elektrodinamika

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16 elektrodinamika fizika ii – 2-ma’ruza fizika kafedrasi 2018 mexanik va elektromagnit tebranishlar k.p.abduraxmanov, v.s.xamidov, m.f.raxmatullaeva 1 ma’ruza rejasi so‘nuvchi mexanik tebranishlar. tebranishlarning so‘nish koeffisienti. so‘nishning logarifmik dekrementi va tizimning aslligi. majburiy mexanik tebranishlar. majburiy elektromagnit tebranishlar. rezonans hodisasi. tok va kuchlanishning rezonansi va ularning radiotexnikada qo‘llanilishi. 2 so'nuvchi tebranishlar tebranish tizimi energiyasini sarf bo'lishi natijasida, vaqt o'tishi bilan asta-sekin tebranishning pasayishi tebranishning so'nishi deb ataladi. tebranish so'nishining sabablari mexanik tizimlarda – ishqalanish kuchi. elektr tizimlarida – issiqlik va elektromagnit to'lqinlar nurlanishiga bog'liq energiyaning yo'qolishi, hamda elektrik va magnit gisterezisi hisobiga dielektrik va ferromagnetiklarda issiqlik sarflanishi. 3 chiziqli tizim erkin so'nish tebranishlarining differentsial tenglamasi s – tebranuvchi kattalik, — so'nish koeffitsienti. 0 – tebranish tizimi erkin so'nish tebranishini tsiklik chastotasi ( = 0 bo'lganda ) differentsial tenglamaning echimi 4 kichik tebranishlar  2<<20 so'nuvchi tebranishlar amplitudasi so'nuvchi tebranishlar chastotasi so'nuvchi tebranishlar amplitudasini e marta kamayishiga ketgan vaqt oraligi relaksatsiya vaqti …

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energiya a(t) amplituda kvadratiga proportsionaldir - 7 tebranish tizimining aslligi so'nishning logarifmik dekrementini kichik qiymatlarida x ning kichik qiymatlarida 8 erkin so'nuvchi tebranishlar prujinali mayatnik tebranuvchi kontur mexanik tebranish — elastiklik kuchi va ishqalish kuchi – ta'siida m massali prujinali mayatnikning bajaradigan kichik tebranishlari. ( r – qarshilik koeffitsienti) elektromagnit tebranishlar —r qarshilik, l induktivlik va c sig'imdan iborat bo'lgan tebranish konturidagi tebranishlar. 9 erkin so'nuvchi tebranishlar prujinali mayatnik tebranish konturi tebranuvchi kattalik x muvozanat holatiga nisbatan siljishlar q zaryad tebranishning differentsial tenglamasi so'nmaydigan tebranishlarning xususiy chastotas - 0  - so'nish koeffitsienti 10 erkin so'nuvchi tebranishlar prujinali mayatnik tebranish konturi so'nuvchi tebranishlar chastotasi q - asllik tebranishlar amplitudasi tebranish qonuni 11 sinusoidal kuch ta'siridagi majburiy tebranishlar garmonik qonunlar o'zgarishidagi faktorlar ta'siri ostida sodir bo'ladigan tebranishlar majburiy tebranishlar deb ataladi. majburiy garmonik tebranishlarning ikkinchi tartibli differentsial tenglamasi  - so'nish koeffitsienti 0 – tebranishning xususiy chastotasi  - majbur qiluvchi …

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i 15 mexanik majburiy tebranishlarning differentsial tenglamasi - majbur etuvchi kuch r – qarshilik koeffitsienti k – qattiqlik koeffitsienti 0 – tebranishning xususiy chastotasi  - majbur etuvchi faktorning chastotasi 16 elektr majburiy tebranishlarning differentsial tenglamasi - majbur etuvchi faktor – tashqi eyuk yoki o'zgaruvchan kuchlanish — zaryad va qo'yilgan kuchlanish orasidagi faza siljishi q- elektr zaryadi, r – qarshilik, l- induktivlik, s - elektr sig'imi maksimal zaryad tebranish fazasi - differentsial tenglama - tenglamaning echimi 17 tok kuchining o'zgarishi zaryaddan vaqt bo'yicha birinchi xosilani olamiz tok kuchining amplitudasi yoki maksimal tok - tok va qo'yilgan kuchlanish orasidagi faza siljishi umumiy holda 18 rezonans majbur etuvchi kuch chastotasi tebranish tizimining xususiy chastotasiga yaqinlashganda majburiy tebranishlar amplitudasining birdaniga ortishi hodisasi - rezonans hodisasi deb ataladi rezonans chastotasi rezonans amplitudasi 19 rezonans majburiy tebranishlarning amplitudasi ifodasini ko'rib chiqamiz 1. majbur etuvchi kuch chastotasi nolga teng bo'lsin tebranish sodir bo'lmaydi, siljish statik deformatsiyaga …

