edf d\u00e2y d\u1eabn t\u0103ng l\u00ean 2 l\u1ea7n l\u1ea7n th\u00ec hao ph\u00ed truy\u1ec1n t\u1ea3i t\u0103ng l\u00ean 8 l\u1ea7n.<\/p>\n<p dir=\"ltr\">C\u00e2u 5: Khi truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng t\u1eeb nh\u00e0 m\u00e1y \u0111i\u1ec7n \u0111\u1ebfn n\u01a1i ti\u00eau th\u1ee5 ng\u01b0\u1eddi ta t\u00ednh \u0111\u01b0\u1ee3c c\u00f4ng su\u1ea5t hao ph\u00ed do truy\u1ec1n t\u1ea3i l\u00e0 10kW. Nh\u01b0ng do nhu c\u1ea7u thay \u0111\u1ed5i n\u00ean ng\u01b0\u1eddi ta ph\u1ea3i n\u0103ng c\u00f4ng su\u1ea5t d\u00f2ng \u0111i\u1ec7n l\u00ean 2 l\u1ea7n. Mu\u1ed1n cho hao ph\u00ed do truy\u1ec1n t\u1ea3i v\u1eabn l\u00e0 10kW th\u00ec ng\u01b0\u1eddi ta ph\u1ea3i<\/p>\n<p dir=\"ltr\">A. t\u0103ng ti\u1ebft di\u1ec7n d\u00e2y d\u1eabn l\u00ean 2 l\u1ea7n<\/p>\n<p dir=\"ltr\">B. gi\u1ea3m ti\u1ebft di\u1ec7n d\u00e2y d\u1eabn \u0111i 2 l\u1ea7n<\/p>\n<p dir=\"ltr\">C. t\u0103ng hi\u1ec7u \u0111i\u1ec7n th\u1ebf truy\u1ec1n t\u1ea3i l\u00ean 1,41 l\u1ea7n<\/p>\n<p dir=\"ltr\">D. t\u0103ng hi\u1ec7u \u0111i\u1ec7n th\u1ebf truy\u1ec1n t\u1ea3i l\u00ean 2 l\u1ea7n<\/p>\n<p dir=\"ltr\">L\u1eddi gi\u1ea3i: \u0110\u00e1p \u00e1n D<\/p>\n<p dir=\"ltr\">Gi\u1ea3i th\u00edch: D\u1ef1a v\u00e0o c\u00f4ng th\u1ee9c t\u00ednh c\u00f4ng su\u1ea5t hao ph\u00ed \u0111i\u1ec7n n\u0103ng\u00a0 P(hp) = R.P^2\/U^2, khi c\u00f4ng su\u1ea5t P t\u0103ng l\u00ean 2 l\u1ea7n v\u00e0 hi\u1ec7u \u0111i\u1ec7n th\u1ebf truy\u1ec1n t\u1ea3i U t\u0103ng l\u00ean 2 l\u1ea7n th\u00ec c\u00f4ng su\u1ea5t hao ph\u00ed kh\u00f4ng thay \u0111\u1ed5i.<\/p>\n<p dir=\"ltr\">C\u00e2u 6 : D\u1ef1a v\u00e0o c\u00f4ng th\u1ee9c t\u00ednh c\u00f4ng su\u1ea5t hao ph\u00ed do t\u1ecfa nhi\u1ec7t trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng, em h\u00e3y n\u00eau 2 bi\u1ec7n ph\u00e1p c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng \u0111\u1ec3 gi\u1ea3m c\u00f4ng su\u1ea5t hao ph\u00ed khi truy\u1ec1n t\u1ea3i m\u1ed9t c\u00f4ng su\u1ea5t \u0111i\u1ec7n x\u00e1c \u0111\u1ecbnh?<\/p>\n<p dir=\"ltr\">L\u1eddi gi\u1ea3i:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Bi\u1ec7n ph\u00e1p th\u1ee9 nh\u1ea5t: T\u0103ng hi\u1ec7u \u0111i\u1ec7n th\u1ebf truy\u1ec1n t\u1ea3i. \u0110\u00e2y l\u00e0 c\u00e1ch l\u00e0m t\u1ed1i \u01b0u v\u00e0 hi\u1ec7u qu\u1ea3 nh\u1ea5t<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Bi\u1ec7n ph\u00e1p th\u1ee9 hai: gi\u1ea3m \u0111i\u1ec7n tr\u1edf d\u00e2y d\u1eabn (gi\u1ea3m chi\u1ec1u d\u00e0i, t\u0103ng ti\u1ebft di\u1ec7n d\u00e2y d\u1eabn, d\u00f9ng v\u1eadt li\u1ec7u d\u1eabn \u0111i\u1ec7n t\u1ed1t)<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">C\u00e2u 7: \u0110\u01b0\u1eddng d\u00e2y t\u1ea3i \u0111i\u1ec7n t\u1eeb