\u0110\u1ec1 thi v\u00e0 \u0111\u00e1p \u00e1n \u0111\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n L\u00fd n\u0103m 2016 c\u1ee7a THPT Qu\u1ea3ng X\u01b0\u01a1ng t\u1ec9nh Thanh H\u00f3a t\u1ed5 ch\u1ee9c thi th\u1eed l\u1ea7n 1 v\u00e0o ng\u00e0y 19\/1\/2016.C\u00e1c em tham kh\u1ea3o \u0111\u1ec1 thi v\u00e0 h\u01b0\u1edbng d\u1eabn gi\u1ea3i d\u01b0\u1edbi \u0111\u00e2y:<\/strong><\/h2>\n\nXem th\u00eam: \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n L\u00fd<\/p>\n<\/div>\n
C\u00e2u 8<\/strong>: Dao \u0111\u1ed9ng c\u1ee7a m\u1ed9t v\u1eadt c\u00f3 bi\u00ean \u0111\u1ed9 gi\u1ea3m d\u1ea7n theo th\u1eddi gian g\u1ecdi l\u00e0<\/p>\nA.dao \u0111\u1ed9ng t\u1ef1 do B. dao \u0111\u1ed9ng t\u1eaft d\u1ea7n C. dao \u0111\u1ed9ng c\u01b0\u1ee1ng b\u1ee9c D.dao \u0111\u1ed9ng duy tr\u00ec<\/p>\n
C\u00e2u 9<\/strong>: M\u1ed9t con l\u1eafc \u0111\u01a1n v\u1eadt c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng v\u1eadt n\u1eb7ng m dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a v\u1edbi t\u1ea7n s\u1ed1 f. N\u1ebfu kh\u1ed1i l\u01b0\u1ee3ng v\u1eadt n\u1eb7ng l\u00e0 2m th\u00ec t\u1ea7n s\u1ed1 dao \u0111\u1ed9ng c\u1ee7a v\u1eadt l\u00e0:<\/p>\nA.2f B.4f C.0,5f D. f<\/p>\n
C\u00e2u 10<\/strong>: ch\u1ecdn c\u00e2u sai. B\u01b0\u1edbc s\u00f3ng![](\"http:\/\/latex.codecogs.com\/gif.latex?\\lambda\")
c\u1ee7a s\u00f3ng c\u01a1 h\u1ecdc l\u00e0:<\/p>\nA. Qu\u00e3ng \u0111\u01b0\u1eddng s\u00f3ng truy\u1ec1n \u0111i trong kh\u00f4ng gian 1 chu k\u00ec s\u00f3ng<\/p>\n
B. Kho\u1ea3ng c\u00e1ch ng\u1eafn nh\u1ea5t gi\u1eefa 2 \u0111i\u1ec3m dao \u0111\u1ed9ng c\u00f9ng pha tr\u00ean ph\u01b0\u01a1ng truy\u1ec1n s\u00f3ng<\/p>\n
C. Qu\u00e3ng \u0111\u01b0\u1eddng s\u00f3ng truy\u1ec1n \u0111i trong th\u1eddi gian 1 gi\u00e2y<\/p>\n
D. Hai l\u1ea7n kho\u1ea3ng c\u00e1ch ng\u1eafn nh\u1ea5t gi\u1eefa hai \u0111i\u1ec3m tr\u00ean ph\u01b0\u01a1ng truy\u1ec1n s\u00f3ng dao \u0111\u1ed9ng ng\u01b0\u1ee3c pha.<\/p>\n
C\u00e2u 11<\/strong>: Cho d\u00f2ng \u0111i\u1ec7n ba pha c\u00f3 t\u1ea7n s\u1ed1 g\u00f3c![](\"http:\/\/latex.codecogs.com\/gif.latex?\\omega\")
ch\u1ea1y qua \u0111\u1ed9ng c\u01a1 kh\u00f4ng \u0111\u1ed3ng b\u1ed9 ba pha th\u00ec roto c\u1ee7a \u0111\u1ed9ng c\u01a1 quay v\u1edbi t\u1ed1c \u0111\u1ed9 g\u00f3c<\/p>\nA. B\u1eb1ng B. l\u1edbn h\u01a1n <\/p>\n
C. Nh\u1ecf h\u01a1n D. l\u1edbn h\u01a1n hay nh\u1ecf h\u01a1n c\u00f2n ph\u1ee5 thu\u1ed9c v\u00e0o t\u1ea3i c\u1ee7a \u0111\u1ed9ng c\u01a1.<\/p>\n
