Mehlala e 8 ea lipotso mabapi le matla le motlakase
1. Lebone la motlakase le tšoailoeng ka 220 V – 5 A le sebelisoa metsotso e 30, kahoo matla a hlokahalang ke lebone ke…
A. 33 kJ
B. 330 kJ
C. 1.980 kJ
D. 19.800 kJ
Puisano
Motlakase (V) = Li-volt tse 220
Matla a hona joale (I) = 5 Ampere
Nako (t) = metsotso e 30 = metsotsoana e 30 x 60 = metsotsoana e 1800
Foromo ea Matla a Motlakase (P):
P = VI = (220 Volt)(5 Ampere) = 1100 Volt Ampere = 1100 Watt = 1100 Joule/motsotsoana
Matla a motlakase = Matla a motlakase x nako = (1100 Joules/motsotswana) (metsotsoana e 1800)
Matla a motlakase = 1.980.000 Joules = 1.980 kilo Joules
Karabo e nepahetseng ke C.
2. Tšepe e kopanngoang e ngotsoe fekthering e le 220 V - 60 W. Haeba sesebelisoa se buloa metsotso e 4, matla a motlakase ke…
A. 240J
B. 880 J
C. 14.400 J
D. 52.800 J
Puisano
Hoa tsebahala hore:
Matla (P) = 60 Watt = 60 Joules/motsotsoana
Motlakase (V) = Li-volt tse 220
Nako (t) = metsotso e 4 = metsotsoana e 4 x 60 = metsotsoana e 240
E botsitsoe: Matla a motlakase
Karabo:
Li-Volt tse 220 – Li-Watt tse 60 li bolela hore tšepe ea ho kopanya motlakase e sebetsa hantle haeba phapang e ka bang teng kapa motlakase oa motlakase e le li-volt tse 220 'me e na le matla a li-Watt tse 60 = Li-Joules tse 60/motsotsoana, ho bolelang hore tšepe ea ho kopanya motlakase e sebelisa li-Joules tse 60 tsa matla ka motsotsoana.
Matla a motlakase = matla a motlakase x nako = (Lijoule tse 60/motsotswana) (metsotsoana e 240) = Lijoule tse 14.400.
Karabo e nepahetseng ke C.
3. Matla a sebediswang ke tshepe motsotso o le mong ke 33 kJ mme a hokahantswe le motlakase wa di-volt tse 220, kahoo motlakase o phallang ka tshepe o...
A. 0,067 A
B. 0,40 A
C. 2,50 A
D. 15,0 A
Puisano
Hoa tsebahala hore:
Nako e sa fellang (t) = motsotso o le 1 = metsotsoana e 60
Matla (W) = 33 kiloJoules = 33.000 Joules
Motlakase (V) = Li-volt tse 220
Potso: Matla a motlakase (I)
Karabo:
Matla a motlakase ke matla a motlakase a sebediswang ka nako e itseng.
P = W / t = 33.000 Joules / metsotsoana e 60
P = 550 Watt
Foromo e hlalosang kamano pakeng tsa motlakase, motlakase oa motlakase le motlakase ke:
P = VI
Ho bala motlakase (I), foromo ena e fetoleloa ho:
I = P / V = 550 / 220 = 2,5 Ampere
Karabo e nepahetseng ke C.
4. Ntlo e sebelisa lisebelisoa tsa motlakase joalo ka ha ho thathamisitsoe tafoleng e latelang.
Ho sebelisoa motlakase o mokae ka khoeli e le 'ngoe (matsatsi a 30)?
A. 120 kWh
B. 60 kWh
C. 40 kWh
D. 20 kWh
Puisano
Hoa tsebahala hore:
Matla a lebone = 4 (10 Watt) = 40 Watt mme nako ya tshebediso ya lebone = dihora tse 10 x 30 = dihora tse 300
Matla a TV = 100 Watts le nako ea tšebeliso ea sehatsetsi = lihora tse 10 x 30 = lihora tse 300
Matla a tšepe = 300 Watts le nako ea tšebeliso ea tšepe = lihora tse 2 x 30 = lihora tse 60
Potso: Matla a motlakase a sebelisitsoeng khoeling e le 'ngoe
Karabo:
Matla a motlakase = matla a motlakase x nako
Matla a sebelisoang ke lebone = (40 Watt)(lihora tse 300) = Lihora tsa Watt tse 12.000 = Lihora tsa Watt tse 12 kilo = 12 kWh
Matla a sebelisoang ke TV = (100 Watt)(lihora tse 300) = Lihora tse 30.000 tsa Watt = Lihora tse 30 tsa Watt = 30 kWh
Matla a sebelisoang ke tšepe = (300 Watt)(lihora tse 60) = Lihora tsa Watt tse 18.000 = Lihora tsa Watt tse 18 kilo = 18 kWh
Matla ohle a motlakase a sebelisitsoeng = 12 kWh + 30 kWh + 18 kWh = 60 kWh.
