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{"id":25956,"date":"2018-04-09T18:00:39","date_gmt":"2018-04-09T11:00:39","guid":{"rendered":"https:\/\/lop12.edu.vn\/?p=25956"},"modified":"2018-04-09T18:00:39","modified_gmt":"2018-04-09T11:00:39","slug":"bai-tap-trac-nghiem-vat-li-12-truyen-tai-dien-nang-may-bien-ap","status":"publish","type":"post","link":"https:\/\/lop12.edu.vn\/bai-tap-trac-nghiem-vat-li-12-truyen-tai-dien-nang-may-bien-ap\/","title":{"rendered":"B\u00e0i t\u1eadp tr\u1eafc nghi\u1ec7m V\u1eadt L\u00ed 12: Truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng – M\u00e1y bi\u1ebfn \u00e1p"},"content":{"rendered":"

C\u00e2u 1:<\/b>\u00a0. Tr\u1ea1m ph\u00e1t \u0111i\u1ec7n truy\u1ec1n \u0111i c\u00f4ng su\u1ea5t 550 kW, \u0111i\u1ec7n \u00e1p n\u01a1i ph\u00e1t b\u1eb1ng 10 kV. Mu\u1ed1n \u0111\u1ed9 gi\u1ea3m \u0111i\u1ec7n \u00e1p tr\u00ean d\u00e2y t\u1ea3i kh\u00f4ng v\u01b0\u1edbt qu\u00e1 10% \u0111i\u1ec7n \u00e1p n\u01a1i ph\u00e1t th\u00ec \u0111i\u1ec7n tr\u1edf c\u1ee7a d\u00e2y t\u1ea3i \u0111i\u1ec7n kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 gi\u00e1 tr\u1ecb<\/p>\n

A. 18 \u03a9 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 B. 11 \u03a9 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 C. 55 \u03a9 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 D. 5,5 \u03a9<\/p>\n

C\u00e2u 2:<\/b>\u00a0M\u1ed9t h\u1ecdc sinh qu\u1ea5n m\u1ed9t m\u00e1y bi\u1ebfn \u00e1p v\u1edbi l\u00f5i s\u1eaft kh\u00f4ng ph\u00e2n nh\u00e1nh, c\u00f3 s\u1ed1 v\u00f2ng d\u00e2y cu\u1ed9n th\u1ee9 c\u1eadp g\u1ea7p hai l\u1ea7n s\u1ed1 v\u00f2ng d\u00e2y cu\u1ed9n s\u01a1 c\u1ea5p. Khi \u0111\u1eb7t v\u00e0o hai \u0111\u1ea7u cu\u1ed9n s\u01a1 c\u1ea5p m\u1ed9t \u0111i\u1ec7n \u00e1p xoay chi\u1ec1u c\u00f3 gi\u00e1 tr\u1ecb hi\u1ec7u d\u1ee5ng U th\u00ec \u0111i\u1ec7n \u00e1p hi\u1ec7u d\u1ee5ng \u1edf hai \u0111\u1ea7u cu\u1ed9n th\u1ee9 c\u1ea5p \u0111\u1ebb h\u1edf l\u00e0 1,9 U. Khi ki\u1ec3m tra th\u00ec ph\u00e1t hi\u1ec7n trong cu\u1ed9n th\u1ee9 c\u1ea5p c\u00f3 50 v\u00f2ng d\u00e2y b\u1ecb qu\u1ea5n ng\u01b0\u1ee3c chi\u1ec1u so v\u1edbi \u0111a s\u1ed1 c\u00e1c v\u00f2ng d\u00e2y trong \u0111\u00f3. B\u1ecf qua m\u1ecdi hao ph\u00ed trong m\u00e1y bi\u1ebfn \u00e1p. T\u1ed5ng s\u1ed1 v\u00f2ng d\u00e2y \u0111\u00e3 \u0111\u01b0\u1ee3c qu\u1ea5n trong m\u00e1y bi\u1ebfn \u00e1p n\u00e0y l\u00e0<\/p>\n

A. 1900 v\u00f2ng \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 B. 3000 v\u00f2ng \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 C. 1950 v\u00f2ng \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 D. 2900 v\u00f2ng<\/p>\n

