1-mavzu. (Test)

17-mavzu.(Test)

1. Balandligi 4 m bo‘lgan suv ustunining bosimini aniqlang (kPa).

A) 400 B) 40 C) 4 D) 35

2. Bosimning 2 mm sim ust. necha Pa ga teng? Simobning zichligi 13,6 103 kg/m3.

A) 280 B) 272 C) 253 D) 292

3. Qalinligi 0,5 m bo‘lgan benzin ustuni idish tubiga qanday bosim beradi (kPa)?

Benzin zichligi -800 kg/m3

A) 1 B) 2 C) 4 D) 5

4. Kub shaklidagi akvarium limmo-lim suv bilan to‘ldirilgan. Undagi suvning massasi 64 kg. Suvning akvarium tubiga bosimini adsoblab toping.

A) 2kPa B) 4kPa C) 8 k Pa D) 1kPa

5. Dengizning qanday chuqurligida gidrostatik bosim 6 MPa ga teng?

A) 500 m B) 290 m C) 1000 m D) 600 m

6. Ko‘ldagi qanday chuqurlikda bosim normal atmosfera bosimidan 3 mar­ta katta bo‘ladi (m)?

A) 35 B) 30 C) 20 D) 40

7. Ko‘lning qanday chuqurlikdagi gidrostatik bosim atmosfera bosimidan 6 marta katta bo‘ladi (m)?

A) 300 B) 150 C) 50 D) 10

8. Idishdagi bosim 300 Pa ga o‘zgarganda, unga ulangan suvli manometrning ochiq tirsagidagi suv sathi qanday masofaga siljiydi (mm)?

A) 30 B) 300 C) 15 D) 0,3

9. Gidravlik presda kichik porshenning yuzi 5 sm2, katta porshenning yuzi esa 500 sm2. Kichik porshenga 400 N kuch ta’sir etsa, kattasida 36000 N kuch yuzaga keladi. Bu press kuchdan qancha yutuq beradi?

A) 100 B) 90 C) 10 D) 80

10. Gidravlik presda kichik porshenning yuzi 3 sm2, katta porshenning yuzi esa 300 sm2. Kichik porshenga 600 N kuch ta’sir etsa, kattasida 54000 N kuch yuzaga keladi. Press porshenidagi ishqalanish kuchi nimaga teng (kN)?

A) 10 B) 6 C) 9 D) 4,8

11. Gidravlik press katta porshenining yuzi 600 sm2. Uning kichik porsheniga 120 N kuch bilan ta’sir qilib, og‘irligi 12 kN bo‘lgan yukni ko‘tarishi uchun, kichik porshenning yuzi qancha bo‘lishi kerak (sm2).

A) 10 B) 8 C) 6 D) 4

12. Gidravlik domkrat kichik porshenining yuzasi 2,88 sm2, unga ta’sir etuvchi kuch 1000 N, katta porshenning yuzasi 2880 sm2 bo‘lsa, bu domkrat qancha massali yukni ko‘tarishi mumkin bo‘ladi?

A) 10 t B) 20 t C) 120 t D) 100 t

13.Dengiz sathidan 240m balandlikda atmosfera bosimi qanchaga teng bo’ladi(mm.Hg)? P_o=760mm.Hg

A)730 B)740 C)750 D)760