Karabo e nepahetseng ke B.
5. Ka tlung, ho na le mabone a 5 a 25-watt a buloang lihora tse 14 ka letsatsi, sehatsetsi sa 200-watt se buloang lihora tse 24 ka letsatsi, le pompo ea metsi ea 125-watt e buloang lihora tse 8 ka letsatsi. Ke matla a makae a motlakase a sebelisoang ka khoeli e le 'ngoe (matsatsi a 30)?
A. 226,5 kWh
B. 144 kWh
C. 52,5 kWh
D. 30 kWh
Puisano
Hoa tsebahala hore:
Matla a lebone = 5(25) = 125 Watts le nako ea tšebeliso ea lebone = lihora tse 14 x 30 = lihora tse 420
Matla a sehatsetsing = 200 Watts mme nako ya tshebediso ya sehatsetsing = 24 hours x 30 = 720 hours
Matla a pompo ea metsi = 125 Watts le nako ea tšebeliso ea pompo ea metsi = lihora tse 8 x 30 = lihora tse 240
Potso: Matla a motlakase a sebelisitsoeng khoeling e le 'ngoe
Karabo:
Matla a motlakase = matla a motlakase x nako
Matla (lebone) = (125 Watt)(lihora tse 420) = Lihora tsa Watt tse 52.500 = Lihora tsa Watt tse 52,5 kilo
Matla (sehatsetsing) = (200 Watt)(lihora tse 720) = Lihora tsa Watt tse 144.000 = Lihora tsa Watt tse 144 kilo
Matla (pompo ea metsi) = (125 Watt)(lihora tse 240) = Lihora tsa Watt tse 30.000 = Lihora tsa Watt tse 30 kilo
Kakaretso ea matla a motlakase a sebelisitsoeng = 52,5 + 144 + 30 = 226,5 kilo Watt lihora = 226,5 kilo Watt lihora = 226,5 kWh.
Karabo e nepahetseng ke A.
6. Lebenkeleng la tšepe e sotheloang, ho na le mabone a mabeli a 20-watt a buloang lihora tse 7 ka letsatsi, tšepe e sotheloang ea 440-watt e sebelisoang ka karolelano ea lihora tse 4 ka letsatsi, le TV ea 50-watt e buloang lihora tse 3 ka letsatsi. Ke matla a makae a motlakase a sebelisoang ka khoeli e le 'ngoe (matsatsi a 30)?
A. 65,70 kWh
B. 52,80 kWh
C. 32,87 kWh
D. 16,43 kWh
Puisano
Hoa tsebahala hore:
Matla a lebone = 2(20) = 40 Watts le nako ea tšebeliso ea lebone = lihora tse 7 x 30 = lihora tse 210
Matla a ho kopanya = 440 Watts mme nako ea ho kopanya = lihora tse 4 x 30 = lihora tse 120
Matla a TV = 50 Watts mme nako ya tshebediso ya TV = dihora tse 3 x 30 = dihora tse 90
Potso: Matla a motlakase a sebelisitsoeng khoeling e le 'ngoe
Karabo:
Matla a motlakase = matla a motlakase x nako
Matla (lebone) = (40 Watt)(lihora tse 210) = Lihora tsa Watt tse 8.400 = Lihora tsa Watt tse 8,4 kilo
Matla (ho kopanya) = (440 Watt)(lihora tse 120) = Lihora tse 52.800 Watt = Lihora tse 52,8 tsa Watt
Matla (TV) = (50 Watt)(lihora tse 90) = Lihora tsa Watt tse 4.500 = Lihora tsa Watt tse 4,5 kilo
Kakaretso ea matla a motlakase a sebelisitsoeng = 8,4 + 52,8 + 4,5 = 65,7 kilo Watt lihora = 65,7 kilo Watt lihora = 65,7 kWh.
