{"id":949,"date":"2015-06-22T09:21:32","date_gmt":"2015-06-22T07:21:32","guid":{"rendered":"http:\/\/cadredidactice.ub.ro\/gavrilalucian\/?p=949"},"modified":"2015-06-22T13:57:16","modified_gmt":"2015-06-22T11:57:16","slug":"cateva-observatii-referitoare-la-subiectele-date-la-examen-fdt-1021-1121","status":"publish","type":"post","link":"https:\/\/cadredidactice.ub.ro\/gavrilalucian\/2015\/06\/22\/cateva-observatii-referitoare-la-subiectele-date-la-examen-fdt-1021-1121\/","title":{"rendered":"C\u00e2teva observa\u021bii referitoare la subiectele date la examen (FDT 1021 &amp; 1121)"},"content":{"rendered":"<p><span style=\"color: #ff0000\"><strong>Problema 1:<\/strong><\/span><\/p>\n<p>Se specific\u0103 clar \u00een textul problemei c\u0103 <span style=\"color: #ff0000\">apa circul\u0103 prin manta<\/span> (adic\u0103 prin <span style=\"color: #ff0000\">zona mai \u00eenchis\u0103 la culoare<\/span> din figur\u0103):<\/p>\n<p><a href=\"https:\/\/cadredidactice.ub.ro\/wp-content\/uploads\/sites\/104\/2015\/06\/Desen-manta.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-951\" src=\"https:\/\/cadredidactice.ub.ro\/wp-content\/uploads\/sites\/104\/2015\/06\/Desen-manta.jpg\" alt=\"Desen manta\" width=\"720\" height=\"540\" srcset=\"https:\/\/cadredidactice.ub.ro\/gavrilalucian\/files\/2015\/06\/Desen-manta.jpg 720w, https:\/\/cadredidactice.ub.ro\/gavrilalucian\/files\/2015\/06\/Desen-manta-300x225.jpg 300w, https:\/\/cadredidactice.ub.ro\/gavrilalucian\/files\/2015\/06\/Desen-manta-400x300.jpg 400w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/a>\u00a0Calculul criteriului Reynolds pentru ap\u0103:<\/p>\n<p><a href=\"https:\/\/cadredidactice.ub.ro\/wp-content\/uploads\/sites\/104\/2015\/06\/Re.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter  wp-image-953\" src=\"https:\/\/cadredidactice.ub.ro\/wp-content\/uploads\/sites\/104\/2015\/06\/Re.png\" alt=\"Re\" width=\"77\" height=\"34\" \/><\/a><\/p>\n<p>unde:<\/p>\n<ul>\n<li><em>\u03c1<\/em> \u2013 densitatea apei la temperatura sa medie (kg\/m<sup>3<\/sup>);<\/li>\n<li><em>\u03bc<\/em> \u2013 viscozitatea dinamic\u0103 a apei la temperatura sa medie (Pa\u00d7s);<\/li>\n<li><em>v<\/em> \u2013 viteza de curgere a apei (m\/s);<\/li>\n<li><em>d<sub>ech<\/sub><\/em> \u2013 diametrul echivalent al sec\u021biunii de curgere (m).<\/li>\n<\/ul>\n<p><span style=\"color: #ff0000\">Diametrul echivalent al sec\u021biunii de curgere<\/span> (dac\u0103 sec\u021biunea de curgere are alt\u0103 form\u0103 dec\u00e2t cea circular\u0103) se calculeaz\u0103 cu rela\u021bia (citi\u021bi cursul!!! &#8211; <a href=\"https:\/\/cadredidactice.ub.ro\/wp-content\/uploads\/sites\/104\/2011\/03\/fenomene-de-transfer-1.pdf\">https:\/\/cadredidactice.ub.ro\/wp-content\/uploads\/sites\/104\/2011\/03\/fenomene-de-transfer-1.pdf<\/a> &#8211; pagina 63, ec. 3.103):<\/p>\n<p><a href=\"https:\/\/cadredidactice.ub.ro\/wp-content\/uploads\/sites\/104\/2015\/06\/dech.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-955\" src=\"https:\/\/cadredidactice.ub.ro\/wp-content\/uploads\/sites\/104\/2015\/06\/dech.png\" alt=\"dech\" width=\"52\" height=\"29\" \/><\/a><\/p>\n<p>\u00een care:<\/p>\n<ul>\n<li><em>A<\/em> \u2013 aria sec\u021biunii de curgere (m<sup>2<\/sup>);<\/li>\n<li><em>P<sub>u<\/sub><\/em> \u2013 perimetrul udat de c\u0103tre fluid (m).<\/li>\n<\/ul>\n<p>Pentru spa\u021biul \u00een form\u0103 de <strong>U <\/strong>(sec\u021biunea de curgere), cu nota\u021biile din figur\u0103:<\/p>\n<p><a href=\"https:\/\/cadredidactice.ub.ro\/wp-content\/uploads\/sites\/104\/2015\/06\/aria.