Elektr tarmog'ning qutbshiligi: Bu nima?
Endi AC zaryad manbalari bilan ega bo'lgan elektr tarmogini ko'rib chiqaylik. Bu yerda, ekvivalent zaryadni topish uchun qattiqlik, polus va fazani ishlatamiz.
Birinchi suratda, ikkala manbada ham polus bir xil. Shuning uchun, ekvivalent zaryad ikkalasining yig'indisi bo'ladi. Biroq, bu polus shakli—
![\[ V_1 = 20 \angle 0^\circ \]](https://www.electrical4u.com/wp-content/ql-cache/quicklatex.com-2f2c08cd6629a2e7536d5e9c1dc09955_l3.png?ezimgfmt=rs:89x16/rscb38/ng:webp/ngcb38 "Rendered by QuickLaTeX.com")
![\[ V_2 = 5 \angle 60^\circ \]](https://www.electrical4u.com/wp-content/ql-cache/quicklatex.com-075ba19cbb0c3ac897034e0d4b1666dc_l3.png?ezimgfmt=rs:89x16/rscb38/ng:webp/ngcb38 "Rendered by QuickLaTeX.com")
Avval, bu polus shaklini to'g'ri burchak shakliga aylantirishimiz kerak. Va natija quyidagicha bo'ladi—
![\[ V_1 = 20 + j0 \]](https://www.electrical4u.com/wp-content/ql-cache/quicklatex.com-a6eb419b488a4f26e7c0b71b556da47f_l3.png?ezimgfmt=rs:98x16/rscb38/ng:webp/ngcb38 "Rendered by QuickLaTeX.com")
![\[ V_2 = 2.5 + j4.33 \]](https://www.electrical4u.com/wp-content/ql-cache/quicklatex.com-0b67db76e96036dea77d076d48247020_l3.png?ezimgfmt=rs:126x17/rscb38/ng:webp/ngcb38 "Rendered by QuickLaTeX.com")
Endi, ekvivalent zaryad har bir X-komponent va Y-komponentlarning yig'indisi (ya'ni 
)—
![\[ V = 22.5 + j4.33 \]](https://www.electrical4u.com/wp-content/ql-cache/quicklatex.com-aa02674f4f19c5b8cdc3e2d00935162b_l3.png?ezimgfmt=rs:132x17/rscb38/ng:webp/ngcb38 "Rendered by QuickLaTeX.com")
Yana, to'g'ri burchak shaklini polus shakliga aylantiramiz va natija quyidagicha bo'ladi—
![\[ V = 22.913 \angle 10.89^\circ \]](https://www.electrical4u.com/wp-content/ql-cache/quicklatex.com-2185ebf2e079cf639e55af5013beb574_l3.png?ezimgfmt=rs:148x14/rscb38/ng:webp/ngcb38 "Rendered by QuickLaTeX.com")
Ikkinchi suratda, ikkala manbada ham poluslar teskari. Bu holatda, ekvivalent zaryad ikkalasining ayirmasi bo'ladi—
![\[ V_2 = - ( 5 \angle 60^\circ ) = 5 \angle 300^\circ \]](https://www.electrical4u.com/wp-content/ql-cache/quicklatex.com-4ec4716142bc830cf87b3af9823cd7fd_l3.png?ezimgfmt=rs:196x19/rscb38/ng:webp/ngcb38 "Rendered by QuickLaTeX.com")
Endi, ikkala 
va 
ni qo'shib, ekvivalent zaryadni topa olamiz—
![\[ V_1 = 20 \angle 0^\circ = 20 + j0 \]](https://www.electrical4u.com/wp-content/ql-cache/quicklatex.com-4a95578cf612d7256b266121b962b529_l3.png?ezimgfmt=rs:169x18/rscb38/ng:webp/ngcb38 "Rendered by QuickLaTeX.com")
![\[ V_2 = 5 \angle 300^\circ = 2.5 - j4.33 \]](https://www.electrical4u.com/wp-content/ql-cache/quicklatex.com-0f3a65324296b05d22a5daa19c9c0d65_l3.png?ezimgfmt=rs:206x18/rscb38/ng:webp/ngcb38 "Rendered by QuickLaTeX.com")
Avval, bu polus shaklini to'g'ri b
