Zitsanzo 7 za Mavuto a Otsutsa
1. Kutengera chithunzi cha chotsutsa chomwe chili m'mbali, kukana kwake ndi...
A. 542 Ω + 10%
B. 542 Ω + 20%
C. 5400 Ω + 5%
D. 5400 Ω + 20%
Zokambirana
Mitengo yotsutsa yotsutsa nthawi zambiri imawonetsedwa pogwiritsa ntchito code ya utoto. Mitundu iwiri yoyamba imayimira manambala awiri oyamba a mtengo wotsutsa, mtundu wachitatu umayimira mphamvu ya khumi yomwe imagwiritsidwa ntchito pochulukitsa, ndipo mtundu wachinayi umayimira kupotoka kwa kulekerera.
Mtundu woyamba = wobiriwira = 5
Mtundu wachiwiri = wachikasu = 4
Mtundu wachitatu = wofiira = 10 2 = 100
Mtundu wachinayi = wopanda mtundu = 20%
Kotero mtengo wa transistor ndi 5400 Ohm ± 20%
Yankho lolondola ndi D.
2. Ntchito ya resistor mu circuit yamagetsi ndi...
A. jenereta yamagetsi yogwedera
B. chowongolera magetsi
C. kusunga chaji yamagetsi
D. amplifier yamagetsi obwera
Zokambirana
Zotsutsa zimagwira ntchito yolamulira kukula kwa mphamvu yamagetsi.
Yankho lolondola ndi B.
3. Chithunzi cha chinthu chamagetsi chotchedwa resistor ndi...
Zokambirana
A = kapitala
B = diode
C = kapitala
D = chotsutsa
Yankho lolondola ndi D.
4. Chizindikiro cha resistor pachithunzi chili pansipa ndi...
A = chizindikiro chotsutsa
B = chizindikiro cha diode
C = chizindikiro cha capacitor
D = chizindikiro cha inductor
Yankho lolondola ndi A.
5. Yang'anani chithunzi chotsatirachi! Mtengo wa kukana kwa resistor ndi...
A. 46 KΩ ±10%
B. 47 KΩ ±10%
C. 473 KΩ ±10%
D. 47000 KΩ ± 10%
Zokambirana
Mitengo yotsutsa yotsutsa nthawi zambiri imawonetsedwa pogwiritsa ntchito code ya utoto. Mitundu iwiri yoyamba imayimira manambala awiri oyamba a mtengo wotsutsa, mtundu wachitatu umayimira mphamvu ya khumi yomwe imagwiritsidwa ntchito pochulukitsa, ndipo mtundu wachinayi umayimira kupotoka kwa kulekerera.
Mtundu woyamba = wachikasu = 4
Mtundu wachiwiri = wofiirira = 7
Mtundu wachitatu = lalanje = 10 3 = 1000
Mtundu wachinayi = siliva = 10%
Kotero mtengo wa transistor ndi 47000 Ohms ± 10% = 47 kiloOhms ± 10%
Yankho lolondola ndi B.
6. Chotsutsa chimakhala ndi mitundu yotsatizana ya bulauni, yofiira, yobiriwira, yagolide, kotero mphamvu ya chotsutsa ndi...
A. 1200 kΩ
B. 1200 Ω
C. 120 Ω
D. 12 Ω
Zokambirana
Mitengo yotsutsa yotsutsa nthawi zambiri imawonetsedwa pogwiritsa ntchito code ya utoto. Mitundu iwiri yoyamba imayimira manambala awiri oyamba a mtengo wotsutsa, mtundu wachitatu umayimira mphamvu ya khumi yomwe imagwiritsidwa ntchito pochulukitsa, ndipo mtundu wachinayi umayimira kupotoka kwa kulekerera.
Mtundu woyamba = bulauni = 1
Mtundu wachiwiri = wofiira = 2
Mtundu wachitatu = wobiriwira = 10 5 = 100.000
Mtundu wachinayi = golide = 5%
Kotero mtengo wa transistor ndi 1.200.000 Ohms ± 5% = 1200 kiloOhms ± 5%
Yankho lolondola ndi A.
7. Onani chithunzi cha resistor pansipa!
Mtengo wotsutsa wa resistor iyi ndi…
A. 270.000 Ω ± 10%
B. 27.000 Ω ± 10%
C. 2.700 Ω ± 10%
D. 270 Ω
Zokambirana
Mtundu woyamba = wofiira = 2
Mtundu wachiwiri = wofiirira = 7
Mtundu wachitatu = wachikasu = 10 4 = 10.000
Mtundu wachinayi = siliva = 10%
Kotero mtengo wa transistor ndi 270.000 Ohms ± 10% = 270 kiloOhms ± 10%
Yankho lolondola ndi A.
Gwero la funso:
Mafunso a Mayeso a Sayansi ya Sukulu ya Sekondale/Chisilamu cha Sukulu ya Sekondale
