{"id":1639,"date":"2026-09-08T08:07:49","date_gmt":"2026-09-08T08:07:49","guid":{"rendered":"https:\/\/maroczain.com\/scolaire.maroczain.com\/?page_id=1639"},"modified":"2026-09-08T08:07:49","modified_gmt":"2026-09-08T08:07:49","slug":"cnc-sciences-industrielles-mza-prepa-excellence","status":"publish","type":"page","link":"https:\/\/maroczain.com\/scolaire.maroczain.com\/cnc-sciences-industrielles-mza-prepa-excellence\/","title":{"rendered":"CNC Sciences Industrielles \u2014 MZA Pr\u00e9pa Excellence."},"content":{"rendered":"\n<div id=\"mza-cnc-si\">\n\n<style>\n#mza-cnc-si,#mza-cnc-si *{box-sizing:border-box}\n#mza-cnc-si{\n --navy:#06172c;--blue:#0d416d;--gold:#c99a36;--gold2:#efd68c;\n --paper:#f5f6f8;--text:#18283a;--muted:#687789;--line:#dfe5eb;\n font-family:Arial,Helvetica,sans-serif;background:var(--paper);color:var(--text)\n}\n#mza-cnc-si a{text-decoration:none;color:inherit}\n#mza-cnc-si .wrap{max-width:1200px;margin:auto;padding:0 24px}\n#mza-cnc-si section{padding:68px 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h2{color:#fff}\n#mza-cnc-si .cta p{\n max-width:780px;margin:0 auto 22px;color:#cfdae4;line-height:1.7\n}\n\n@media(max-width:900px){\n #mza-cnc-si .grid,#mza-cnc-si .grid3,\n #mza-cnc-si .process{grid-template-columns:1fr}\n}\n<\/style>\n\n<header class=\"hero\">\n<div class=\"wrap\">\n\n<span class=\"badge\">MZA PR\u00c9PA EXCELLENCE \u2022 CNC SCIENCES INDUSTRIELLES<\/span>\n\n<h1>Sciences Industrielles<br>CNC<\/h1>\n\n<p class=\"lead\">\nUn espace de pr\u00e9paration intensive aux syst\u00e8mes techniques :\nanalyse fonctionnelle, cin\u00e9matique, statique, dynamique,\ncha\u00eenes d\u2019\u00e9nergie et d\u2019information, automatique, asservissements,\nmod\u00e9lisation et strat\u00e9gie concours.\n<\/p>\n\n<div class=\"actions\">\n<a href=\"#programme\" class=\"btn gold\">\ud83d\udcda PROGRAMME<\/a>\n<a href=\"#problems\" class=\"btn glass\">\ud83e\udde9 SYSTEM LAB<\/a>\n<a href=\"#speed\" class=\"btn glass\">\u23f1 SPEED LAB<\/a>\n<a href=\"#blanc\" class=\"btn glass\">\ud83c\udfc6 CONCOURS BLANC<\/a>\n<a href=\"#diagnostic\" class=\"btn glass\">\u2753 DIAGNOSTIC<\/a>\n<\/div>\n\n<\/div>\n<\/header>\n\n<section id=\"programme\">\n<div class=\"wrap\">\n\n<div class=\"head\">\n<span class=\"kicker\">CNC SI MASTER MAP<\/span>\n<h2>Les grands domaines \u00e0 ma\u00eetriser.<\/h2>\n<\/div>\n\n<div class=\"grid3\">\n\n<div class=\"card\">\n<h3>01 \u2022 Analyse fonctionnelle<\/h3>\n<p>Besoin, fonctions de service, contraintes, exigences et architecture syst\u00e8me.<\/p>\n<\/div>\n\n<div class=\"card\">\n<h3>02 \u2022 Cha\u00eene d\u2019\u00e9nergie<\/h3>\n<p>Alimenter, distribuer, convertir, transmettre et agir.<\/p>\n<\/div>\n\n<div class=\"card\">\n<h3>03 \u2022 Cha\u00eene d\u2019information<\/h3>\n<p>Acqu\u00e9rir, traiter, communiquer et commander.