nh\u00e0 m\u00e1y th\u1ee7y \u0111i\u1ec7n \u0111\u1ebfn n\u01a1i ti\u00eau th\u1ee5 d\u00e0i 120km. D\u00e2y d\u1eabn \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng \u0111\u1ed3ng, c\u1ee9 1km c\u00f3 R = 0,4\u2126. Ng\u01b0\u1eddi ta \u0111o \u0111\u01b0\u1ee3c c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n tr\u00ean d\u00e2y d\u1eabn l\u00e0 200A. T\u00ednh c\u00f4ng su\u1ea5t hao ph\u00ed tr\u00ean \u0111\u01b0\u1eddng d\u00e2y?<\/p>\n<p dir=\"ltr\">L\u1eddi gi\u1ea3i:<\/p>\n<p dir=\"ltr\">\u0110i\u1ec7n tr\u1edf d\u00e2y d\u1eabn l\u00e0: R = 120.0,4 = 48 (\u2126)<\/p>\n<p dir=\"ltr\">C\u00f4ng su\u1ea5t hao ph\u00ed tr\u00ean \u0111\u01b0\u1eddng d\u00e2y l\u00e0:<\/p>\n<p dir=\"ltr\">P(hp) = R.I^2 = 48.2002 = 1920000 (W)<\/p>\n<p dir=\"ltr\">C\u00e2u 8 : Ng\u01b0\u1eddi ta c\u1ea7n truy\u1ec1n m\u1ed9t c\u00f4ng su\u1ea5t \u0111i\u1ec7n 100kW d\u01b0\u1edbi m\u1ed9t hi\u1ec7u \u0111i\u1ec7n th\u1ebf hi\u1ec7u d\u1ee5ng 5kV \u0111i xa. Trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i ng\u01b0\u1eddi ta \u0111o \u0111\u01b0\u1ee3c c\u00f4ng su\u1ea5t hao ph\u00ed tr\u00ean \u0111\u01b0\u1eddng d\u00e2y l\u00e0 10kW. \u0110i\u1ec7n tr\u1edf c\u1ee7a d\u00e2y d\u1eabn l\u00e0 bao nhi\u00eau?<\/p>\n<p dir=\"ltr\">L\u1eddi gi\u1ea3i:<\/p>\n<p dir=\"ltr\">\u0110\u1ed5i 100kW = 100000W; 10kW = 10000W; 5kV = 5000V<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/bai-tap-truyen-tai-dien-nang-di-xa.JPG\" alt=\"\" width=\"400\" height=\"65\"><\/p>\n<p dir=\"ltr\">V\u1eady \u0111i\u1ec7n tr\u1edf c\u1ee7a d\u00e2y d\u1eabn l\u00e0 25\u2126<\/p>\n<p dir=\"ltr\">C\u00e2u 9: Ng\u01b0\u1eddi ta truy\u1ec1n t\u1ea3i d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u t\u1eeb tr\u1ea1m ph\u00e1t \u0111i\u1ec7n c\u00e1ch n\u01a1i ti\u00eau thu 15km b\u1eb1ng d\u00e2y d\u1eabn kim lo\u1ea1i c\u00f3 \u0111i\u00ean tr\u1edf su\u1ea5t p = 4.10-7 \u2126m, ti\u1ebft di\u1ec7n 0,5cm2. \u0110i\u1ec7n \u00e1p v\u00e0 c\u00f4ng su\u1ea5t \u1edf tr\u1ea1m l\u00e0 10kV v\u00e0 600kW. T\u00ednh c\u00f4ng su\u1ea5t t\u1ecfa nhi\u1ec7t tr\u00ean \u0111\u01b0\u1eddng d\u00e2y trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng.<\/p>\n<p dir=\"ltr\">L\u1eddi gi\u1ea3i:<\/p>\n<p dir=\"ltr\">\u0110\u1ed5i 15 km = 15000m; 10kV = 10000V; 600kW = 600000W; 0,5cm2 = 0,5.10-4m2<\/p>\n<p dir=\"ltr\">\u0110i\u1ec7n tr\u1edf c\u1ee7a to\u00e0n d\u00e2y d\u1eabn l\u00e0:<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/bai-tap-truyen-tai-dien-nang-di-xa-1.JPG\" alt=\"\" width=\"337\" height=\"85\"><\/p>\n<p dir=\"ltr\">C\u00f4ng su\u1ea5t t\u1ecfa nhi\u1ec7t tr\u00ean \u0111\u01b0\u1eddng d\u00e2y d\u1eabn