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{"id":26232,"date":"2018-04-10T16:31:49","date_gmt":"2018-04-10T09:31:49","guid":{"rendered":"https:\/\/lop12.edu.vn\/?p=26232"},"modified":"2018-04-10T16:31:49","modified_gmt":"2018-04-10T09:31:49","slug":"bai-tap-trac-nghiem-vat-li-12-dai-cuong-ve-dong-dien-xoay-chieu","status":"publish","type":"post","link":"https:\/\/lop12.edu.vn\/bai-tap-trac-nghiem-vat-li-12-dai-cuong-ve-dong-dien-xoay-chieu\/","title":{"rendered":"B\u00e0i t\u1eadp tr\u1eafc nghi\u1ec7m V\u1eadt L\u00ed 12: \u0110\u1ea1i c\u01b0\u01a1ng v\u1ec1 d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u"},"content":{"rendered":"

C\u00e2u 1:<\/b>\u00a0M\u1ed1i quan h\u1ec7 gi\u1eefa c\u01b0\u1eddng \u0111\u1ecd d\u00f2ng \u0111i\u1ec7m hi\u1ec7u d\u1ee5ng v\u1edbi c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n c\u1ef1c \u0111\u1ea1i c\u1ee7a d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u l\u00e0<\/p>\n

\"\"<\/p>\n

C\u00e2u 2:<\/b>\u00a0M\u1ed9t b\u1ea1n c\u1eafm hai que \u0111o c\u1ee7a m\u1ed9t v\u00f4n k\u1ebf xoay chi\u1ec1u v\u00e0o \u1ed5 c\u1eafm \u0111i\u1ec7n trong ph\u00f2ng th\u00ed nghi\u1ec7m, th\u1ea5y v\u00f4n k\u1ebf ch\u1ec9 220 V. \u00dd ngh\u0129a c\u1ee7a con s\u1ed1 \u0111\u00f3 l\u00e0<\/p>\n

A. \u0110i\u1ec7n \u00e1p hi\u1ec7u d\u1ee5ng c\u1ee7a m\u1ea1ng \u0111i\u1ec7n trong ph\u00f2ng th\u00ed nghi\u1ec7m.<\/p>\n

B. bi\u00ean \u0111\u1ed9 c\u1ee7a \u0111i\u1ec7n \u00e1p c\u1ee7a m\u1ea1ng \u0111i\u1ec7n trong ph\u00f2ng th\u00ed nghi\u1ec7m.<\/p>\n

C. \u0111i\u1ec7n \u00e1p t\u1ee9c th\u1eddi c\u1ee7a m\u1ea1ng \u0111i\u1ec7n t\u1ea1i th\u1eddi \u0111i\u1ec3m \u0111\u00f3.<\/p>\n

D. nhi\u1ec7t l\u01b0\u1ee3ng t\u1ecfa ra tr\u00ean v\u00f4n k\u1ebf.<\/p>\n

C\u00e2u 3:<\/b>\u00a0C\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n t\u1ee9c th\u1eddi ch\u1ea1y qua m\u1ed9t \u0111o\u1ea1n m\u1ea1ch xoay chi\u1ec1u c\u00f3 bi\u1ec3u th\u1ee9c<\/p>\n

\"\"<\/p>\n

T\u1ea1i th\u1eddi \u0111i\u1ec3m t= 1\/50 s, c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n t\u1ee9c th\u1eddi trong m\u1ea1ch c\u00f3 gi\u00e1 tr\u1ecb<\/p>\n

A. c\u1ef1c \u0111\u1ea1i \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 B. c\u1ef1c ti\u1ec3u<\/p>\n

C. 2\u221a2 A v\u00e0 \u0111ang t\u0103ng \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0D. 2\u221a2 A v\u00e0 \u0111ang gi\u1ea3m<\/p>\n

C\u00e2u 4:<\/b>\u00a0K\u1ebft lu\u1eadn \u0111\u00fang khi so s\u00e1nh chu k\u00ec bi\u1ebfn \u0111\u1ed5i T1<\/sub>\u00a0c\u1ee7a c\u00f4ng su\u1ea5t t\u1ecfa nhi\u1ec7t t\u1ee9c th\u1eddi c\u1ee7a d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u v\u1edbi chu k\u00ec bi\u1ec3n \u0111\u1ed5i T2<\/sub>\u00a0c\u1ee7a d\u00f2ng \u0111i\u1ec7n \u0111\u00f3 l\u00e0<\/p>\n

A. T2<\/sub>=2T1<\/sub> \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 B. T2<\/sub>\u00a0> T1<\/sub> \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 C. T2<\/sub>\u00a0< T1<\/sub> \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 D. T2<\/sub>\u00a0= T1<\/sub><\/p>\n

