Metrologiya, standartlashtirish va sertifikatlashtirish”


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II. Amaliy topshiriq
3 – jadvaldan o’z variantingiz nomerlari bo’yicha amaliy topshiriqlarni bajaring.
3 – jadval



2 – jadvaldagi Talabalarining

Variant nomerlari

Bajarilishi kerak bo’lgan amaliy topshiriqlar



№ 1. № 3. № 5. № 7. № 9.

1-masala: Yuqori o‘lchash chegarasi 5A bo‘lgan ampermetr shkalasining 1, 2, 3, 4, 5 A nuqtalariga mos ravishda 1,041; 2,02; 2,97; 4,01; 4,98A to‘g‘i kelsa, asbobning aniqlik klassini toping.
2-masala: Silliq yuzali chegaraviy o'lchov skobasining o'lchami mikrometrik nutromer yordamida o'lchanganda, qiymat olindi. Nutromer xatoligi 30 mkm. Xatoligi 1 mkm bo'lgan 3-darajali o'lchov me'yorlari bloki yordamida ushbu o'lcham qayta o'lchanganda uning haqiqiy o'lchami ekanligi aniqlandi. Chegaraviy o'lchov skobasining tasodifiy xatoligini aniqlang.



№ 2. № 4. № 6. № 8. № 10.

1-masala: Termostatdagi harorat shkalali, yo‘l qo‘yilishi mumkin bo‘lgan asosiy xatoligi ±4°C chegarasida bo‘lgan texnik termometr bilan o‘lchanar edi. Termometr ko‘rsatmasi ni tashkil etdi. Texnik termometr bilan bir vaqtda termostatga tekshiruvdan o‘tganligi haqida guvohnomaga ega bo‘lgan laboratoriya termometri tushirildi. Laboratoriya termometrining ko‘rsatmasi ni tashkil etdi. Guvohnoma bo‘yicha tuzatish – ni. Chiqib turgan ustun uchun tuzatish ni tashkil qiladi. Texnik termometr ko‘rsatmasidagi xatolikning amaldagi qiymati yo‘l qo‘yilishi mumkin bo‘lgan asosiy xatolikning chegarasidan oshadimi, shuni aniqlang.
2-Masala: Haroratni o‘lchovchi asbob qurilma ko‘rsatishining chegarasi dan gacha, uning aniqlik klassi . O‘lchash jarayonidagi mavjud xatolik qiymatini toping.



№ 11. № 13. № 15. № 17. № 19.

1-masala: Yuqori o‘lchash chegarasi 15A bo‘lgan ampermetr shkalasining 3, 5, 7, 9, 11, 13, 15 A nuqtalariga mos ravishda 3,01;5,03; 7,05; 9,20; 11,05; 13,89; 14,98 A to‘g‘i kelsa, asbobning aniqlik klassini toping.
2-Masala: shkalali 0,5 graduirovka sinfli XK avtomatik potensiometri bilan termo E.Yu.K ning bir marotabalik o‘lchovi o‘tkazildi. Ko‘rsatkich belgisida turibdi. belgida turgan potensiometr bilan termo E.Yu.K. o‘lchangandagi maksimal nisbiy xatolikni baholang. Ishlash sharoiti normal xolatda nisbiy xatolik asbobning ko‘rsatkichi bilan bog‘liqmi?



№ 12. № 14. № 16. № 18. № 20.

1-masala: , dan gacha temperaturada massasi m (kg) bo‘lgan jismning sovishida ajraladigan issiqlik Q(Dj) bilvosita o‘lchash asosida quyidagi ifodadan foydalanib aniqlanadi. m, , – kattaliklar bevosita o‘lchash yordamida topilib, ular uchun o‘rtacha kvadratik o‘zgarish , solishtirma issiqlik sig‘im jadvaldan olinadi. (). Issiqlikni bilvosita o‘lchashni baholash va o‘rtacha kvadratik og‘ishni , m=2.5kg , , dagi hol uchun topish kerak.
2-masala: Bosim ikki qurilma (manometr) yordamida o‘lchangan. Ularning o‘zaro eng kichik farqi topilsin. Bosim o‘lchovchi qurilmalar aniqlik klassi 0,5 va ularning ko‘rsatkichlari farqi .

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