l\u00e0:<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/bai-tap-truyen-tai-dien-nang-di-xa-2.JPG\" alt=\"\" width=\"421\" height=\"87\"><\/p>\n<p dir=\"ltr\">C\u00e2u 10: Bi\u1ebft c\u00f4ng su\u1ea5t \u0111i\u1ec7n c\u1ee7a nh\u00e0 m\u00e1y l\u00e0 55 kW, kho\u1ea3ng c\u00e1ch t\u1eeb n\u01a1i s\u1ea3n xu\u1ea5t \u0111\u1ebfn n\u01a1i ti\u00eau th\u1ee5 l\u00e0 100 km, d\u00e2y d\u1eabn c\u00f3 \u0111i\u1ec7n tr\u1edf t\u1ed5ng c\u1ed9ng l\u00e0 60\u2126<\/p>\n<p dir=\"ltr\">a) T\u00ednh c\u00f4ng su\u1ea5t hao ph\u00ed v\u00ec t\u1ecfa nhi\u1ec7t tr\u00ean \u0111\u01b0\u1eddng d\u00e2y t\u1ea3i trong hai tr\u01b0\u1eddng h\u1ee3p:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Hi\u1ec7u \u0111i\u1ec7n th\u1ebf hai \u0111\u1ea7u \u0111\u01b0\u1eddng d\u00e2y t\u1ea3i \u0111i\u1ec7n l\u00e0 500V.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Hi\u1ec7u \u0111i\u1ec7n th\u1ebf gi\u1eefa hai \u0111\u1ea7u d\u00e2y t\u1ea3i \u0111i\u1ec7n l\u00e0 50kV<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">b) H\u00e3y nh\u1eadn x\u00e9t k\u1ebft qu\u1ea3 2 tr\u01b0\u1eddng h\u1ee3p tr\u00ean<\/p>\n<p dir=\"ltr\">L\u1eddi gi\u1ea3i:\u00a0<\/p>\n<p dir=\"ltr\">a) C\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n c\u1ee7a d\u00e2y d\u1eabn l\u00e0: I = P\/U = 55000\/500 = 110(A)<\/p>\n<p dir=\"ltr\">C\u00f4ng su\u1ea5t hao ph\u00ed: P(hp) = R.I^2 = 60 . 110^2 = 726000(W)<\/p>\n<p dir=\"ltr\">C\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n tr\u00ean \u0111\u01b0\u1eddng d\u00e2y l\u00e0: I\u2019 = P\/U\u2019 = 1,1(A)<\/p>\n<p dir=\"ltr\">C\u00f4ng su\u1ea5t hao ph\u00ed l\u00e0: P\u2019(hp) = R.I&#8217;^2 = 60.1,1^2 = 72,6 (W)<\/p>\n<p dir=\"ltr\">b) Ta th\u1ea5y: U\u2019\/U = 50000\/500 = 100\u00a0<\/p>\n<p dir=\"ltr\">P\/P\u2019 = 726000\/72,6 = 10000<\/p>\n<p dir=\"ltr\">K\u1ebft lu\u1eadn: Hi\u1ec7u \u0111i\u1ec7n th\u1ebf tr\u01b0\u1edbc l\u00fac truy\u1ec1n \u0111i xa t\u0103ng l\u00ean 100 l\u1ea7n th\u00ec c\u00f4ng su\u1ea5t hao ph\u00ed gi\u1ea3m \u0111i 10000 l\u1ea7n.<\/p>\n<p dir=\"ltr\">C\u00e2u 11: M\u1ed9t trong nh\u1eefng ph\u01b0\u01a1ng \u00e1n gi\u1ea3m hao ph\u00ed \u0111i\u1ec7n n\u0103ng tr\u00ean \u0111\u01b0\u1eddng d\u00e2y t\u1ea3i \u0111i\u1ec7n l\u00e0 gi\u1ea3m \u0111i\u1ec7n tr\u1edf c\u1ee7a d\u00e2y d\u1eabn. C\u00e1ch l\u00e0m n\u00e0y c\u00f3 g\u00ec b\u1ea5t l\u1ee3i?<\/p>\n<p dir=\"ltr\">A. Ph\u1ea3i l\u00e0m d\u00e2y d\u1eabn c\u00f3 ti\u1ebft di\u1ec7n l\u1edbn.<\/p>\n<p dir=\"ltr\">B. T\u1ed1n k\u00e9m r\u1ea5t l\u1edbn l\u01b0\u1ee3ng kim lo\u1ea1i m\u00e0u.<\/p>\n<p dir=\"ltr\">C. Ph\u1ea3i c\u00f3 h\u1ec7 th\u1ed1ng c\u1ed9t \u0111i\u1ec7n l\u1edbn.<\/p>\n<p dir=\"ltr\">D. C\u00e1c ph\u01b0\u01a1ng \u00e1n A, B, C \u0111\u1ec1u l\u00e0 nh\u1eefng b\u1ea5t l\u1ee3i.