5 Tusaalooyin Su'aalo Ku Saabsan Gudbinta Kulaylka
1. Laba ulood oo P iyo Q ah oo isku cabbir ah laakiin noocyo kala duwan oo bir ah ayaa ku lifaaqan sida ku cad sawirka hoose. Haddii isku-dhafka gudbinta kulaylka ee P uu labanlaabmo isku-dhafka gudbinta kulaylka ee Q, markaa heerkulka xadka P iyo Q waa...
A. 600 oC
B. 200 o C
C. 100 o C
D. 90 o C
E. 60 o C
Dood
Waa la ogyahay in:
Laba ulood oo P iyo Q ah ayaa leh cabbir isku mid ah
Heerka gudbinta kulaylka P waa labanlaab labanlaab heerka gudbinta kulaylka Q
Heerkulka dhammaadka usha P waa 90 o , heerkulka dhammaadka usha Q waa 0 o heerkulka usha u dhexeeya P iyo Q waa T.
Su'aal: Heerkulka diyaaradda xadka P iyo Q
Jawaab:
Qaacidada heerka wareejinta kulaylka iyada oo loo marayo gudbinta :
Sharaxaad: Q/t = heerka gudbinta kulaylka, k = gudbinta kulaylka, A = aagga isgoyska, T 1 = heerkulka sare, T 2 = heerkulka hooseeya, l = dhererka shayga.
Laba ulood oo P iyo Q ah ayaa leh cabbir isku mid ah sidaa darteed bedka dusha sare (A) iyo dhererka (l) way ka baaba'aan isla'egta. Isla'egta kor ku xusan waxay isu beddeshaa:
Isugeynta gudbinta kulaylka P waa labanlaab tirada isku-dhafka gudbinta kulaylka Q. Isle'egta kor ku xusan waxay isu beddeshaa:
Heerkulka cidhifka usha P waa 90 o , heerkulka cidhifka usha Q waa 0 o heerkulka u dhexeeya usha P iyo Q waa T. Isle'egta kore waxay isu beddeshaa:
Heerkulka diyaaradda xadka P iyo Q waa 60 o C.
Jawaabta saxda ah waa E.
2. Ulaha A iyo B waxay leeyihiin isku bedka iyo dhererka isgoyska. Haddii isku-dhafka gudbinta ee usha A = 1/4 jeer isku-dhafka gudbinta ee usha B, markaa labaduba waa la kululeeyaa hal dhinac waxayna soo baxday in labaduba ay la kulmaan isbeddel heerkul oo isku mid ah. Markaa saamiga heerka gudbinta kulaylka ee usha A iyo usha B waa…..
A. 1: 4
B. 1: 2
C. 1: 1
D. 2: 1
E. 4: 1
Dood
Waa la ogyahay in:
Aagga isgoyska ee usha A (A) = aagga isgoyska ee usha B (A)
Dhererka usha A (l) = dhererka usha B (l)
Isugeynta gudbinta ee usha A (k) = 1/4 jeer isku-dhafka gudbinta ee usha B (1/4 k)
Isbeddelka heerkulka ee bar A (ΔT) = isbeddelka heerkulka bar B (ΔT)
La Doonayo: Isbarbardhigga xawaaraha gudbinta kulaylka ee usha A iyo usha B
Jawaab:
Qaacidada heerka wareejinta kulaylka iyada oo loo marayo gudbinta:
Sharaxaad: Q/t = heerka gudbinta kulaylka, k = gudbinta kulaylka, A = aagga isgoyska, T 2 = heerkul sare, T 1 = heerkul hoose, l = dhererka shayga.
Aagga isgoyska waa isku mid, dhererka usha waa isku mid, isbeddelka heerkulkuna waa isku mid.
Jawaabta saxda ah waa E.
3. Laba ulo bir ah oo A iyo B ah oo isku cabbir ah mid walba wuxuu leeyahay isku-xidhka gudbinta oo ah 2k iyo k siday u kala horreeyaan.
Labaduba way isku xiran yihiin, darafyada xorta ahna waxaa la mariyaa heerkul sida ku cad sawirka.
Heerkulka (T) ee isku-xidhka birta A iyo B waa...