<\/p>\n<\/div>\n\n<div class=\"card\">\n<h3>04 \u2022 Cin\u00e9matique<\/h3>\n<p>Liaisons, mouvements, vitesses, acc\u00e9l\u00e9rations et m\u00e9canismes.<\/p>\n<\/div>\n\n<div class=\"card\">\n<h3>05 \u2022 Statique<\/h3>\n<p>Actions m\u00e9caniques, torseurs et conditions d\u2019\u00e9quilibre.<\/p>\n<\/div>\n\n<div class=\"card\">\n<h3>06 \u2022 Dynamique<\/h3>\n<p>Principe fondamental, inertie, \u00e9nergie et mouvement.<\/p>\n<\/div>\n\n<div class=\"card\">\n<h3>07 \u2022 Mod\u00e9lisation<\/h3>\n<p>Sch\u00e9mas-blocs, fonctions de transfert et mod\u00e8les multi-physiques.<\/p>\n<\/div>\n\n<div class=\"card\">\n<h3>08 \u2022 Automatique<\/h3>\n<p>Boucle ouverte, boucle ferm\u00e9e, stabilit\u00e9, pr\u00e9cision et rapidit\u00e9.<\/p>\n<\/div>\n\n<div class=\"card\">\n<h3>09 \u2022 Strat\u00e9gie CNC<\/h3>\n<p>Lecture du syst\u00e8me, hypoth\u00e8ses, calculs, validation et r\u00e9daction technique.<\/p>\n<\/div>\n\n<\/div>\n<\/div>\n<\/section>\n\n<section class=\"dark\">\n<div class=\"wrap\">\n\n<div class=\"head\">\n<span class=\"kicker\" style=\"color:#efd68c\">MZA CNC SI ENGINE<\/span>\n<h2>Six r\u00e9flexes pour analyser un syst\u00e8me.<\/h2>\n<\/div>\n\n<div class=\"process\">\n<div><b>01<\/b><span>BESOIN<\/span><\/div>\n<div><b>02<\/b><span>SYST\u00c8ME<\/span><\/div>\n<div><b>03<\/b><span>MOD\u00c8LE<\/span><\/div>\n<div><b>04<\/b><span>LOIS<\/span><\/div>\n<div><b>05<\/b><span>CALCUL<\/span><\/div>\n<div><b>06<\/b><span>VALIDATION<\/span><\/div>\n<\/div>\n\n<\/div>\n<\/section>\n\n<section>\n<div class=\"wrap\">\n\n<div class=\"head\">\n<span class=\"kicker\">M\u00c9THODE SI<\/span>\n<h2>Comprendre le syst\u00e8me avant de calculer.<\/h2>\n<\/div>\n\n<div class=\"grid\">\n\n<div class=\"card\">\n<h3>Rep\u00e9rer la fonction principale<\/h3>\n<p>Que doit r\u00e9aliser le syst\u00e8me et avec quelles performances ?<\/p>\n<\/div>\n\n<div class=\"card\">\n<h3>Identifier les sous-syst\u00e8mes<\/h3>\n<p>Capteur, commande, actionneur, transmission, effecteur.<\/p>\n<\/div>\n\n<div class=\"card\">\n<h3>Construire le mod\u00e8le<\/h3>\n<p>Sch\u00e9ma cin\u00e9matique, bloc fonctionnel, loi entr\u00e9e-sortie.<\/p>\n<\/div>\n\n<div class=\"card\">\n<h3>Valider<\/h3>\n<p>Comparer mod\u00e8le, r\u00e9sultat attendu et contraintes du cahier des charges.<\/p>\n<\/div>\n\n<\/div>\n<\/div>\n<\/section>\n\n<section id=\"problems\" style=\"background:#efede7\">\n<div class=\"wrap\">\n\n<div class=\"head\">\n<span class=\"kicker\">SYSTEM LAB<\/span>\n<h2>Probl\u00e8mes type CNC Sciences Industrielles.<\/h2>\n<\/div>\n\n<div class=\"exercise\">\n<span class=\"level\">CIN\u00c9MATIQUE<\/span>\n<h3>Mission 1 \u2014 Bras robotis\u00e9<\/h3>\n\n<p>\nUn bras plan comporte deux solides articul\u00e9s par deux liaisons pivot.