B\u00e0i 2 (trang 97 SGK V\u1eadt L\u00fd 12):<\/b>\u00a0N\u00eau c\u1ea5u t\u1ea1o v\u00e0 nguy\u00ean t\u1eafc ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111\u1ed9ng c\u01a1 kh\u00f4ng \u0111\u1ed3ng b\u1ed9 ba pha.<\/span><\/p>\nL\u1eddi gi\u1ea3i:<\/b><\/p>\n
C\u1ea5u t\u1ea1o \u0111\u1ed9ng c\u01a1 kh\u00f4ng \u0111\u1ed3ng b\u1ed9 ba pha: g\u1ed3m hai b\u1ed9 ph\u1eadn ch\u00ednh:<\/p>\n
– Roto l\u00e0 khung d\u00e2y d\u1eabn c\u00f3 th\u1ec3 quay d\u01b0\u1edbi t\u00e1c d\u1ee5ng c\u1ee7a t\u1eeb tr\u01b0\u1eddng quay.<\/p>\n
– Stato: l\u00e0 b\u1ed9 ph\u1eadn t\u1ea1o ra t\u1eeb tr\u01b0\u1eddng quay, g\u1ed3m ba cu\u1ed9n d\u00e2y gi\u1ed1ng nhau \u0111\u1eb7t tr\u00ean v\u00f2ng tr\u00f2n l\u1ec7ch nhau nh\u1eefng g\u00f3c 120o<\/sup>.<\/p>\n– Nguy\u00ean t\u1eafc ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111\u1ed9ng c\u01a1 kh\u00f4ng \u0111\u1ed3ng b\u1ed9 ba pha: D\u1ef1a tr\u00ean hi\u1ec7n t\u01b0\u1ee3ng c\u1ea3m \u1ee9ng \u0111i\u1ec7n t\u1eeb v\u00e0 t\u1ea1o ra t\u1eeb tr\u01b0\u1eddng quay b\u1eb1ng c\u00e1ch cho d\u00f2ng \u0111i\u1ec7n ba pha ch\u1ea1y v\u00e0o ba cu\u1ed9n d\u00e2y gi\u1ed1ng nhau \u0111\u1eb7t l\u1ec7ch nhau 120o<\/sup>. D\u00f2ng \u0111i\u1ec7n trong ba cu\u1ed9n d\u00e2y t\u1ea1o ra t\u1eeb tr\u01b0\u1eddng quay.<\/p>\n– Roto \u0111\u1eb7t trong t\u1eeb tr\u01b0\u1eddng quay s\u1ebd quay v\u1edbi t\u1ed1c \u0111\u1ed9 nh\u1ecf h\u01a1n t\u1ed1c \u0111\u1ed9 quay c\u1ee7a t\u1eeb tr\u01b0\u1eddng.<\/p>\n","protected":false},"excerpt":{"rendered":"
B\u00e0i 1 (trang 97 SGK V\u1eadt L\u00fd 12):\u00a0Ph\u00e1t bi\u1ec3u nguy\u00ean t\u1eafc c\u1ee7a \u0111\u1ed9ng c\u01a1 kh\u00f4ng \u0111\u1ed3ng b\u1ed9 L\u1eddi gi\u1ea3i: Nguy\u00ean t\u1eafc ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111\u1ed9ng c\u01a1 kh\u00f4ng \u0111\u1ed3ng b\u1ed9 l\u00e0 d\u1ef1a tr\u00ean hi\u1ec7n t\u01b0\u1ee3ng c\u1ea3m \u1ee9ng \u0111i\u1ec7n t\u1eeb v\u00e0 vi\u1ec7c s\u1eed d\u1ee5ng t\u1eeb tr\u01b0\u1eddng quay. B\u00e0i 2 (trang 97 SGK V\u1eadt L\u00fd 12):\u00a0N\u00eau c\u1ea5u t\u1ea1o […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[1303],"tags":[1428,1427],"yoast_head":"\n
Ch\u01b0\u01a1ng 3 -B\u00e0i 18: \u0110\u1ed9ng c\u01a1 kh\u00f4ng \u0111\u1ed3ng b\u1ed9 ba pha<\/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:\/\/lop12.edu.vn\/chuong-3-bai-18-dong-co-khong-dong-bo-ba-pha\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ch\u01b0\u01a1ng 3 -B\u00e0i 18: \u0110\u1ed9ng c\u01a1 kh\u00f4ng \u0111\u1ed3ng b\u1ed9 ba pha\" \/>\n<meta property=\"og:description\" content=\"B\u00e0i 1 (trang 97 SGK V\u1eadt L\u00fd 12):\u00a0Ph\u00e1t bi\u1ec3u nguy\u00ean t\u1eafc c\u1ee7a \u0111\u1ed9ng c\u01a1 kh\u00f4ng \u0111\u1ed3ng b\u1ed9 L\u1eddi gi\u1ea3i: Nguy\u00ean t\u1eafc ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111\u1ed9ng c\u01a1 kh\u00f4ng \u0111\u1ed3ng b\u1ed9 l\u00e0 d\u1ef1a tr\u00ean hi\u1ec7n t\u01b0\u1ee3ng c\u1ea3m \u1ee9ng \u0111i\u1ec7n t\u1eeb v\u00e0 vi\u1ec7c s\u1eed d\u1ee5ng t\u1eeb tr\u01b0\u1eddng quay. 