
8th of class. 33-MAVZU: LABORATORIYA ISHI.
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Physics
•
8th Grade
•
Hard
Xurshid Miraxmedov
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8th of class. 33-MAVZU: LABORATORIYA ISHI. Iste'molchining elektr quvvatini aniqlash.
By Xurshid Miraxmedov
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Iste'molchining quvvatini tok kuchi va unga qo'yilgan kuchlanish orqali aniqlashni o'rganish.
Some text here about the topic of discussion.
Ishning maqsadi:
Kerakli jihozlar:
Tok manbai, iste'molchi (lampochka), ampermetr, voltmetr, kalit, ulovchi simlar.
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Ishni bajarish tartibi:
1.Tok manbai, lampochka, ampermetr, voltmetr va kalitdan iborat zanjirni yig'ing.
2.Yig'ilgan elektr zanjir sxemasini chizing.
3.Kalitni ulang va sekundomerni ishga tushiring.
4.Ampermetr va voltmetr ko'rsatkichini aniqlang va jadvalga yozing.
5.P=IU formula bilan lampochkadagi tokning quvvatini hisoblang va jadvalga yozing.
6.Kalitni uzing va ayni vaqtda, sekundomer tugmasini bosing, uni to'xtating. Lampochkani qancha t vaqt davomida yonib turganini jadvalga yozing.
Subject | Subject
Some text here about the topic of discussion
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Ishni bajarish tartibi:
7.W=IUt formula yordamida sarflangan elektr energiya miqdorini hisoblang. Natijani jadvalga yozing.
8.Tajribani 3 marta takrorlang. Natijalarni jadvalga yozing.
9.Po'rt=(P1+P2+P3)/3 ifoda orqali lampochkaning o'rtacha quvvatini hisoblang. Olingan natijani lampochkaga yozilgan quvvat bilan taqqoslang.
10.Natijalarni tahlil qiling va xulosa chiqaring.
Subject | Subject
Some text here about the topic of discussion
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T/R | I, A | U, V | P, W | P | t, s | W, J |
1 | 0,07 | 4,5 | 0,334 |
| 120 | 37,8 |
2 | 0,14 | 8,5 | 1,194 | 1,238 | 180 | 214,2 |
3 | 0,19 | 11,5 | 2,185 |
| 300 | 655,5 |
1-jadval
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Xulosa
- Demak elektr istemolchilari o`zidan tok o`tganda quvvati qanchaligi bilan farq qilar ekan.
-Elektr istemolchilarining quvvati undan o`tayotgan tok kuchining unga qo`yilgan kuchlanishga ko`paytmasidan P=IU topilar ekan.
-Manbadagi kuchlanishni oshirilganda yoki kamaytirilganda tok kuchi ham oshib kamayganligi uchun lampochkaning quvvati ham o`zgarib borar ekan.
-Lampochkaga yozilgan quvvatning qiymati bu lampochkani qancha quvvatli tokka bardosh bera olishini ko`rsatar ekan.
-O`tkazgichdan elektr toki o`tishi uchun unga elektr energiyasi sarf etilishi ya`ni ish bajarilishi zarur ekan.
-Sarflangan elektr energiyasi miqdor jihatidan elektr tokining bajargan ishiga teng A=W=IUt.
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3.Uyingizda ishlatayotgan lampochka, muzlatgich va dazmolning quvvatini yozing.
4.Uyingizdagi elektr hisoblagich 1 oy mabaynida 342 kW*h elektr energiya iste'mol qilinganini ko'rsatmoqda. Siz bir oy uchun qancha pul to'laysiz?
1.Laboratoriya ishini bajarish uchun qanday jihozlar kerak bo'ladi?
2.Elektr tokining quvvati deb nimaga aytiladi?
Ushbu berilgan savollarga javob yozing.
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8th of class. 33-MAVZU: LABORATORIYA ISHI. Iste'molchining elektr quvvatini aniqlash.
By Xurshid Miraxmedov
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