\n<\/p>\n\n<ol>\n<li>construire le sch\u00e9ma cin\u00e9matique minimal ;<\/li>\n<li>identifier les param\u00e8tres de position ;<\/li>\n<li>exprimer la position de l\u2019effecteur ;<\/li>\n<li>d\u00e9terminer sa vitesse ;<\/li>\n<li>\u00e9tudier une configuration singuli\u00e8re ;<\/li>\n<li>interpr\u00e9ter la mobilit\u00e9 du m\u00e9canisme.<\/li>\n<\/ol>\n\n<button type=\"button\" class=\"btn gold\" onclick=\"mzaCncSiHint('si1')\">\ud83d\udca1 INDICE<\/button>\n<div id=\"si1\" class=\"hint\">\nChoisissez un rep\u00e8re par solide et \u00e9crivez la position de l\u2019effecteur comme somme de vecteurs g\u00e9om\u00e9triques.\n<\/div>\n<\/div>\n\n<div class=\"exercise\">\n<span class=\"level\">STATIQUE + DYNAMIQUE<\/span>\n<h3>Mission 2 \u2014 Syst\u00e8me de levage<\/h3>\n\n<p>\nUne plateforme est entra\u00een\u00e9e par un moteur \u00e0 travers un r\u00e9ducteur et un tambour.\n<\/p>\n\n<ol>\n<li>faire le bilan des actions m\u00e9caniques ;<\/li>\n<li>d\u00e9terminer le couple statique requis ;<\/li>\n<li>prendre en compte le rendement de transmission ;<\/li>\n<li>calculer le couple en phase d\u2019acc\u00e9l\u00e9ration ;<\/li>\n<li>\u00e9valuer la puissance m\u00e9canique ;<\/li>\n<li>v\u00e9rifier le dimensionnement du moteur.<\/li>\n<\/ol>\n\n<button type=\"button\" class=\"btn gold\" onclick=\"mzaCncSiHint('si2')\">\ud83d\udca1 INDICE<\/button>\n<div id=\"si2\" class=\"hint\">\nDistinguez clairement le cas d\u2019\u00e9quilibre du cas acc\u00e9l\u00e9r\u00e9 : le couple demand\u00e9 n\u2019est pas le m\u00eame.\n<\/div>\n<\/div>\n\n<div class=\"exercise\">\n<span class=\"level\">AUTOMATIQUE<\/span>\n<h3>Mission 3 \u2014 Asservissement de position<\/h3>\n\n<p>\nUn moteur commande la position d\u2019un axe avec retour par capteur.\n<\/p>\n\n<ol>\n<li>identifier entr\u00e9e, sortie et consigne ;<\/li>\n<li>construire le sch\u00e9ma-blocs ;<\/li>\n<li>\u00e9tablir la fonction de transfert en boucle ferm\u00e9e ;<\/li>\n<li>\u00e9tudier la pr\u00e9cision statique ;<\/li>\n<li>discuter la rapidit\u00e9 ;<\/li>\n<li>analyser qualitativement la stabilit\u00e9.<\/li>\n<\/ol>\n\n<button type=\"button\" class=\"btn gold\" onclick=\"mzaCncSiHint('si3')\">\ud83d\udca1 INDICE<\/button>\n<div id=\"si3\" class=\"hint\">\nCommencez par la cha\u00eene directe puis introduisez le retour capteur avant d\u2019utiliser la formule de boucle ferm\u00e9e.\n<\/div>\n<\/div>\n\n<\/div>\n<\/section>\n\n<section id=\"speed\" class=\"dark\">\n<div class=\"wrap\">\n\n<div class=\"head\">\n<span class=\"kicker\" style=\"color:#efd68c\">SPEED LAB<\/span>\n<h2>10 minutes \u2014 6 r\u00e9flexes SI.