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-956\" src=\"https:\/\/cadredidactice.ub.ro\/wp-content\/uploads\/sites\/104\/2015\/06\/aria.png\" alt=\"aria\" width=\"453\" height=\"49\" srcset=\"https:\/\/cadredidactice.ub.ro\/gavrilalucian\/files\/2015\/06\/aria.png 453w, https:\/\/cadredidactice.ub.ro\/gavrilalucian\/files\/2015\/06\/aria-300x32.png 300w\" sizes=\"auto, (max-width: 453px) 100vw, 453px\" \/><\/a><\/p>\n<p>\u0219i:<\/p>\n<p><a href=\"https:\/\/cadredidactice.ub.ro\/wp-content\/uploads\/sites\/104\/2015\/06\/perimetrul.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-957\" src=\"https:\/\/cadredidactice.ub.ro\/wp-content\/uploads\/sites\/104\/2015\/06\/perimetrul.png\" alt=\"perimetrul\" width=\"453\" height=\"28\" srcset=\"https:\/\/cadredidactice.ub.ro\/gavrilalucian\/files\/2015\/06\/perimetrul.png 453w, https:\/\/cadredidactice.ub.ro\/gavrilalucian\/files\/2015\/06\/perimetrul-300x19.png 300w\" sizes=\"auto, (max-width: 453px) 100vw, 453px\" \/><\/a><\/p>\n<p>de unde, <strong>diametrul echivalent al sec\u021biunii de curgere<\/strong> va fi:<\/p>\n<p><a href=\"https:\/\/cadredidactice.ub.ro\/wp-content\/uploads\/sites\/104\/2015\/06\/Untitled2.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-972\" src=\"https:\/\/cadredidactice.ub.ro\/wp-content\/uploads\/sites\/104\/2015\/06\/Untitled2.png\" alt=\"Untitled2\" width=\"225\" height=\"37\" \/><\/a><\/p>\n<p>Varianta pdf o g\u0103si\u021bi aici:\u00a0<a href=\"https:\/\/cadredidactice.ub.ro\/wp-content\/uploads\/sites\/104\/2015\/06\/C\u00e2teva-observa\u021bii-referitoare-la-subiectele-date-la-examen1.pdf\">C\u00e2teva observa\u021bii referitoare la subiectele date la examen<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Problema 1: Se specific\u0103 clar \u00een textul problemei c\u0103 apa circul\u0103 prin manta (adic\u0103 prin zona mai \u00eenchis\u0103 la culoare din figur\u0103): \u00a0Calculul criteriului Reynolds pentru ap\u0103: unde: \u03c1 \u2013 densitatea apei la temperatura sa medie (kg\/m3); \u03bc \u2013 viscozitatea dinamic\u0103 a apei la temperatura sa medie (Pa\u00d7s); v \u2013 viteza de curgere a apei &hellip; <a href=\"https:\/\/cadredidactice.ub.ro\/gavrilalucian\/2015\/06\/22\/cateva-observatii-referitoare-la-subiectele-date-la-examen-fdt-1021-1121\/\" class=\"more-link\">Continu\u0103 lectura <span class=\"screen-reader-text\">C\u00e2teva observa\u021bii referitoare la subiectele date la examen (FDT 1021 &amp; 1121)<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":271,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"gallery","meta":{"footnotes":""},"categories":[156,159],"tags":[],"class_list":["post-949","post","type-post","status-publish","format-gallery","hentry","category-fenomene-de-transfer","category-rezultate-examene","post_format-post-format-gallery"],"views":703,"_links":{"self":[{"href":"https:\/\/cadredidactice.ub.ro\/gavrilalucian\/wp-json\/wp\/v2\/posts\/949","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cadredidactice.ub.ro\/gavrilalucian\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cadredidactice.ub.ro\/gavrilalucian\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cadredidactice.ub.ro\/gavrilalucian\/wp-json\/wp\/v2\/users\/271"}],"replies":[{"embeddable":true,"href":"https:\/\/cadredidactice.ub.ro\/gavrilalucian\/wp-json\/wp\/v2\/comments?post=949"}],"version-history":[{"count":0,"href":"https:\/\/cadredidactice.ub.ro\/gavrilalucian\/wp-json\/wp\/v2\/posts\/949\/revisions"}],"wp:attachment":[{"href":"https:\/\/cadredidactice.ub.ro\/gavrilalucian\/wp-json\/wp\/v2\/media?parent=949"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cadredidactice.ub.ro\/gavrilalucian\/wp-json\/wp\/v2\/categories?post=949"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cadredidactice.ub.ro\/gavrilalucian\/wp-json\/wp\/v2\/tags?post=949"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}