C\u00e2u 12<\/strong>: Hai ngu\u1ed3n ph\u00e1t s\u00f3ng k\u1ebft h\u1ee3p A,B tr\u00ean m\u1eb7t ch\u1ea5t l\u1ecfng dao \u0111\u1ed9ng theo ph\u01b0\u01a1ng vu\u00f4ng g\u00f3c v\u1edbi b\u1ec1 m\u1eb7t ch\u1ea5t l\u1ecfng c\u00f9ng t\u1ea7n s\u1ed1 50Hz v\u00e0 c\u00f9ng pha ban \u0111\u1ea7u, coi bi\u00ean \u0111\u1ed9 s\u00f3ng kh\u00f4ng \u0111\u1ed5i. Tr\u00ean \u0111o\u1ea1n th\u1eb3ng AB th\u1ea5y hai \u0111i\u1ec3m c\u00e1ch nhau 9cm dao \u0111\u1ed9ng v\u1edbi bi\u00ean \u0111\u1ed9 c\u1ef1c \u0111\u1ea1i. Bi\u1ebft v\u1eadn t\u1ed1c tr\u00ean m\u1eb7t ch\u1ea5t l\u1ecfng c\u00f3 gi\u00e1 tr\u1ecb trong kho\u1ea3ng 1,5m\/s <v<2,25m\/s. V\u1eadn t\u1ed1c truy\u1ec1n s\u00f3ng tr\u00ean m\u1eb7t ch\u1ea5t l\u1ecfng \u0111\u00f3 l\u00e0:<\/p>\nA. 1,75m\/s B.1,8m\/s C. 2m\/s D. 2,2m\/s<\/p>\n
![](\"http:\/\/img.toanhoc247.com\/picture\/2016\/0121\/7.png\")
<\/p>\n
\u0110\u1ea5p \u00e1n \u0111\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n L\u00fd 2016 -THPT Qu\u1ea3ng X\u01b0\u01a1ng L\u1ea7n 1<\/strong><\/h3>\n![](\"http:\/\/img.toanhoc247.com\/picture\/2016\/0121\/8.png\")
<\/strong><\/p>\n<\/strong><\/strong><\/strong><\/p>\n
<\/strong><\/p>\nT\u1ea5t c\u1ea3 n\u1ed9i dung b\u00e0i vi\u1ebft. C\u00e1c em h\u00e3y xem th\u00eam v\u00e0 t\u1ea3i file chi ti\u1ebft t\u1ea1i \u0111\u00e2y:<\/strong>Download<\/p>\n","protected":false},"excerpt":{"rendered":"\u0110\u1ec1 thi v\u00e0 \u0111\u00e1p \u00e1n \u0111\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n L\u00fd n\u0103m 2016 c\u1ee7a THPT Qu\u1ea3ng X\u01b0\u01a1ng t\u1ec9nh Thanh H\u00f3a t\u1ed5 ch\u1ee9c thi th\u1eed l\u1ea7n 1 v\u00e0o ng\u00e0y 19\/1\/2016.C\u00e1c em tham kh\u1ea3o \u0111\u1ec1 thi v\u00e0 h\u01b0\u1edbng d\u1eabn gi\u1ea3i d\u01b0\u1edbi \u0111\u00e2y: Xem th\u00eam: \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n L\u00fd C\u00e2u 8: Dao […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[25],"tags":[],"yoast_head":"\n
\u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n L\u00fd 2016 -THPT Qu\u1ea3ng X\u01b0\u01a1ng L\u1ea7n 1<\/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\/de-thi-thu-thpt-quoc-gia-mon-ly-2016-thpt-quang-xuong-lan-1\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n L\u00fd 2016 -THPT Qu\u1ea3ng X\u01b0\u01a1ng L\u1ea7n 1\" \/>\n<meta property=\"og:description\" content=\"\u0110\u1ec1 thi v\u00e0 \u0111\u00e1p \u00e1n \u0111\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n L\u00fd n\u0103m 2016 c\u1ee7a THPT Qu\u1ea3ng X\u01b0\u01a1ng t\u1ec9nh Thanh H\u00f3a t\u1ed5 ch\u1ee9c thi th\u1eed l\u1ea7n 1 v\u00e0o ng\u00e0y 19\/1\/2016.C\u00e1c em tham kh\u1ea3o \u0111\u1ec1 thi v\u00e0 h\u01b0\u1edbng d\u1eabn gi\u1ea3i d\u01b0\u1edbi \u0111\u00e2y: Xem th\u00eam: \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n