<\/h2>\n<\/div>\n\n<div class=\"timer\">\n<div style=\"font-size:11px;font-weight:900;color:#987023\">TEMPS RESTANT<\/div>\n<div id=\"cncSiTimer\" class=\"timerDisplay\">10:00<\/div>\n\n<div class=\"actions\" style=\"justify-content:center\">\n<button type=\"button\" class=\"btn gold\" onclick=\"mzaStartCncSiTimer()\">\u25b6 D\u00c9MARRER<\/button>\n<button type=\"button\" class=\"btn\" style=\"background:#06172c;color:#fff\" onclick=\"mzaResetCncSiTimer()\">\u21bb RESET<\/button>\n<\/div>\n<\/div>\n\n<div style=\"height:20px\"><\/div>\n\n<div class=\"grid3\">\n\n<div class=\"card\">\n<h3>01<\/h3>\n<p>Une liaison pivot autorise combien de mobilit\u00e9 relative dans le mod\u00e8le id\u00e9al 3D ?<\/p>\n<\/div>\n\n<div class=\"card\">\n<h3>02<\/h3>\n<p>Un r\u00e9ducteur augmente g\u00e9n\u00e9ralement couple ou vitesse en sortie ?<\/p>\n<\/div>\n\n<div class=\"card\">\n<h3>03<\/h3>\n<p>Une boucle ferm\u00e9e introduit quel principe essentiel ?<\/p>\n<\/div>\n\n<div class=\"card\">\n<h3>04<\/h3>\n<p>Pour un solide en \u00e9quilibre, que doit v\u00e9rifier le torseur r\u00e9sultant des actions ?<\/p>\n<\/div>\n\n<div class=\"card\">\n<h3>05<\/h3>\n<p>Une r\u00e9ponse tr\u00e8s rapide mais fortement oscillante r\u00e9v\u00e8le quel compromis ?<\/p>\n<\/div>\n\n<div class=\"card\">\n<h3>06<\/h3>\n<p>Un mod\u00e8le ne respecte pas le cahier des charges : que faut-il conclure ?<\/p>\n<\/div>\n\n<\/div>\n<\/div>\n<\/section>\n\n<section>\n<div class=\"wrap\">\n\n<div class=\"head\">\n<span class=\"kicker\">FORMULES ET MOD\u00c8LES CL\u00c9S<\/span>\n<h2>Les outils \u00e0 mobiliser vite.<\/h2>\n<\/div>\n\n<div class=\"grid\">\n\n<div class=\"card\">\n<h3>\u00c9quilibre statique<\/h3>\n<div class=\"formula\">\u03a3F = 0 &nbsp;&nbsp; et &nbsp;&nbsp; \u03a3M = 0<\/div>\n<p>\u00c0 appliquer au syst\u00e8me correctement isol\u00e9.<\/p>\n<\/div>\n\n<div class=\"card\">\n<h3>Dynamique<\/h3>\n<div class=\"formula\">\u03a3F = m\u00b7a<\/div>\n<p>Ou formulation adapt\u00e9e au solide avec moment dynamique.<\/p>\n<\/div>\n\n<div class=\"card\">\n<h3>Puissance<\/h3>\n<div class=\"formula\">P = C\u00b7\u03c9<\/div>\n<p>Pour une action m\u00e9canique de rotation.<\/p>\n<\/div>\n\n<div class=\"card\">\n<h3>Boucle ferm\u00e9e<\/h3>\n<div class=\"formula\">H<sub>BF<\/sub> = G \/ (1 + G\u00b7H)<\/div>\n<p>Pour un retour n\u00e9gatif dans la convention usuelle.<\/p>\n<\/div>\n\n<\/div>\n<\/div>\n<\/section>\n\n<section id=\"blanc\" style=\"background:#efede7\">\n<div class=\"wrap\">\n\n<div class=\"head\">\n<span class=\"kicker\">CONCOURS BLANC 01<\/span>\n<h2>Syst\u00e8me automatis\u00e9 de tri industriel.<\/h2>\n<\/div>\n\n<div class=\"card\">\n\n<h3>Contexte<\/h3>\n<p>\nUn convoyeur intelligent transporte des pi\u00e8ces vers plusieurs postes.\nUn capteur d\u00e9tecte les pi\u00e8ces, un automate traite l\u2019information\net un actionneur oriente les pi\u00e8ces vers la bonne sortie.\n<\/p>\n\n<h3>Partie A \u2014 Analyse fonctionnelle<\/h3>\n<ol>\n<li>identifier la fonction principale ;<\/li>\n<li>d\u00e9finir deux contraintes ;<\/li>\n<li>\u00e9tablir la cha\u00eene d\u2019information ;<\/li>\n<li>\u00e9tablir la cha\u00eene d\u2019\u00e9nergie ;<\/li>\n<li>identifier les flux \u00e9chang\u00e9s.