Quiz — 6390d0ec38a47_corrigé_Serie 2-le dipole RLC-.pdf

Question 1 sur 10 20:00

[{"id":32600,"question":"Quelle est l'unité de l'inductance L dans un circuit RLC ?","option_a":"A. Farad (F)","option_b":"B. Henry (H)","option_c":"C. Ohm (Ω)","option_d":"D. Volt (V)","option_e":"","option_f":"","bonne_reponse":"b","explication":"L'inductance L s'exprime en Henry (H), unité qui mesure la capacité d'une bobine à s'opposer aux variations de courant.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"A. Farad (F)\", \"b\": \"B. Henry (H)\", \"c\": \"C. Ohm (Ω)\", \"d\": \"D. ","_debug_options_count":4},{"id":32601,"question":"Dans un circuit RLC série en régime permanent sinusoïdal, l'impédance totale est donnée par :","option_a":"A. Z = R + L + C","option_b":"B. Z = √(R² + (Lω - 1\/(Cω))²)","option_c":"C. Z = R * L * C","option_d":"D. Z = L\/(R*C)","option_e":"","option_f":"","bonne_reponse":"b","explication":"L'impédance d'un circuit RLC série est calculée par Z = √(R² + (X_L - X_C)²), où X_L = Lω et X_C = 1\/(Cω) sont les réactances inductive et capacitive.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"A. Z = R + L + C\", \"b\": \"B. Z = √(R² + (Lω - 1\/(Cω))²)\", \"c","_debug_options_count":4},{"id":32602,"question":"La résonance dans un circuit RLC série se produit lorsque :","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"La résonance se produit lorsque l'impédance est minimale, ce qui arrive lorsque X_L = X_C, soit Lω = 1\/(Cω).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":32603,"question":"Quelle est l'énergie stockée dans un condensateur de capacité C chargé sous une tension U ?","option_a":"A. E = ½ C U²","option_b":"B. E = C U","option_c":"C. E = ½ L I²","option_d":"D. E = R I²","option_e":"","option_f":"","bonne_reponse":"a","explication":"L'énergie stockée dans un condensateur est donnée par E = ½ C U², où C est la capacité et U la tension aux bornes.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"A. E = ½ C U²\", \"b\": \"B. E = C U\", \"c\": \"C. E = ½ L I²\", \"d\":","_debug_options_count":4},{"id":32604,"question":"Dans un circuit RLC série, l'énergie totale est conservée en régime permanent.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"b","explication":"En régime permanent, l'énergie est dissipée par la résistance R sous forme de chaleur, donc elle n'est pas conservée.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":32605,"question":"Quelle est la phase du courant par rapport à la tension aux bornes d'un condensateur en régime sinusoïdal ?","option_a":"A. En phase","option_b":"B. En avance de π\/2","option_c":"C. En retard de π\/2","option_d":"D. En opposition de phase","option_e":"","option_f":"","bonne_reponse":"c","explication":"Le courant est en avance de π\/2 par rapport à la tension aux bornes d'un condensateur, car i(t) = C * du(t)\/dt.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"c\", \"options\": {\"a\": \"A. En phase\", \"b\": \"B. En avance de π\/2\", \"c\": \"C. En retard de ","_debug_options_count":4},{"id":32606,"question":"La bande passante d'un circuit RLC série est définie comme :","option_a":"A. La différence entre les fréquences de coupure","option_b":"B. La fréquence de résonance","option_c":"C. Le rapport L\/C","option_d":"D. La valeur maximale de l'impédance","option_e":"","option_f":"","bonne_reponse":"a","explication":"La bande passante est la différence entre les fréquences de coupure haute et basse, définies comme les fréquences où l'amplitude chute à 1\/√2 de sa valeur maximale.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"A. La différence entre les fréquences de coupure\", \"b\": \"B. La ","_debug_options_count":4},{"id":32607,"question":"Un circuit RLC série est équivalent à un filtre passe-bas.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"b","explication":"Un circuit RLC série est un filtre passe-bande, car il laisse passer les fréquences autour de la résonance et atténue les autres.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":32608,"question":"Quelle est la relation entre la tension aux bornes d'une bobine et le courant qui la traverse ?","option_a":"A. u(t) = R i(t)","option_b":"B. u(t) = L di(t)\/dt","option_c":"C. u(t) = 1\/(C) ∫i(t)dt","option_d":"D. u(t) = i(t)\/R","option_e":"","option_f":"","bonne_reponse":"b","explication":"La tension aux bornes d'une bobine est proportionnelle à la dérivée du courant par rapport au temps : u(t) = L di(t)\/dt.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"A. u(t) = R i(t)\", \"b\": \"B. u(t) = L di(t)\/dt\", \"c\": \"C. u(t) = 1","_debug_options_count":4},{"id":32609,"question":"Dans un circuit RLC série, l'amplitude de la tension aux bornes de la résistance est maximale à la résonance.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"À la résonance, l'amplitude de la tension aux bornes de la résistance est maximale car l'impédance totale est minimale (égale à R).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4}]