C\u00e2u 5:<\/b>\u00a0\u0110i\u1ec7n \u00e1p hai \u0111\u1ea7u m\u1ed9t \u0111o\u1ea1n m\u1ea1ch c\u00f3 bi\u1ec3u th\u1ee9c u = 60cos120\u03c0t (V). Trong 1 s, s\u1ed1 l\u1ea7n \u0111i\u1ec7n \u00e1p u c\u00f3 \u0111\u1ed9 l\u1edbn b\u1eb1ng 30 V l\u00e0<\/p>\n

A. 30 l\u1ea7n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 B. 120 l\u1ea7n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 C. 240 l\u1ea7n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 D. 60 l\u1ea7n<\/p>\n

C\u00e2u 6:<\/b>\u00a0Trong c\u00e1c bi\u1ec3u th\u1ee9c sau \u0111\u00e2y, bi\u1ec3u th\u1ee9c bi\u1ec3u di\u1ec5n d\u00f2ng \u0111i\u1ec7n bi\u1ebfn \u0111\u1ed5i tu\u1ea7n ho\u00e0n v\u1edbi chu k\u00ec 0,01 s l\u00e0<\/p>\n

\"\"<\/p>\n

C\u00e2u 7:<\/b>\u00a0M\u1ed9t \u0111\u00e8n \u1ed1ng \u0111\u01b0\u1ee3c m\u1eafc v\u00e0o m\u1ea1ch \u0111i\u1ec7n xoay chi\u1ec1u c\u00f3 \u0111i\u1ec7n \u00e1p hi\u1ec7u d\u1ee5ng l\u00e0 U. Bi\u1ebft \u0111\u00e8n s\u00e1ng khi \u0111i\u1ec7n \u00e1p gi\u1eefa hai c\u1ef1c c\u1ee7a \u0111\u00e8n kh\u00f4ng nh\u1ecf h\u01a1n (U\u221a2)\/2. T\u1ec9 s\u1ed1 gi\u1eefa th\u1eddi gian \u0111\u00e8n t\u1eaft v\u00e0 th\u1eddi gian \u0111\u00e8n s\u00e1ng trong m\u1ed9t chu k\u00ec d\u00f2ng \u0111i\u1ec7n l\u00e0<\/p>\n

A. 1 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0B. 1\/2 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 C. 1\/3 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0D. 2<\/p>\n

C\u00e2u 8:<\/b>\u00a0T\u1eeb th\u00f4ng qua m\u1ed9t cu\u1ed9n d\u00e2y c\u00f3 bi\u1ec3u th\u1ee9c<\/p>\n

\"\"<\/p>\n

L\u00fac t = 0, su\u1ea5t \u0111i\u1ec7n \u0111\u1ed9ng c\u1ea3m \u1ee9ng trong cu\u1ed9n d\u00e2y c\u00f3 gi\u00e1 tr\u1ecb l\u00e0<\/p>\n

\"\"<\/p>\n

C\u00e2u 9:<\/b>\u00a0M\u1ed9t khung d\u00e2y quay \u0111\u1ec1u quanh tr\u1ee5c \u0111\u1ed1i x\u1ee9c n\u1eb1m trong m\u1eb7t ph\u1eb3ng khung, trong m\u1ed9t t\u1eeb tr\u01b0\u1eddng \u0111\u1ec1u c\u00f3 c\u1ea3m \u1ee9ng t\u1eeb vu\u00f4ng g\u00f3c v\u1edbi tr\u1ee5c quay, t\u1ed1c \u0111\u1ed9 quay c\u1ee7a khung d\u00e2y l\u00e0 600 v\u00f2ng\/ph\u00fat. T\u1eeb th\u00f4ng c\u1ef1c \u0111\u1ea1i g\u1eedi qua khung l\u00e0 2\/\u03c0 (Wb). Su\u1ea5t \u0111i\u1ec7n \u0111\u1ed9ng hi\u1ec7u d\u1ee5ng trong khung l\u00e0<\/p>\n

A. 20 V \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0B. 20\u221a2 V \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0C. 10 V \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0D. 10\u221a2 V<\/p>\n

H\u01b0\u1edbng d\u1eabn gi\u1ea3i v\u00e0 \u0111\u00e1p \u00e1n<\/b><\/p>\n\n\n\n\n
C\u00e2u<\/td>\n1<\/td>\n2<\/td>\n3<\/td>\n4<\/td>\n5<\/td>\n6<\/td>\n7<\/td>\n8<\/td>\n9<\/td>\n<\/tr>\n
\u0110\u00e1p \u00e1n<\/td>\nB<\/td>\nA<\/td>\nD<\/td>\nA<\/td>\nC<\/td>\nD<\/td>\nB<\/td>\nD<\/td>\nB<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