<\/li>\n<\/ol>\n\n<h3>Partie B \u2014 M\u00e9canique<\/h3>\n<ol>\n<li>mod\u00e9liser la transmission du convoyeur ;<\/li>\n<li>calculer la vitesse lin\u00e9aire ;<\/li>\n<li>d\u00e9terminer le couple requis ;<\/li>\n<li>estimer la puissance moteur ;<\/li>\n<li>prendre en compte le rendement.<\/li>\n<\/ol>\n\n<h3>Partie C \u2014 Automatique<\/h3>\n<ol>\n<li>mod\u00e9liser la boucle de vitesse ;<\/li>\n<li>\u00e9tablir le sch\u00e9ma-blocs ;<\/li>\n<li>d\u00e9terminer la fonction de transfert ;<\/li>\n<li>\u00e9tudier la pr\u00e9cision ;<\/li>\n<li>discuter stabilit\u00e9 et rapidit\u00e9.<\/li>\n<\/ol>\n\n<h3>Partie D \u2014 Validation<\/h3>\n<ol>\n<li>comparer le temps de r\u00e9ponse au cahier des charges ;<\/li>\n<li>v\u00e9rifier la puissance disponible ;<\/li>\n<li>identifier un risque de saturation ;<\/li>\n<li>proposer une am\u00e9lioration ;<\/li>\n<li>r\u00e9diger une conclusion technique.<\/li>\n<\/ol>\n\n<div class=\"actions\">\n<button type=\"button\" class=\"btn gold\" onclick=\"mzaCncSiHint('sib1')\">\ud83c\udfaf STRAT\u00c9GIE<\/button>\n<button type=\"button\" class=\"btn\" style=\"background:#06172c;color:#fff\" onclick=\"mzaCncSiHint('sib2')\">\ud83e\udde0 PLAN D&#8217;ATTAQUE<\/button>\n<\/div>\n\n<div id=\"sib1\" class=\"hint\">\nCommencez par reconstruire l\u2019architecture globale avant les calculs : capteur \u2192 traitement \u2192 commande \u2192 actionneur \u2192 m\u00e9canisme.\n<\/div>\n\n<div id=\"sib2\" class=\"hint\">\nTraitez d\u2019abord les relations entr\u00e9e-sortie directes, puis seulement les mod\u00e8les dynamiques et la boucle ferm\u00e9e.\n<\/div>\n\n<\/div>\n<\/div>\n<\/section>\n\n<section>\n<div class=\"wrap\">\n\n<div class=\"head\">\n<span class=\"kicker\">ERROR DNA<\/span>\n<h2>Les erreurs typiques en SI.<\/h2>\n<\/div>\n\n<div class=\"grid\">\n\n<div class=\"card\">\n<h3>Syst\u00e8me mal isol\u00e9<\/h3>\n<p>Les actions m\u00e9caniques deviennent incoh\u00e9rentes.<\/p>\n<\/div>\n\n<div class=\"card\">\n<h3>Liaison mal mod\u00e9lis\u00e9e<\/h3>\n<p>La mobilit\u00e9 du m\u00e9canisme est fausse d\u00e8s le sch\u00e9ma cin\u00e9matique.<\/p>\n<\/div>\n\n<div class=\"card\">\n<h3>Rapport de transmission invers\u00e9<\/h3>\n<p>Erreur fr\u00e9quente entre vitesse, couple et rapport.<\/p>\n<\/div>\n\n<div class=\"card\">\n<h3>Rendement oubli\u00e9<\/h3>\n<p>La puissance r\u00e9elle n\u00e9cessaire est sous-estim\u00e9e.<\/p>\n<\/div>\n\n<div class=\"card\">\n<h3>Retour mal sign\u00e9<\/h3>\n<p>Une erreur dans le signe de boucle change totalement le mod\u00e8le.<\/p>\n<\/div>\n\n<div class=\"card\">\n<h3>Validation absente<\/h3>\n<p>Un calcul seul ne suffit pas : il faut v\u00e9rifier le cahier des charges.