A. 80 o C
B. 100 o C
C. 120 o C
D. 150 o C
E. 160 o C
Dood
Waa la ogyahay in:
Laba ulo bir ah A iyo B waa isku cabbir
Isugeynta gudbinta birta A = 2k
Isugeynta gudbinta birta B = k
Heerkulka caarada birta A = 210 o C
Heerkulka caarada birta B = 30 o C
La Rabo: Heerkulka (T) ee kala-goysyada birta A iyo B
Jawaab:
Qaacidada heerka wareejinta kulaylka iyada oo loo marayo gudbinta :
Sharaxaad: Q/t = heerka gudbinta kulaylka, k = conductivity kulaylka, A = bedka dusha sare, T 1 -T 2 = isbeddelka heerkulka, l = dhererka usha
Laba ulo bir ah A iyo B waa isku cabbir sidaa darteed bedka dusha sare (A) iyo dhererka (l) ee ulaha ayaa laga saarayaa isle'egta.
Jawaabta saxda ah waa D.
4. Laba ulood oo isku dherer ah iyo aag isgoys ah ayaa isku xiran sida ku cad sawirka hoose. Isu-dheellitirka gudbinta kulaylka ee usha labaad ee gudbiyaha = 2 jibaar isku-xidhka gudbinta kulaylka ee usha koowaad. Haddii usha koowaad la kululeeyo si T 1 = 100 o C iyo T 2 = 25 o C, markaa heerkulka kala-goyska (T) waa ...
A. 30 oC
B. 35 o C
C. 40 o C
D. 45 o C
E. 50 o C
Dood
Waa la ogyahay in:
Laba ulo bir ah A iyo B waa isku cabbir
Isugeynta gudbinta ee usha I = k
Isugeynta gudbinta ee usha II = 2k
Heerkulka caaradda usha I = 100 o C
Heerkulka cidhifka usha II = 25 o C
La weydiiyay: Heerkulka kala-goysyada ulaha I iyo II
Jawaab:
Qaacidada heerka wareejinta kulaylka iyada oo loo marayo gudbinta:
Sharaxaad: Q/t = heerka gudbinta kulaylka, k = conductivity kulaylka, A = bedka dusha sare, T 1 -T 2 = isbeddelka heerkulka, l = dhererka usha
Heerkulka diyaaradda xadka P iyo Q:
Laba ulo bir ah A iyo B waa isku cabbir sidaa darteed bedka dusha sare (A) iyo dhererka (l) ee ulaha ayaa laga saarayaa isle'egta.
Jawaabta saxda ah waa C.
5. Saddex ulo bir ah oo kala duwan oo A, B iyo C ah laakiin leh dherer isku mid ah iyo aag isdhaafsi ah, ayaa isku xiran sida ka muuqata sawirka hoose.
Gudbinta weyn 4 kA = 2kB = kC iyo T1 = 100oC iyo T4 = 20oC ka dibna heerkulka T2 iyo T3 waa…
A. T 2 = 54,26 o C, T 3 = 31,4 o C
B. T 2 = 31,4 o C, T 3 = 54,26 o C
C. T 2 = 32,4 o C, T 3 = 54,26 o C
D. T 2 = 56,26 o C, T 3 = 31,4 o C
E. T 2 = 54,26 o C, T 3 = 30,4 o C
Dood
Waa la ogyahay in:
T 1 = 100 o C
T 4 = 20 o C
4 k A = 2 k B = k C
Haddii k C = 4, k B = 2, k A = 1
La weydiiyay: T 2 iyo T 3
Jawaab:
Qaacidada wareejinta kulaylka iyada oo loo marayo gudbinta:
Macluumaadka:
Q/t = heerka wareejinta kulaylka, k = gudbinta kulaylka, A = aagga isgoyska, T 1 = heerkulka bilowga ah, T 2 = heerkulka kama dambaysta ah, l = dhererka usha.
Dhererka (l) iyo bedka isgoyska (A) waa siman yihiin sidaa darteed waa laga saarayaa isla'egta.
Isticmaal isla'egtan si aad u xisaabiso heerkulka.
Ka fiirso ulaha birta ah ee A iyo B.
Ka fiirso ulaha birta ah ee B iyo C.
Ka saar isleegta 1 iyo isleegta 2:
Xisaabi T 2 adoo isticmaalaya isla'egta 1:
Jawaabta saxda ah waa A.
Isha su'aasha:
Su'aalaha Imtixaanka Qaranka ee Fiisigiska ee Dugsiga Sare/Dugsiga Sare ee Xirfadda