L\u00fd C\u00e2u 8: Dao […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/lop12.edu.vn\/de-thi-thu-thpt-quoc-gia-mon-ly-2016-thpt-quang-xuong-lan-1\/\" \/>\n<meta property=\"og:site_name\" content=\"Lop12.edu.vn - 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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\/8219caa3d91a087a4ce81b8b5ac734b5","name":"Lop12","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/lop12.edu.vn\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/65b2897b6a31b932be1276ba7fc18d41?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/65b2897b6a31b932be1276ba7fc18d41?s=96&d=mm&r=g","caption":"Lop12"},"sameAs":["http:\/\/www.lop12.edu.vn","www.facebook.com\/lop12.edu.vn\/"],"url":"https:\/\/lop12.edu.vn\/author\/hungld\/"}]}},"_links":{"self":[{"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/posts\/1623"}],"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\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/comments?post=1623"}],"version-history":[{"count":0,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/posts\/1623\/revisions"}],"wp:attachment":[{"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/media?parent=1623"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/categories?post=1623"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/tags?post=1623"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
Xem th\u00eam: \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n L\u00fd<\/p>\n<\/div>\n
C\u00e2u 8<\/strong>: Dao \u0111\u1ed9ng c\u1ee7a m\u1ed9t v\u1eadt c\u00f3 bi\u00ean \u0111\u1ed9 gi\u1ea3m d\u1ea7n theo th\u1eddi gian g\u1ecdi l\u00e0<\/p>\n A.dao \u0111\u1ed9ng t\u1ef1 do B. dao \u0111\u1ed9ng t\u1eaft d\u1ea7n C. dao \u0111\u1ed9ng c\u01b0\u1ee1ng b\u1ee9c D.dao \u0111\u1ed9ng duy tr\u00ec<\/p>\n C\u00e2u 9<\/strong>: M\u1ed9t con l\u1eafc \u0111\u01a1n v\u1eadt c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng v\u1eadt n\u1eb7ng m dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a v\u1edbi t\u1ea7n s\u1ed1 f. N\u1ebfu kh\u1ed1i l\u01b0\u1ee3ng v\u1eadt n\u1eb7ng l\u00e0 2m th\u00ec t\u1ea7n s\u1ed1 dao \u0111\u1ed9ng c\u1ee7a v\u1eadt l\u00e0:<\/p>\n A.2f B.4f C.0,5f D. f<\/p>\n C\u00e2u 10<\/strong>: ch\u1ecdn c\u00e2u sai. B\u01b0\u1edbc s\u00f3ng A. Qu\u00e3ng \u0111\u01b0\u1eddng s\u00f3ng truy\u1ec1n \u0111i trong kh\u00f4ng gian 1 chu k\u00ec s\u00f3ng<\/p>\n B. Kho\u1ea3ng c\u00e1ch ng\u1eafn nh\u1ea5t gi\u1eefa 2 \u0111i\u1ec3m dao \u0111\u1ed9ng c\u00f9ng pha tr\u00ean ph\u01b0\u01a1ng truy\u1ec1n s\u00f3ng<\/p>\n C. Qu\u00e3ng \u0111\u01b0\u1eddng s\u00f3ng truy\u1ec1n \u0111i trong th\u1eddi gian 1 gi\u00e2y<\/p>\n D. Hai l\u1ea7n kho\u1ea3ng c\u00e1ch ng\u1eafn nh\u1ea5t gi\u1eefa hai \u0111i\u1ec3m tr\u00ean ph\u01b0\u01a1ng truy\u1ec1n s\u00f3ng dao \u0111\u1ed9ng ng\u01b0\u1ee3c pha.