Mienzaniso mitanhatu yemibvunzo yesimba remagetsi
1. Mudzidzi anobatidza TV kwemaawa matanhatu pazuva. TV yakabatana nemagetsi e220 volts. Volt yakasimba kwazvo electric current iyo inopfuura nemundege i0,5 Ampere. Kana PLN ikaisa mutero paRp. 600,00 / kWh, saka mutengo wekushandisa simba remagetsi yeTV kwemwedzi mumwe chete (mazuva makumi matatu) ndeye….
A. Rp. 9.900,00
B. Rp. 11.880,00
C. Rp. 19.800,00
D. Rp. 23.760,00
Kukurukurirana
Zvinozivikanwa kuti:
Nguva yekushandisa terevhizheni = maawa matanhatu x 30 = maawa zana nemakumi masere
Tegangan (V) = 220 Volt
Simba remazuva ano (I) = 0,5 Ampere
Mutengo wemagetsi = Rp. 600,00 / kWh
Akabvunzwa: Mutengo wekushandisa magetsi paTV kwemwedzi mumwe chete (mazuva makumi matatu)
Mhinduro:
Simba reterevhizheni:
P = VI = (220 Volt) (0,5 Ampere) = 110 Volt Ampere = 110 Watt
Simba remagetsi = simba remagetsi x nguva yekupedza
Simba remagetsi reterevhizheni = 110 Watt x maawa 180 = maawa 19800 Watt = 19,8 kilo Watt maawa = 19,8 kilo Watt maawa = 19,8 kWh
Mutengo wekushandisa magetsi paTV kwemwedzi mumwe chete:
19,8 kWh x Rp. 600,00 / kWh = Rp. 11.880,00
Mhinduro chaiyo ndeiyi B.
2. Mumba mune marambi mana e20W, marambi maviri e10W, uye marambi matatu e40W, ayo anobatidzwa kwemaawa mashanu pazuva. Kana mutengo wemagetsi pa kWh uri Rp 500,00, saka mari yekubhadhara mumwedzi mumwe chete (mazuva makumi matatu) ndeiyi...
A. Rp. 5.625,00
B. Rp. 7.500,00
C. Rp. 12.750,00
D. Rp. 16.500,00
Kukurukurirana
Zvinozivikanwa kuti:
Marambi mana emagetsi makumi maviri = 4 x 20 Watts = 80 Watts
Marambi mana emagetsi makumi maviri = 2 x 10 Watts = 20 Watts
Marambi mana emagetsi makumi maviri = 3 x 40 Watts = 120 Watts
Simba rose (W) = 80 Watts + 20 Watts + 120 Watts = 220 Watts
Nguva (t) = maawa mashanu x 30 = maawa zana nemakumi mashanu
Mutengo wemagetsi pa kWh = Rp. 500,00
Akabvunzwa: Mari dzinofanira kubhadharwa mukati memwedzi mumwe chete
Mhinduro:
Simba remagetsi = Simba remagetsi x Nguva yekupedza = 220 Watt x maawa 150 = maawa 33000 Watt = 33 kilo Watt maawa = 33 kilo Watt maawa = 33 kWh
Mari dzinofanira kubhadharwa:
(33 kWh)(Rp 500,00/kWh) = Rp 16.500
Mhinduro chaiyo ndiD.
3. Imba yaVaBudi inoshandisa michina yemagetsi ine marambi matatu e20 W rimwe nerimwe, marambi matatu e40 W rimwe nerimwe, ese anoshandiswa kwemaawa gumi nemaviri pazuva. Pombi yemvura ye250 W inoshandiswa kwemaawa mana pazuva uye simbi ye300 W inoshandiswa kwemaawa maviri pazuva. Kana mutero wemagetsi uri Rp. 600,00 / kWh, bhiri remagetsi rinofanira kubhadharwa naVaBudi kwemwedzi mumwe chete (mazuva makumi matatu) i…..
A. Rp. 57.680,00
B. Rp. 59,680.00
C. Rp. 64.820,00
D. Rp. 67.680,00
Kukurukurirana
Zvinozivikanwa kuti:
Simba remwenje = 3 (20 Watt) + 3 (40 Watt) = 60 Watt + 120 Watt = 180 Watt uye nguva yekushandisa rambi = maawa 12 x 30 = maawa 360
Simba repombi yemvura = 250 Watts uye nguva yekushandisa pombi yemvura = maawa mana x 30 = maawa zana nemakumi maviri
Simba resimbi = 300 Watts uye nguva yekushandisa simbi = maawa maviri x 30 = maawa makumi matanhatu
Mutengo wemagetsi Rp. 600,00 / kWh
Akabvunzwa: Mari yekubhadhara kwemwedzi mumwe chete (mazuva makumi matatu)
Mhinduro:
Simba remagetsi = simba remagetsi x nguva
Simba remwenje = (180 Watt)(maawa 360) = maawa 64.800 Watt = maawa 64,8 kilo Watt
Simba repombi yemvura = (250 Watt) (maawa zana nemakumi maviri) = maawa zviuru makumi matatu eWatt = maawa makumi matatu eWatt
Simba resimbi = (300 Watt)(maawa makumi matanhatu) = maawa e18.000 Watt = maawa e18 kilo Watt
Simba remagetsi rose rinoshandiswa = 64,8 + 30 + 18 = 112,8 kilo Watt maawa = 112,8 kilo Watt maawa = 112,8 kWh.