<\/p>\n<\/div>\n\n<\/div>\n<\/div>\n<\/section>\n\n<section class=\"dark\">\n<div class=\"wrap\">\n\n<div class=\"head\">\n<span class=\"kicker\" style=\"color:#efd68c\">MZA SI CHECK<\/span>\n<h2>Avant de quitter une question.<\/h2>\n<\/div>\n\n<div class=\"process\">\n<div><b>A<\/b><span>SYST\u00c8ME<\/span><\/div>\n<div><b>B<\/b><span>LIAISONS<\/span><\/div>\n<div><b>C<\/b><span>FLUX<\/span><\/div>\n<div><b>D<\/b><span>MOD\u00c8LE<\/span><\/div>\n<div><b>E<\/b><span>UNIT\u00c9S<\/span><\/div>\n<div><b>F<\/b><span>CDC<\/span><\/div>\n<\/div>\n\n<\/div>\n<\/section>\n\n<section id=\"diagnostic\">\n<div class=\"wrap\">\n\n<div class=\"head\">\n<span class=\"kicker\">DIAGNOSTIC CNC SI<\/span>\n<h2>Testez vos r\u00e9flexes syst\u00e8me.<\/h2>\n<p>Le score s&#8217;affiche sans r\u00e9v\u00e9ler la correction.<\/p>\n<\/div>\n\n<div class=\"qcm\">\n<form id=\"cncSiQuiz\">\n\n<div class=\"question\">\n<strong>1. Une liaison pivot id\u00e9ale autorise principalement :<\/strong>\n<label><input type=\"radio\" name=\"siq1\" value=\"1\"> une rotation relative<\/label>\n<label><input type=\"radio\" name=\"siq1\" value=\"0\"> trois translations libres<\/label>\n<label><input type=\"radio\" name=\"siq1\" value=\"0\"> aucune mobilit\u00e9<\/label>\n<label><input type=\"radio\" name=\"siq1\" value=\"0\"> deux rotations et une translation<\/label>\n<\/div>\n\n<div class=\"question\">\n<strong>2. Un r\u00e9ducteur m\u00e9canique sert g\u00e9n\u00e9ralement \u00e0 :<\/strong>\n<label><input type=\"radio\" name=\"siq2\" value=\"1\"> diminuer la vitesse et augmenter le couple<\/label>\n<label><input type=\"radio\" name=\"siq2\" value=\"0\"> augmenter vitesse et diminuer couple dans tous les cas<\/label>\n<label><input type=\"radio\" name=\"siq2\" value=\"0\"> supprimer tout rendement<\/label>\n<label><input type=\"radio\" name=\"siq2\" value=\"0\"> supprimer la puissance m\u00e9canique<\/label>\n<\/div>\n\n<div class=\"question\">\n<strong>3. Une boucle ferm\u00e9e utilise :<\/strong>\n<label><input type=\"radio\" name=\"siq3\" value=\"1\"> une information de retour sur la sortie<\/label>\n<label><input type=\"radio\" name=\"siq3\" value=\"0\"> uniquement la consigne<\/label>\n<label><input type=\"radio\" name=\"siq3\" value=\"0\"> aucun capteur<\/label>\n<label><input type=\"radio\" name=\"siq3\" value=\"0\"> aucun comparateur<\/label>\n<\/div>\n\n<div class=\"question\">\n<strong>4. En \u00e9quilibre statique :<\/strong>\n<label><input type=\"radio\" name=\"siq4\" value=\"1\"> la r\u00e9sultante et le moment r\u00e9sultant doivent \u00eatre nuls<\/label>\n<label><input type=\"radio\" name=\"siq4\" value=\"0\"> seule la vitesse doit \u00eatre nulle<\/label>\n<label><input type=\"radio\" name=\"siq4\" value=\"0\"> le couple moteur est toujours nul<\/label>\n<label><input type=\"radio\" name=\"siq4\" value=\"0\"> aucune