|
C) jismlar deformatsiyalanganda hosil bo‘ladigan kuchga aytiladi
|
| bet | 20/34 | | Sana | 19.12.2023 | | Hajmi | 2,48 Mb. | | #124060 |
Bog'liq Mexanika jamlanma 1C) jismlar deformatsiyalanganda hosil bo‘ladigan kuchga aytiladi.
D) jismning ta’sirida tayanchga va osmaga ta’sir qiluvchi kuchiga aytiladi.
7. Nisbiy cho’zilishi 0,001 ga teng bo’lgan jez sterjenda 108 Pa mexanik kuchlanish hosil bo’lsa, jezning elastiklik moduli qanday( GPa)?
A) 1 B) 0,1 C) 100 D) 10
8. Uzuligi 20 sm ga teng bo’lgsn simni malum bir kuch tasirida 2 sm ga cho’zildi.
Simning nisbiy uzayish deformatsiyasi nimaga teng?
A) 0,1 B) 40 C) 18 D) 0,2
9. Nisbiy uzayish deformatsiyasi 1 ga teng bo’lgan simning kuch tasir qilishdan oldingi uzunligi 17 sm ga teng edi. U kuch tasirida qanchagacha cho’zilgan.
A) 17 sm B) 30 sm C) 34 sm D) 0,17 sm
10. Mexanik kuchlanishni qaysi formula yordamida hisoblaymiz.
A) B) C) D)
11. Kondalang yuzasi 35 sm2 ga teng bolgan metall bolagini 125 N kuch bilan cho’zsak unda hosil bo’lgan mexanik kuchlanish qanchaga teng bo’ladi.
A) 3.57 Pa B) 4375 Pa C) 4,375 Pa D) 43,75 Pa
12. Prujinani 100 N kuch tasirida 2 sm ga jo’zligan bo’lsa elastiklik kuchin toping?
A) 200 N B) 50 N C) 2 N D) 100 N
13. Agar prujinaning bikrligi 1kN/m bo’lgan simning yuzasi 40 mm2 ga teng, uzuligi 1m ga teng bo’lsa yung modulini toping.
A) 25 Pa B) 25 MPa C) 25 kPa D) 250 Pa
14. Yung moduli 7 GPa bo’igan prujinaning nisbiy uzayish deformatsiyasi 0,03 ga teng bo’lsa mexanik kuchlanishni toping.
A) 21 GPa B) 21 kPa C) 210 kPa D) 210 Pa
15. Prujinaning bikrligi 100 kN/m ga teng. Uning yarmining bikrligi qanchaga teng.
A) 200 kN/m B) 50 kN/m C) 100 kN/m D) 200 N/m
16. 100 N/m va 150 N/m bo’lgan prujinalar ketma- ket ulansa, hosil bo’lgan prujinaning bikrligini toping.
A) 250 N/m B) 50 N/m C) 60 N/m D) 70 N/m
17. Bikrliklar k1 va k2 bo’lgan prujinalarni parallel ulasak umumiy bikrlik qachaga teng bo’ladi.
A) k1/k2 B) k1*k2 C) k1+k2 D) k1-k2
18. 300 kN/m bo’lgan prujinaning uchdan birini qirqib olsak uning bikrligi qancha bo’ladi.
|
| |