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B\u00e0i 2 (trang 97 SGK V\u1eadt L\u00fd 12):\u00a0N\u00eau c\u1ea5u t\u1ea1o […]","og_url":"https:\/\/lop12.edu.vn\/chuong-3-bai-18-dong-co-khong-dong-bo-ba-pha\/","og_site_name":"Lop12.edu.vn - C\u1ed9ng \u0111\u1ed3ng h\u1ecdc sinh l\u1edbp 12 l\u1edbn nh\u1ea5t t\u1ea1i Vi\u1ec7t Nam","article_published_time":"2018-03-30T10:01:05+00:00","author":"H\u00e0 Trang","twitter_card":"summary_large_image","twitter_misc":{"Written by":"H\u00e0 Trang","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/lop12.edu.vn\/chuong-3-bai-18-dong-co-khong-dong-bo-ba-pha\/","url":"https:\/\/lop12.edu.vn\/chuong-3-bai-18-dong-co-khong-dong-bo-ba-pha\/","name":"Ch\u01b0\u01a1ng 3 -B\u00e0i 18: \u0110\u1ed9ng c\u01a1 kh\u00f4ng \u0111\u1ed3ng b\u1ed9 ba pha","isPartOf":{"@id":"https:\/\/lop12.edu.vn\/#website"},"datePublished":"2018-03-30T10:01:05+00:00","dateModified":"2018-03-30T10:01:05+00:00","author":{"@id":"https:\/\/lop12.edu.vn\/#\/schema\/person\/2da855e5d06b553ac0065157cc261a45"},"breadcrumb":{"@id":"https:\/\/lop12.edu.vn\/chuong-3-bai-18-dong-co-khong-dong-bo-ba-pha\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/lop12.edu.vn\/chuong-3-bai-18-dong-co-khong-dong-bo-ba-pha\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/lop12.edu.vn\/chuong-3-bai-18-dong-co-khong-dong-bo-ba-pha\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/lop12.edu.vn\/"},{"@type":"ListItem","position":2,"name":"Ch\u01b0\u01a1ng 3 -B\u00e0i 18: \u0110\u1ed9ng c\u01a1 kh\u00f4ng \u0111\u1ed3ng b\u1ed9 ba pha"}]},{"@type":"WebSite","@id":"https:\/\/lop12.edu.vn\/#website","url":"https:\/\/lop12.edu.vn\/","name":"Lop12.edu.vn - C\u1ed9ng \u0111\u1ed3ng h\u1ecdc sinh l\u1edbp 12","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/lop12.edu.vn\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/lop12.edu.vn\/#\/schema\/person\/2da855e5d06b553ac0065157cc261a45","name":"H\u00e0 Trang","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/lop12.edu.vn\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/545a8100db1147f314111301d261dc33?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/545a8100db1147f314111301d261dc33?s=96&d=mm&r=g","caption":"H\u00e0 Trang"},"url":"https:\/\/lop12.edu.vn\/author\/trangvth2\/"}]}},"_links":{"self":[{"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/posts\/24789"}],"collection":[{"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/comments?post=24789"}],"version-history":[{"count":1,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/posts\/24789\/revisions"}],"predecessor-version":[{"id":24790,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/posts\/24789\/revisions\/24790"}],"wp:attachment":[{"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/media?parent=24789"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/categories?post=24789"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/tags?post=24789"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}