C\u00e2u 3:<\/b>\u00a0\u0110i\u1ec7n n\u0103ng \u0111\u01b0\u1ee3c t\u1ea3i t\u1eeb m\u1ed9t m\u00e1y ph\u00e1t \u0111i\u1ec7n \u0111\u1ebfn n\u01a1i ti\u00eau th\u1ee5 b\u1eb1ng \u0111\u01b0\u1eddng d\u00e2y c\u00f3 \u0111i\u1ec7n tr\u1edf R = 50 \u03a9. Bi\u1ebft \u0111i\u1ec7n \u00e1p gi\u1eefa hai \u0111\u1ea7u cu\u1ed9n s\u01a1 c\u1ea5p v\u00e0 cu\u1ed9n th\u1ee9 c\u1ea5p m\u00e1y h\u1ea1 th\u1ebf l\u1ea7n l\u01b0\u1ee3t l\u00e0 U1<\/sub>=2000 V,U2<\/sub>=200 V. C\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y tr\u1ecdng cu\u1ed9n th\u1ee9 c\u1ea5p m\u00e1y h\u1ea1 th\u1ebf I2<\/sub>=200 A. Hi\u1ec7u su\u1ea5t truy\u1ec1n t\u1ea3i \u0111i\u1ec7n l\u00e0<\/p>\n

A. 85% \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 B. 90 % \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 C. 87% \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 D. 95%<\/p>\n

C\u00e2u 4:<\/b>\u00a0C\u00f3 hai m\u00e1y bi\u1ebfn \u00e1p l\u00ed t\u01b0\u1edfng (b\u1ecf qua m\u1ecdi hao ph\u00ed) c\u00e1c cu\u1ed9n s\u01a1 c\u00e1p c\u00f3 c\u00f9ng s\u1ed1 v\u00f2ng d\u00e2y nh\u01b0ng c\u00e1c cu\u1ed9n th\u1ee9 c\u1ea5p c\u00f3 s\u1ed1 v\u00f2ng d\u00e2y kh\u00e1c nhau. Khi \u0111\u1eb7t \u0111i\u1ec7n \u00e1p xoay chi\u1ec1u c\u00f3 gi\u00e1 tr\u1ecb hi\u1ec7u d\u1ee5ng U kh\u00f4ng \u0111\u1ed5i v\u00e0o hai \u0111\u1ea7u cu\u1ed9n th\u1ee9 c\u1ea5p c\u1ee7a m\u00e1y th\u1ee9 nh\u1ea5t th\u00ec t\u1ec9 s\u1ed1 gi\u1eefa \u0111i\u1ec7n \u00e1p hi\u1ec7u d\u1ee5ng \u1edf hai \u0111\u1ea7u cu\u1ed9n th\u1ee9 c\u1ea5p v\u00e0 cu\u1ed9n s\u01a1 c\u1ea5p \u0111\u1ec3 h\u1edf c\u1ee7a m\u00e1y \u0111\u00f3 l\u00e0 1,5. Khi \u0111\u1ea1t \u0111i\u1ec7n \u00e1p xoay chi\u1ec1u n\u00f3i tr\u00ean v\u00e0o hai \u0111\u1ea7u cu\u1ed9n s\u01a1 c\u1ea5p c\u1ee7a m\u00e1y th\u1ee9 hai th\u00ec t\u1ec9 s\u1ed1 \u0111\u00f3 l\u00e0 2. Khi c\u00f9ng thay \u0111\u1ed5i s\u1ed1 v\u00f2ng d\u00e2y c\u1ee7a cu\u1ed9n th\u1ee9 c\u1ea5p c\u1ee7a m\u1ed7i m\u00e1y 50 v\u00f2ng d\u00e2y r\u1ed3i l\u1eb7p l\u1ea1i th\u00ed nghi\u1ec7m th\u00ec t\u1ec9 s\u1ed1 \u0111i\u1ec7n \u00e1p n\u00f3i tr\u00ean c\u1ee7 hai m\u00e1y l\u00e0 b\u1eb1ng nhau. S\u1ed1 v\u00f2ng d\u00e2y c\u1ee7a cu\u1ed9n s\u01a1 c\u1ea5p m\u1ed7i m\u00e1y l\u00e0<\/p>\n

A. 100 v\u00f2ng \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 B. 150 v\u00f2ng \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 C. 250 v\u00f2ng \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0D. 200 v\u00f2ng<\/p>\n

C\u00e2u 5:<\/b>\u00a0Ngu\u1ed3i ta c\u1ea7n truy\u1ec1n \u0111i xa m\u1ed9t c\u00f4ng su\u1ea5t \u0111i\u1ec7n 1 MW d\u01b0\u1edbi \u0111i\u1ec7n \u00e1p 6 kV, m\u1ea1ch c\u00f3 h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t cos\u03c6 = 0,9. \u0110\u1ec3 hi\u1ec7u su\u1ea5t truy\u1ec1n t\u1ea3i \u0111i\u1ec7n kh\u00f4ng nh\u1ecf h\u01a1n 80% th\u00ec \u0111i\u1ec7n tr\u1edf R c\u1ee7a \u0111\u01b0\u1eddng d\u00e2y ph\u1ea3i th\u1ecfa m\u00e3n<\/p>\n