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a fizika o'qituvchilari uchun sayt neutrino.ucoz.ru- tatu fizika kafedrasi dotsenti o.e.tigayning shaxsiy sayti. fizik.ru - tatu fizika kafedrasi katta o'qituvchisi v.s.xamidovning shaxsiy sayti. estudy.uz- tatu talabalari uchun fizikadan masofaviy ta'lim tizimi yenka.com http://phet.colorado.edu/ http://www.falstad.com/mathphysics.html http://www.quantumatomica.co.uk/download.htm http://school-collection.edu.ru 22 image1.png image2.jpeg image3.png image4.wmf image5.wmf image6.png oleobject1.bin oleobject2.bin oleobject3.bin image7.wmf image8.wmf image9.wmf image10.wmf image11.wmf image12.wmf oleobject7.bin oleobject8.bin oleobject9.bin oleobject10.bin oleobject4.bin oleobject5.bin oleobject6.bin image13.wmf image14.wmf image15.wmf oleobject11.bin oleobject12.bin oleobject13.bin image16.wmf image17.wmf image18.wmf oleobject14.bin oleobject15.bin oleobject16.bin image19.wmf image20.wmf image21.wmf image22.wmf image23.wmf image24.wmf oleobject20.bin oleobject21.bin oleobject22.bin oleobject17.bin oleobject18.bin oleobject19.bin image25.wmf image26.wmf image27.png image28.png oleobject23.bin oleobject24.bin image29.wmf image30.wmf image31.wmf image32.wmf image33.wmf image34.wmf image35.wmf image36.wmf oleobject30.bin oleobject31.bin oleobject32.bin oleobject33.bin oleobject34.bin oleobject27.bin oleobject28.bin oleobject29.bin image45.wmf image37.wmf image38.wmf image39.wmf image40.wmf image41.wmf image42.wmf image43.wmf image44.wmf oleobject38.bin oleobject39.bin oleobject40.bin oleobject41.bin oleobject42.bin oleobject43.bin oleobject44.bin oleobject35.bin oleobject36.bin oleobject37.bin image46.wmf image47.wmf oleobject45.bin oleobject46.bin image48.png image49.png image50.wmf image51.wmf oleobject47.bin oleobject48.bin image52.wmf image53.wmf image54.wmf oleobject49.bin oleobject50.bin oleobject51.bin image55.wmf image56.wmf image57.wmf image58.wmf oleobject55.bin oleobject52.bin oleobject53.bin oleobject54.bin image59.wmf image60.wmf …

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3.wmf oleobject59.bin oleobject60.bin oleobject56.bin oleobject57.bin oleobject58.bin image64.wmf image65.wmf image66.wmf image67.wmf image68.wmf image69.wmf oleobject64.bin oleobject65.bin oleobject66.bin oleobject67.bin oleobject61.bin oleobject62.bin oleobject63.bin image70.wmf image71.wmf oleobject68.bin oleobject69.bin image72.png image73.wmf image74.wmf image75.wmf image76.wmf 2 2 0 2 20 dsds s dtdt dw ++= 0 cos() t saet d wj - =+ 0 t aae d - = 22 0 wwd =- 0 cos() t xaet d wj - =+ t 0 a 1 t d = 0 () 0 ()1 () t t t tt ae at e attaee d d dd - -+- === + ( ) 0 0 (), () t t t atae attae d d - -+ = += ()1 ln () att t attn qd t ==== + () 2 ()() wt q wtwtt p = -+ 22 2 ma wku w =+= tebranuvchisistemadagienergiyazapasi q2 birdavrdavomidagienergiyayukolishi p = 22 2 0 222222() 00 2 22()22 () 22 ()() 22 2 …

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16 elektrodinamika fizika ii – 2-ma’ruza fizika kafedrasi 2018 mexanik va elektromagnit tebranishlar k.p.abduraxmanov, v.s.xamidov, m.f.raxmatullaeva 1 ma’ruza rejasi so‘nuvchi mexanik tebranishlar. tebranishlarning so‘nish koeffisienti. so‘nishning logarifmik dekrementi va tizimning aslligi. majburiy mexanik tebranishlar. majburiy elektromagnit tebranishlar. rezonans hodisasi. tok va kuchlanishning rezonansi va ularning radiotexnikada qo‘llanilishi. 2 so'nuvchi tebranishlar tebranish tizimi energiyasini sarf bo'lishi natijasida, vaqt o'tishi bilan asta-sekin tebranishning pasayishi tebranishning so'nishi deb ataladi. tebranish so'nishining sabablari mexanik tizimlarda – ishqalanish kuchi. elektr tizimlarida – issiqlik va elektromagnit to'lqinlar nurlanishiga bog'liq energiyaning yo'qolish...

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