force ext\u00e9rieure n&#8217;existe<\/label>\n<\/div>\n\n<div class=\"question\">\n<strong>5. La puissance de rotation s&#8217;\u00e9crit :<\/strong>\n<label><input type=\"radio\" name=\"siq5\" value=\"1\"> P=C\u03c9<\/label>\n<label><input type=\"radio\" name=\"siq5\" value=\"0\"> P=C\/\u03c9<\/label>\n<label><input type=\"radio\" name=\"siq5\" value=\"0\"> P=C+\u03c9<\/label>\n<label><input type=\"radio\" name=\"siq5\" value=\"0\"> P=\u03c9\/C<\/label>\n<\/div>\n\n<div class=\"question\">\n<strong>6. Apr\u00e8s un calcul de dimensionnement, il faut :<\/strong>\n<label><input type=\"radio\" name=\"siq6\" value=\"1\"> comparer le r\u00e9sultat au cahier des charges<\/label>\n<label><input type=\"radio\" name=\"siq6\" value=\"0\"> arr\u00eater sans interpr\u00e9tation<\/label>\n<label><input type=\"radio\" name=\"siq6\" value=\"0\"> supprimer les unit\u00e9s<\/label>\n<label><input type=\"radio\" name=\"siq6\" value=\"0\"> ignorer les marges de s\u00e9curit\u00e9<\/label>\n<\/div>\n\n<button type=\"button\" class=\"btn gold\" onclick=\"mzaCncSiScore()\">\nVALIDER MON DIAGNOSTIC\n<\/button>\n\n<\/form>\n\n<div id=\"cncSiResult\"><\/div>\n<\/div>\n\n<\/div>\n<\/section>\n\n<section>\n<div class=\"wrap\">\n\n<div class=\"cta\">\n\n<h2>CNC Sciences Industrielles \u2014 Mode Concours<\/h2>\n\n<p>\nL&#8217;\u00e9l\u00e8ve apprend \u00e0 passer rapidement du syst\u00e8me r\u00e9el au mod\u00e8le,\ndu mod\u00e8le aux \u00e9quations, puis des \u00e9quations \u00e0 une validation\npar rapport au cahier des charges.\n<\/p>\n\n<div class=\"actions\" style=\"justify-content:center\">\n<a href=\"#problems\" class=\"btn gold\">\ud83e\udde9 SYSTEM LAB<\/a>\n<a href=\"#speed\" class=\"btn glass\">\u23f1 SPEED LAB<\/a>\n<a href=\"#blanc\" class=\"btn glass\">\ud83c\udfc6 CONCOURS BLANC<\/a>\n<\/div>\n\n<\/div>\n<\/div>\n<\/section>\n\n<script>\nfunction mzaCncSiHint(id){\n const el=document.getElementById(id);\n if(!el)return;\n el.style.display=el.style.display===\"block\" ? \"none\" : \"block\";\n}\n\nlet cncSiSeconds=600;\nlet cncSiInterval=null;\n\nfunction mzaRenderCncSiTimer(){\n const el=document.getElementById(\"cncSiTimer\");\n if(!el)return;\n const m=Math.floor(cncSiSeconds\/60);\n const s=cncSiSeconds%60;\n el.textContent=String(m).padStart(2,\"0\")+\":\"+String(s).padStart(2,\"0\");\n}\n\nfunction mzaStartCncSiTimer(){\n if(cncSiInterval)return;\n cncSiInterval=setInterval(function(){\n   if(cncSiSeconds>0){\n     cncSiSeconds--;\n     mzaRenderCncSiTimer();\n   }else{\n     clearInterval(cncSiInterval);\n     cncSiInterval=null;\n     const el=document.getElementById(\"cncSiTimer\");\n     if(el)el.textContent=\"TERMIN\u00c9\";\n   }\n },1000);\n}\n\nfunction mzaResetCncSiTimer(){\n clearInterval(cncSiInterval);\n cncSiInterval=null;\n cncSiSeconds=600;\n mzaRenderCncSiTimer();\n}\n\nfunction