A.R\u22645,8 \u03a9 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 B. R\u22643,6 \u03a9<\/p>\n

C. R\u226436 \u03a9 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 D. R\u226472 \u03a9<\/p>\n

C\u00e2u 6:<\/b>\u00a0\u0110i\u1ec7n n\u0103ng \u0111\u01b0\u1ee3c truy\u1ec1n \u0111i v\u1edbi c\u00f4ng su\u1ea5t P tr\u00ean m\u1ed9t \u0111\u01b0\u1eddng d\u00e2y t\u1ea3i \u0111i\u1ec7n v\u1edbi m\u1ed9t \u0111i\u1ec7n \u00e1p \u1edf tr\u1ea1m truy\u1ec1n l\u00e0 U, hi\u1ec7u su\u1ea5t c\u1ee7a qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i l\u00e0 H. Gi\u1eef nguy\u00ean \u0111i\u1ec7n \u00e1p tr\u1ea1m truy\u1ec1n tr\u1ea3i \u0111i\u1ec7n nh\u01b0ng t\u0103ng c\u00f4ng su\u1ea5t truy\u1ec1n t\u1ea3i l\u00ean k l\u1ea7n th\u00ec c\u00f4ng su\u1ea5t hao ph\u00ed tr\u00ean \u0111\u01b0\u1eddng d\u00e2y t\u1ea3i \u0111i\u1ec7n l\u00e0<\/p>\n

\"\"<\/p>\n

C\u00e2u 7:<\/b>\u00a0\u0110i\u1ec7n n\u0103ng \u0111\u01b0\u1ee3c truy\u1ec1n \u0111i v\u1edbi c\u00f4ng su\u1ea5t P tr\u00ean m\u1ed9t \u0111\u01b0\u1eddng d\u00e2y t\u1ea3i \u0111i\u1ec7n v\u1edbi m\u1ed9t \u0111i\u1ec7n \u00e1p \u1edf tr\u1ea1m truy\u1ec1n l\u00e0 U, hi\u1ec7u su\u1ea5t c\u1ee7a qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i l\u00e0 90%. N\u1ebfu gi\u1eef nguy\u00ean \u0111i\u1ec7n \u00e1p tr\u1ea1m truy\u1ec1n tr\u1ea3i \u0111i\u1ec7n nh\u01b0ng gi\u1ea3m c\u00f4ng su\u1ea5t truy\u1ec1n t\u1ea3i \u0111i 2 l\u1ea7n th\u00ec hi\u1ec7u su\u1ea5t truy\u1ec1n t\u1ea3i \u0111i\u1ec7n khi \u0111\u00f3 l\u00e0<\/p>\n

A. 80% \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 B. 85% \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 C. 90% \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 D. 95%<\/p>\n

C\u00e2u 8:<\/b>\u00a0M\u1ed9t \u0111\u01b0\u1eddng d\u00e2y c\u00f3 \u0111i\u1ec7n tr\u1edf R = 2 \u03a9, d\u1eabn m\u1ed9t d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u m\u1ed9t pha t\u1eeb n\u01a1i s\u1ea3n xu\u1ea5t \u0111\u1ebfn n\u01a1i ti\u00eau th\u1ee5. \u0110i\u1ec7n \u00e1p hi\u1ec7u d\u1ee5ng \u1edf ngu\u1ed3n \u0111i\u1ec7n l\u00fac ph\u00e1t ra l\u00e0 5000 V, c\u00f4ng su\u1ea5t c\u1ea7n truy\u1ec1n t\u1ea3i l\u00e0 500 kW. H\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t c\u1ee7a m\u1ea1ch \u0111i\u1ec7n l\u00e0 0,8. C\u00f3 bao nhi\u00eau ph\u1ea7n tr\u0103m c\u00f4ng su\u1ea5t b\u1ecb m\u1ea5t tr\u00ean \u0111\u01b0\u1eddng d\u00e2y do to\u1ea3n nhi\u1ec7t?<\/p>\n

A. 6,25 % \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 B. 10% \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0C. 3,25% \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0D. 8%<\/p>\n

C\u00e2u 9:<\/b>\u00a0\u0110i\u1ec7n n\u0103ng \u1edf m\u1ed9t tr\u1ea1m \u0111i\u1ec7n \u0111\u01b0\u1ee3c truy\u1ec1n \u0111i d\u01b0\u1edbi \u0111i\u1ec7n \u00e1p 2 kV, hi\u1ec7u su\u1ea5t trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i l\u00e0 80%. Bi\u1ebft c\u00f4ng su\u1ea5t truy\u1ec1n \u0111i l\u00e0 kh\u00f4ng \u0111\u1ed5i. Mu\u1ed1n hi\u1ec7u su\u1ea5t trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i t\u0103ng \u0111\u1ebfn 95% th\u00ec ta ph\u1ea3i<\/p>\n