C\u00e2u 3:<\/b>\u00a0D<\/p>\n

\"\"<\/p>\n

C\u00e2u 5:<\/b>\u00a0C<\/p>\n

T\u1ea7n s\u1ed1 c\u1ee7a d\u00f2ng \u0111i\u1ec7n f = 60 Hz<\/p>\n

Trong m\u1ed9t chu k\u00ec c\u00f3 4 l\u1ea7n \u0111i\u1ec7n \u00e1p u c\u00f3 \u0111\u1ed9 l\u1edbn b\u1eb1ng 30 V<\/p>\n

\u21d2 Trong 1 s s\u1ed1 l\u1ea7n \u0111i\u1ec7n \u00e1p u c\u00f3 \u0111\u1ed9 l\u1edbn b\u1eb1ng 30 V l\u00e0 : 60.4 = 240 l\u1ea7n<\/p>\n

C\u00e2u 6:<\/b>\u00a0D<\/p>\n

i=3cos2<\/sup>(100\u03c0t) (A) = 1,5 + 1,5cos(200\u03c0t) (A) c\u00f3 chu k\u00ec T = 2\u03c0\/\u03c9 = 0,01 s<\/p>\n

C\u00e2u 7:<\/b>\u00a0B<\/p>\n

Ch\u1ecdn t = 0 l\u00e0 l\u00fac u = 0<\/p>\n

Trong n\u1eeda chu k\u00ec \u0111\u1ea7u : c\u00e1c th\u1eddi \u0111i\u1ec3m \u0111\u00e8n s\u00e1ng, t\u1eaft l\u00e0 nghi\u1ec7m d\u01b0\u01a1ng c\u1ee7a ph\u01b0\u01a1ng tr\u00ecnh :<\/p>\n

\"\"<\/p>\n

C\u00e2u 8:<\/b>\u00a0D<\/p>\n

\"\"<\/p>\n

C\u00e2u 9:<\/b>\u00a0C<\/p>\n

\"\"<\/p>\n","protected":false},"excerpt":{"rendered":"

C\u00e2u 1:\u00a0M\u1ed1i quan h\u1ec7 gi\u1eefa c\u01b0\u1eddng \u0111\u1ecd d\u00f2ng \u0111i\u1ec7m hi\u1ec7u d\u1ee5ng v\u1edbi c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n c\u1ef1c \u0111\u1ea1i c\u1ee7a d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u l\u00e0 C\u00e2u 2:\u00a0M\u1ed9t b\u1ea1n c\u1eafm hai que \u0111o c\u1ee7a m\u1ed9t v\u00f4n k\u1ebf xoay chi\u1ec1u v\u00e0o \u1ed5 c\u1eafm \u0111i\u1ec7n trong ph\u00f2ng th\u00ed nghi\u1ec7m, th\u1ea5y v\u00f4n k\u1ebf ch\u1ec9 220 V. \u00dd ngh\u0129a c\u1ee7a con […]<\/p>\n","protected":false},"author":3,"featured_media":26233,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[158],"tags":[1445,1444],"yoast_head":"\nB\u00e0i t\u1eadp tr\u1eafc nghi\u1ec7m V\u1eadt L\u00ed 12: \u0110\u1ea1i c\u01b0\u01a1ng v\u1ec1 d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u<\/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\/bai-tap-trac-nghiem-vat-li-12-dai-cuong-ve-dong-dien-xoay-chieu\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"B\u00e0i t\u1eadp tr\u1eafc nghi\u1ec7m V\u1eadt L\u00ed 12: \u0110\u1ea1i c\u01b0\u01a1ng v\u1ec1 d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u\" \/>\n<meta property=\"og:description\" content=\"C\u00e2u 1:\u00a0M\u1ed1i quan h\u1ec7 gi\u1eefa c\u01b0\u1eddng \u0111\u1ecd d\u00f2ng \u0111i\u1ec7m hi\u1ec7u d\u1ee5ng v\u1edbi c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n c\u1ef1c \u0111\u1ea1i c\u1ee7a d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u l\u00e0 C\u00e2u 2:\u00a0M\u1ed9t b\u1ea1n c\u1eafm hai que \u0111o c\u1ee7a m\u1ed9t v\u00f4n k\u1ebf xoay chi\u1ec1u v\u00e0o \u1ed5 c\u1eafm \u0111i\u1ec7n trong ph\u00f2ng th\u00ed nghi\u1ec7m, th\u1ea5y v\u00f4n k\u1ebf ch\u1ec9 220 V. \u00dd ngh\u0129a c\u1ee7a con […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/lop12.edu.vn\/bai-tap-trac-nghiem-vat-li-12-dai-cuong-ve-dong-dien-xoay-chieu\/\" \/>\n<meta property=\"og:site_name\" content=\"Lop12.edu.vn - 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