<\/p>\n<p dir=\"ltr\">\u2192 \u0110\u00e1p \u00e1n D<\/p>\n<p dir=\"ltr\">C\u00e2u 12: Tr\u00ean c\u00f9ng m\u1ed9t \u0111\u01b0\u1eddng d\u00e2y t\u1ea3i \u0111i c\u00f9ng m\u1ed9t c\u00f4ng su\u1ea5t \u0111i\u1ec7n P, khi d\u00f9ng hi\u1ec7u \u0111i\u1ec7n th\u1ebf 500kV th\u00ec c\u00f4ng su\u1ea5t hao ph\u00ed l\u00e0 P1; khi d\u00f9ng hi\u1ec7u \u0111i\u1ec7n th\u1ebf 1000V th\u00ec c\u00f4ng su\u1ea5t hao ph\u00ed l\u00e0 P2. T\u1ec9 s\u1ed1 P2P1 c\u00f3 th\u1ec3 nh\u1eadn k\u1ebft qu\u1ea3 n\u00e0o trong c\u00e1c k\u1ebft qu\u1ea3 sau:<\/p>\n<p dir=\"ltr\">A. 250000.<\/p>\n<p dir=\"ltr\">B. 25000.<\/p>\n<p dir=\"ltr\">C. 2500.<\/p>\n<p dir=\"ltr\">D. 250.<\/p>\n<p dir=\"ltr\">\u2192 \u0110\u00e1p \u00e1n A<\/p>\n<p dir=\"ltr\">C\u00e2u 13: \u0110\u01b0\u1eddng d\u00e2y t\u1ea3i \u0111i\u1ec7n d\u00e0i 100km, truy\u1ec1n \u0111i m\u1ed9t d\u00f2ng \u0111i\u1ec7n 300A. D\u00e2y d\u1eabn b\u1eb1ng \u0111\u1ed3ng c\u1ee9 1km c\u00f3 \u0111i\u1ec7n tr\u1edf 0,2\u03a9. C\u00f4ng su\u1ea5t hao ph\u00ed do t\u1ecfa nhi\u1ec7t tr\u00ean \u0111\u01b0\u01a1ng d\u00e2y c\u00f3 th\u1ec3 l\u00e0 gi\u00e1 tr\u1ecb n\u00e0o sau \u0111\u00e2y?<\/p>\n<p dir=\"ltr\">A. Php= 1800000kW.<\/p>\n<p dir=\"ltr\">B. Php= 1800000W.<\/p>\n<p dir=\"ltr\">C. Php= 1800000J.<\/p>\n<p dir=\"ltr\">D. Php= 180000kW.<\/p>\n<p dir=\"ltr\">\u2192 \u0110\u00e1p \u00e1n B<\/p>\n<p dir=\"ltr\">C\u00e2u 14: \u0110\u1ec3 truy\u1ec1n \u0111i m\u1ed9t c\u00f4ng su\u1ea5t \u0111i\u1ec7n, n\u1ebfu \u0111\u01b0\u1eddng d\u00e2y t\u1ea3i \u0111i\u1ec7n d\u00e0i g\u1ea5p 3 th\u00ec c\u00f4ng su\u1ea5t hao ph\u00ed v\u00ec t\u1ecfa nhi\u1ec7t s\u1ebd<\/p>\n<p dir=\"ltr\">A. T\u0103ng 3 l\u1ea7n.<\/p>\n<p dir=\"ltr\">B. T\u0103ng 9 l\u1ea7n.<\/p>\n<p dir=\"ltr\">C. Gi\u1ea3m 3 l\u1ea7n.<\/p>\n<p dir=\"ltr\">D. Gi\u1ea3m 9 l\u1ea7n.<\/p>\n<p dir=\"ltr\">\u2192 \u0110\u00e1p \u00e1n A<\/p>\n<p dir=\"ltr\">C\u00e2u 15: Vi\u1ec7c x\u00e2y d\u1ef1ng \u0111\u01b0\u1eddng d\u00e2y t\u1ea3i \u0111i\u1ec7n B\u1eafc &#8211; Nam c\u1ee7a n\u01b0\u1edbc ta c\u00f3 hi\u1ec7u \u0111i\u1ec7n th\u1ebf l\u00ean t\u1edbi 500kV nh\u1eb1m m\u1ee5c \u0111\u00edch g\u00ec?<\/p>\n<p dir=\"ltr\">A. \u0110\u01a1n gi\u1ea3n l\u00e0 \u0111\u1ec3 truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng.<\/p>\n<p dir=\"ltr\">B. \u0110\u1ec3 tr\u00e1nh \u00f4 nhi\u1ec5m m\u00f4i tr\u01b0\u1eddng.<\/p>\n<p dir=\"ltr\">C. \u0110\u1ec3 gi\u1ea3m hao ph\u00ed \u0111i\u1ec7n n\u0103ng.<\/p>\n<p dir=\"ltr\">D. \u0110\u1ec3 th\u1ef1c hi\u1ec7n vi\u1ec7c an to\u00e0n \u0111i\u1ec7n.