A. gi\u1ea3m \u0111i\u1ec7n \u00e1p xu\u1ed1ng c\u00f2n 1 kV<\/p>\n

B. t\u0103ng \u0111i\u1ec7n \u00e1p l\u00ean \u0111\u1ebfn 8 kV<\/p>\n

C. gi\u1ea3m \u0111i\u1ec7n \u00e1p xu\u1ed1ng c\u00f2n 0,5 kV<\/p>\n

D. t\u0103ng \u0111i\u1ec7n \u00e1p l\u00ean \u0111\u1ebfn 4 kV<\/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>\nA<\/td>\nB<\/td>\nC<\/td>\nD<\/td>\nA<\/td>\nB<\/td>\nD<\/td>\nA<\/td>\nD<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

C\u00e2u 1:<\/b>\u00a0A<\/p>\n

\"\"<\/p>\n

C\u00e2u 2:<\/b>\u00a0B<\/p>\n

N2<\/sub>=2N1<\/sub><\/p>\n

V\u00ec cu\u1ed9n th\u1ee9 c\u1ea5p c\u00f3 50 v\u00f2ng d\u00e2y qu\u1ea5n ng\u01b0\u1ee3c,<\/p>\n

n\u00ean ta c\u00f3 ph\u01b0\u01a1ng tr\u00ecnh :<\/p>\n

\"\"<\/p>\n

\u21d2N1<\/sub>=1000 v\u00f2ng<\/p>\n

\u21d2 T\u1ed5ng s\u1ed1 v\u00f2ng d\u00e2y \u0111\u00e3 d\u01b0\u1ee3c qu\u1ea5n trong m\u00e1y bi\u1ebfn \u00e1p l\u00e0 3000 v\u00f2ng<\/p>\n

C\u00e2u 3:<\/b>\u00a0C<\/p>\n

\"\"<\/p>\n

C\u00e2u 4:<\/b>\u00a0D<\/p>\n

G\u1ecdi s\u1ed1 v\u00f2ng d\u00e2y cu\u1ed9n s\u01a1 c\u1ea5p l\u00e0 N, cu\u1ed9n th\u1ee9 c\u1ea5p l\u00e0 N1<\/sub>\u00a0v\u00e0 N2<\/sub><\/p>\n

Theo \u0111\u1ec1 b\u00e0o ta c\u00f3 :<\/p>\n

\"\"<\/p>\n

C\u00e2u 5:<\/b>\u00a0A<\/p>\n

\"\"<\/p>\n

C\u00e2u 6:<\/b>\u00a0B<\/p>\n

\"\"<\/p>\n

C\u00e2u 7:<\/b>\u00a0D<\/p>\n

\"\"<\/p>\n

C\u00e2u 8:<\/b>\u00a0A<\/p>\n

\"\"<\/p>\n

C\u00e2u 9:<\/b>\u00a0D<\/p>\n

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

C\u00e2u 1:\u00a0. Tr\u1ea1m ph\u00e1t \u0111i\u1ec7n truy\u1ec1n \u0111i c\u00f4ng su\u1ea5t 550 kW, \u0111i\u1ec7n \u00e1p n\u01a1i ph\u00e1t b\u1eb1ng 10 kV. Mu\u1ed1n \u0111\u1ed9 gi\u1ea3m \u0111i\u1ec7n \u00e1p tr\u00ean d\u00e2y t\u1ea3i kh\u00f4ng v\u01b0\u1edbt qu\u00e1 10% \u0111i\u1ec7n \u00e1p n\u01a1i ph\u00e1t th\u00ec \u0111i\u1ec7n tr\u1edf c\u1ee7a d\u00e2y t\u1ea3i \u0111i\u1ec7n kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 gi\u00e1 tr\u1ecb A. 18 \u03a9 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 B. 11 \u03a9 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 […]<\/p>\n","protected":false},"author":3,"featured_media":25957,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[158],"tags":[1443,1442],"yoast_head":"\nB\u00e0i t\u1eadp tr\u1eafc nghi\u1ec7m V\u1eadt L\u00ed 12: Truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng - M\u00e1y bi\u1ebfn \u00e1p<\/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-truyen-tai-dien-nang-may-bien-ap\/\" \/>\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: Truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng - M\u00e1y bi\u1ebfn \u00e1p\" \/>\n<meta property=\"og:description\" content=\"C\u00e2u 1:\u00a0. Tr\u1ea1m ph\u00e1t \u0111i\u1ec7n truy\u1ec1n \u0111i c\u00f4ng su\u1ea5t 550 kW, \u0111i\u1ec7n \u00e1p n\u01a1i ph\u00e1t b\u1eb1ng 10 kV. 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