mzaCncSiScore(){\n const form=document.getElementById(\"cncSiQuiz\");\n const result=document.getElementById(\"cncSiResult\");\n\n let score=0;\n let complete=true;\n\n [\"siq1\",\"siq2\",\"siq3\",\"siq4\",\"siq5\",\"siq6\"].forEach(function(name){\n   const answer=form.querySelector('input[name=\"'+name+'\"]:checked');\n   if(!answer){\n     complete=false;\n   }else{\n     score+=Number(answer.value);\n   }\n });\n\n result.style.display=\"block\";\n\n if(!complete){\n   result.innerHTML=\"<strong>R\u00e9pondez aux 6 questions avant de valider.<\/strong>\";\n   return;\n }\n\n const pct=Math.round(score\/6*100);\n\n let level=\"Pr\u00e9paration CNC SI \u00e0 renforcer\";\n if(pct>=50)level=\"Fondations syst\u00e8mes acquises\";\n if(pct>=67)level=\"Bon niveau CNC SI\";\n if(pct>=84)level=\"Tr\u00e8s bon niveau CNC SI\";\n if(pct===100)level=\"Excellent profil syst\u00e8mes\";\n\n result.innerHTML=\n \"<strong style='font-size:30px;color:#efd68c'>\"+pct+\"%<\/strong>\"+\n \"<p><b>\"+level+\"<\/b><\/p>\"+\n \"<p>Score : \"+score+\" \/ 6<\/p>\"+\n \"<p>Les r\u00e9ponses correctes et la correction d\u00e9taill\u00e9e restent masqu\u00e9es.<\/p>\";\n}\n\nmzaRenderCncSiTimer();\n<\/script>\n\n<\/div>\n&#8220;`\n","protected":false},"excerpt":{"rendered":"<p>MZA PR\u00c9PA EXCELLENCE \u2022 CNC SCIENCES INDUSTRIELLES Sciences IndustriellesCNC Un espace de pr\u00e9paration intensive aux syst\u00e8mes techniques : analyse fonctionnelle, cin\u00e9matique, statique, dynamique, cha\u00eenes d\u2019\u00e9nergie et d\u2019information, automatique, asservissements, mod\u00e9lisation et strat\u00e9gie concours. \ud83d\udcda PROGRAMME \ud83e\udde9 SYSTEM LAB \u23f1 SPEED LAB \ud83c\udfc6 CONCOURS BLANC \u2753 DIAGNOSTIC CNC SI MASTER MAP Les grands domaines \u00e0 ma\u00eetriser. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1639","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/maroczain.com\/scolaire.maroczain.com\/wp-json\/wp\/v2\/pages\/1639","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/maroczain.com\/scolaire.maroczain.com\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/maroczain.com\/scolaire.maroczain.com\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/maroczain.com\/scolaire.maroczain.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/maroczain.com\/scolaire.maroczain.com\/wp-json\/wp\/v2\/comments?post=1639"}],"version-history":[{"count":1,"href":"https:\/\/maroczain.com\/scolaire.maroczain.com\/wp-json\/wp\/v2\/pages\/1639\/revisions"}],"predecessor-version":[{"id":1641,"href":"https:\/\/maroczain.com\/scolaire.maroczain.com\/wp-json\/wp\/v2\/pages\/1639\/revisions\/1641"}],"wp:attachment":[{"href":"https:\/\/maroczain.com\/scolaire.maroczain.com\/wp-json\/wp\/v2\/media?parent=1639"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}