<\/p>\n<p dir=\"ltr\">\u2192 \u0110\u00e1p \u00e1n C<\/p>\n<table style=\"border-collapse: collapse;width: 100%;background-color: #FBEEB8\" border=\"1\">\n<tr>\n<td style=\"width: 98.5189%\">\n<p style=\"text-align: center\">X\u00c2Y D\u1ef0NG N\u1ec0N T\u1ea2NG TO\u00c1N H\u1eccC V\u1eeeNG CH\u1eaeC CHO TR\u1eba T\u1eea NH\u1ece V\u1edaI \u0110A PH\u01af\u01a0NG PH\u00c1P D\u1ea0Y H\u1eccC T\u00cdCH C\u1ef0C, CHI PH\u00cd C\u1ef0C R\u1eba CH\u01afA \u0110\u1ebeN 2K\/NG\u00c0Y C\u00d9NG MONKEY MATH.<\/p>\n<p>\u00a0<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia.monkeyuni.net\/upload\/web\/img\/button_dang-ky-ngay-1.png\" alt=\"\" width=\"185\" height=\"25\"><\/p>\n<\/td>\n<\/tr>\n<\/table>\n<p dir=\"ltr\">\n<p dir=\"ltr\">Ki\u1ebfn th\u1ee9c li\u00ean quan \u0111\u1ebfn b\u00e0i Truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng \u0111i xa \u0111\u00e3 \u0111\u01b0\u1ee3c Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef c\u1eadp nh\u1eadt chi ti\u1ebft v\u00e0 ch\u00ednh x\u00e1c. Hy v\u1ecdng b\u00e0i vi\u1ebft \u0111\u00e3 cung c\u1ea5p nh\u1eefng th\u00f4ng tin b\u1ed5 \u00edch, gi\u00fap c\u00e1c em \u0111\u1ea1t \u0111\u01b0\u1ee3c nhi\u1ec1u k\u1ebft qu\u1ea3 t\u1ed1t trong qu\u00e1 tr\u00ecnh t\u1ef1 h\u1ecdc m\u00f4n V\u1eadt L\u00fd 9.<\/p>\n<p>Ngu\u1ed3n: <a href=\"http:\/\/www.ckconitsha.com\/vn\/\">http:\/\/www.ckconitsha.com\/vn\/<\/a> T\u00e1c gi\u1ea3: <a href=\"https:\/\/www.ckconitsha.com\/vn\/author\/nguyenlandung\">Nguy\u1ec5n L\u00e2n d\u0169ng<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>C\u00e1c ki\u1ebfn th\u1ee9c trong b\u00e0i truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng \u0111i xa \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng r\u1ea5t nhi\u1ec1u trong \u0111\u1eddi s\u1ed1ng th\u1ee9c t\u1ebf. B\u00ean c\u1ea1nh \u0111\u00f3, \u0111\u00e2y c\u0169ng l\u00e0 b\u00e0i t\u1eadp tr\u1ecdng t\u00e2m trong ph\u1ea7n luy\u1ec7n t\u1eadp \u00f4n thi h\u1ecdc sinh gi\u1ecfi V\u1eadt L\u00fd 9. B\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y s\u1ebd \u0111\u1ec1 c\u1eadp \u0111\u1ebfn c\u00e1c n\u1ed9i dung c\u1ea7n&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[100],"tags":[],"class_list":["post-19359","post","type-post","status-publish","format-standard","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/19359","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/comments?post=19359"}],"version-history":[{"count":2,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/19359\/revisions"}],"predecessor-version":[{"id":24456,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/19359\/revisions\/24456"}],"wp:attachment":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/media?parent=19359"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/categories?post=19359"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/tags?post=19359"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}