<\/p>\n C\u00e2u 11<\/strong>: Cho d\u00f2ng \u0111i\u1ec7n ba pha c\u00f3 t\u1ea7n s\u1ed1 g\u00f3c A. B\u1eb1ng C. Nh\u1ecf h\u01a1n C\u00e2u 12<\/strong>: Hai ngu\u1ed3n ph\u00e1t s\u00f3ng k\u1ebft h\u1ee3p A,B tr\u00ean m\u1eb7t ch\u1ea5t l\u1ecfng dao \u0111\u1ed9ng theo ph\u01b0\u01a1ng vu\u00f4ng g\u00f3c v\u1edbi b\u1ec1 m\u1eb7t ch\u1ea5t l\u1ecfng c\u00f9ng t\u1ea7n s\u1ed1 50Hz v\u00e0 c\u00f9ng pha ban \u0111\u1ea7u, coi bi\u00ean \u0111\u1ed9 s\u00f3ng kh\u00f4ng \u0111\u1ed5i. Tr\u00ean \u0111o\u1ea1n th\u1eb3ng AB th\u1ea5y hai \u0111i\u1ec3m c\u00e1ch nhau 9cm dao \u0111\u1ed9ng v\u1edbi bi\u00ean \u0111\u1ed9 c\u1ef1c \u0111\u1ea1i. Bi\u1ebft v\u1eadn t\u1ed1c tr\u00ean m\u1eb7t ch\u1ea5t l\u1ecfng c\u00f3 gi\u00e1 tr\u1ecb trong kho\u1ea3ng 1,5m\/s <v<2,25m\/s. V\u1eadn t\u1ed1c truy\u1ec1n s\u00f3ng tr\u00ean m\u1eb7t ch\u1ea5t l\u1ecfng \u0111\u00f3 l\u00e0:<\/p>\n A. 1,75m\/s B.1,8m\/s C. 2m\/s D. 2,2m\/s<\/p>\n <\/strong><\/strong><\/strong><\/p>\n T\u1ea5t c\u1ea3 n\u1ed9i dung b\u00e0i vi\u1ebft. C\u00e1c em h\u00e3y xem th\u00eam v\u00e0 t\u1ea3i file chi ti\u1ebft t\u1ea1i \u0111\u00e2y:<\/strong>Download<\/p>\n","protected":false},"excerpt":{"rendered":" \u0110\u1ec1 thi v\u00e0 \u0111\u00e1p \u00e1n \u0111\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n L\u00fd n\u0103m 2016 c\u1ee7a THPT Qu\u1ea3ng X\u01b0\u01a1ng t\u1ec9nh Thanh H\u00f3a t\u1ed5 ch\u1ee9c thi th\u1eed l\u1ea7n 1 v\u00e0o ng\u00e0y 19\/1\/2016.C\u00e1c em tham kh\u1ea3o \u0111\u1ec1 thi v\u00e0 h\u01b0\u1edbng d\u1eabn gi\u1ea3i d\u01b0\u1edbi \u0111\u00e2y: Xem th\u00eam: \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n L\u00fd C\u00e2u 8: Dao […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[25],"tags":[],"yoast_head":"\n c\u1ee7a s\u00f3ng c\u01a1 h\u1ecdc l\u00e0:<\/p>\n
ch\u1ea1y qua \u0111\u1ed9ng c\u01a1 kh\u00f4ng \u0111\u1ed3ng b\u1ed9 ba pha th\u00ec roto c\u1ee7a \u0111\u1ed9ng c\u01a1 quay v\u1edbi t\u1ed1c \u0111\u1ed9 g\u00f3c<\/p>\n
B. l\u1edbn h\u01a1n
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D. l\u1edbn h\u01a1n hay nh\u1ecf h\u01a1n
c\u00f2n ph\u1ee5 thu\u1ed9c v\u00e0o t\u1ea3i c\u1ee7a \u0111\u1ed9ng c\u01a1.<\/p>\n
<\/p>\n\u0110\u1ea5p \u00e1n \u0111\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n L\u00fd 2016 -THPT Qu\u1ea3ng X\u01b0\u01a1ng L\u1ea7n 1<\/strong><\/h3>\n
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