Mari yekubhadhara kwemwedzi mumwe chete = (112,8 kWh)(Rp. 600,00 / kWh) = Rp. 67.680
Mhinduro chaiyo ndiD.
4. Imba inoshandisa midziyo yemagetsi yemazuva ese inotevera…
Isimba remagetsi rinoshandiswa mumwedzi mumwe chete (mazuva makumi matatu) rakaita sei?
A. 146 kWh
B. 78 kWh
C. 52 kWh
D. 26 kWh
Kukurukurirana
Zvinozivikanwa kuti:
Simba remwenje inopenya = 5 x 20 Watt = 100 Watt uye nguva yekushandisa rambi inopenya = maawa gumi nemaviri x 30 = maawa mazana matatu nemakumi matanhatu
Simba remwenje weNeon = 6 x 10 Watt = 60 Watt uye nguva yekushandisa rambi reincandescent = maawa gumi x 30 = maawa mazana matatu
Simba reterevhizheni = 1 x 80 Watt = 80 Watt uye nguva yekushandisa terevhizheni = maawa gumi x 30 = maawa mazana matatu
Akabvunzwa: Huwandu hwesimba remagetsi rinoshandiswa mumazuva makumi matatu
Mhinduro:
Simba remagetsi = simba remagetsi x nguva yekupedza
Simba remagetsi rerambi rinopisa = 100 Watt x maawa 360 = maawa 36.000 Watt = 36 kilo Watt maawa = 36 kWh
Simba remagetsi remwenje ye neon = 60 Watt x maawa 300 = maawa 18.000 Watt = 18 kilo Watt maawa = 18 kWh
Simba remagetsi reterevhizheni = 80 Watt x maawa 300 = maawa 24.000 Watt = maawa 24 Watt = 24 kWh
Simba remagetsi rese = 36 kWh + 18 kWh + 24 kWh = 78 kWh
kWh = kilo Watt awa = kilo Watt awa
Mhinduro chaiyo ndeiyi B.
5. Tarisa mufananidzo unotevera wemudziyo wemagetsi! Simba remagetsi remudziyo rakanyorwa mumufananidzo uye mudziyo unoshandiswa kwemaminitsi makumi matatu, saka huwandu hwesimba remagetsi rinoshandiswa ndi…..
A. 396 makirogiramu
B. 540 kilogiramu Joule
C. 600 kilogiramu Joule
D. 900 kilogiramu Joule
Kukurukurirana
Zvinozivikanwa kuti:
Simba remagetsi (P) = 300 Watt = 300 Joules / sekondi
Nguva (t) = maminetsi makumi matatu = 30 (masekondi makumi matanhatu) = masekondi 1800
Akabvunzwa: Huwandu hwesimba remagetsi rinoshandiswa
Mhinduro:
Simba remaJoules mazana matatu pasekondi zvinoreva kuti simbi inoshandisa maJoules mazana matatu esimba pasekondi yega yega. Kana ikashandiswa kwemasekondi 1800, simbi inoshandisa maJoules zviuru mazana mashanu nemakumi mana esimba remagetsi = makirojoules mazana mashanu nemakumi mana.
Mhinduro chaiyo ndeiyi B.
6. Mhuri inoshandisa simba remagetsi kwemwedzi (mazuva makumi matatu) pakushandisa midziyo yemagetsi sezvakaratidzwa patafura inotevera!
Simba remagetsi remuchina wekuwachisa, TV neAC…
Kukurukurirana
Simba remagetsi remuchina wekuwachisa = 12 kWh = maawa 12.000 Watt, nguva yekushandiswa = maawa maviri x 30 = maawa makumi matanhatu
Simba remagetsi reTV = 19,2 kWh = maawa 19.200 Watt, nguva yekushandisa = maawa 8 x 30 = maawa 240
Simba remagetsi reAC = 72 kWh = maawa 72.000 Watt, nguva yekushandisa = maawa 6 x 30 = maawa 180
Simba remagetsi = simba remagetsi / nguva
Simba remuchina wekuwachisa = maawa e12.000 Watt / maawa makumi matanhatu = 200 Watts
Simba reTV = maawa 19.200 Watt / maawa 240 = 80 Watts
Simba reAC = maawa 72.000 Watt / maawa 180 = 400 Watts
Mhinduro chaiyo ndeiyi B.
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