Karabo e nepahetseng ke A.
7. Lelapa le na le mabone a 5 a li-watts tse 20 ka 'ngoe a bonesitsoeng lihora tse 10 ka letsatsi, TV ea li-watts tse 60 e bonesitsoeng lihora tse 8 ka letsatsi, le sehatsetsi sa li-watts tse 150 se bonesitsoeng lihora tse 24 ka letsatsi. Ke matla a makae a motlakase a sebelisoang ka khoeli e le 'ngoe (matsatsi a 30)?
A. 548,64 kWh
B. 388,80 kWh
C. 188,00 kWh
D. 152,40 kWh
Hoa tsebahala hore:
Matla a lebone = 5(20) = 100 Watts le nako ea tšebeliso ea lebone = lihora tse 10 x 30 = lihora tse 300
Matla a TV = 60 Watts mme nako ya tshebediso ya TV = dihora tse 8 x 30 = dihora tse 240
Matla a sehatsetsing = 150 Watts mme nako ya tshebediso ya sehatsetsing = 24 hours x 30 = 720 hours
Potso: Matla a motlakase a sebelisitsoeng khoeling e le 'ngoe
Karabo:
Matla a motlakase = matla a motlakase x nako
Matla (lebone) = (100 Watt)(lihora tse 300) = Lihora tsa Watt tse 30.000 = Lihora tsa Watt tse 30 kilo
Matla (TV) = (60 Watt)(lihora tse 240) = Lihora tsa Watt tse 14.400 = Lihora tsa Watt tse 14,4 kilo
Matla (sehatsetsing) = (150 Watt)(lihora tse 720) = Lihora tsa Watt tse 108.000 = Lihora tsa Watt tse 108 kilo
Kakaretso ea matla a motlakase a sebelisitsoeng = 30 + 14,4 + 108 = 152,4 kilo Watt lihora = 152,4 kilo Watt lihora = 152,4 kWh.
Karabo e nepahetseng ke D.
8. Ela hloko lintlha tse latelang mabapi le tšebeliso ea lisebelisoa tsa motlakase!
Bongata ba matla a motlakase a sebediswang ke disebediswa tse tharo tsa motlakase tse ka hodimo ke…
A. 158.400 Joule
B. 950.400 Joule
C. 5.860.800 Joule
D. 9.504.000 Joule
Puisano
Tšebeliso ea motlakase thelevisheneng:
P = VI = (220 Volt)(0,3 Ampere) = 66 Volt Ampere = 66 Watt = 66 Joule/motsotsoana
Matla a khomphutha:
P = VI = (220 Volt)(0,4 Ampere) = 88 Volt Ampere = 88 Watt = 88 Joule/motsotsoana
Matla a pompo ea metsi:
P = VI = (220 Volt)(0,5 Ampere) = 110 Volt Ampere = 110 Watt = 110 Joule/motsotsoana
Nako:
Lihora tse 10 = metsotsoana e 10 x 3600 = metsotsoana e 36.000
Lihora tse 6 = metsotsoana e 6 x 3600 = metsotsoana e 21600
Lihora tse 4 = metsotsoana e 4 x 3600 = metsotsoana e 14400
Matla a motlakase = matla a motlakase x nako
Matla a motlakase a sebelisoang ke Thelevishene = 66 Joules/motsotswana x 36.000 metsotsoana = 2.376.000 Joules
Matla a motlakase a sebelisoang ke khomphutha = 88 Joules/motsotswana x 21600 metsotsoana = 1.900.800 Joules
Matla a motlakase a sebelisoang ke pompo ea metsi = 110 Joules/motsotsoana x 14400 metsotsoana = 1.584.000 Joules
Kakaretso ea matla a motlakase:
Li-Joules tse 2.376.000 + Li-Joules tse 1.900.800 + Li-Joules tse 1.584.000 = Li-Joules tse 5.860.800
Karabo e nepahetseng ke C.
Mohloli oa lipotso:
Lipotso tsa Tlhahlobo ea Naha ea Saense ea Sekolo se Phahameng sa Bana ba Banyenyane/Sekolo se Phahameng sa Boislamo
