Chương I- Điện học
Các câu hỏi tương tự
De trang tri cho quay hang nguoi ta dung n bong den loai ̉̉̉̉̉̉̉̉6v-12w mac thanh mot so day noi tiep roi mac song song voi nhau vao hieu dien the 220v nhan thay neu mac thanh 2 hay 3 day deu nhau thi chi can 1 dien tro phu r chung cho cac day la cac den sang binh thuong. Hoi so bong den la bao nhieu va gia tri dien tro r, mac theo cach nao thi loi hon? Mong moi nguoi giup mik
Trên hai Đ1(110V-100W),Đ2(110V-75W)
a mắc hai đến nay song song vào hdt 110V thì 2 đèn sáng như thế nào
b mac hai den nay noi tiep roi mac vao hdt 220v dc khong vi sao
tu noi san xuat dien nang den noi tieu thu la hai may bien the va hai duong day tai dien noi hai may bien the voi nhau. may tang the A co chi so vong day la n1/n20,1, duong day tai dien co dien tro tong cong la 10om. may ha the B co ti so vong day N1/N215. noi tieu thu mang dien 120V-12kW. bo qua hao phi dien nang trong hai may bien the va dien tro cac cuon day. 1.tinh hieu dien the tren cuon so cap cua nha may tang thetu noi san xuat dien nang den noi tieu thu la hai may bien the va hai duong...
Đọc tiếp
tu noi san xuat dien nang den noi tieu thu la hai may bien the va hai duong day tai dien noi hai may bien the voi nhau. may tang the A co chi so vong day la n1/n2=0,1, duong day tai dien co dien tro tong cong la 10om. may ha the B co ti so vong day N1/N2=15. noi tieu thu mang dien 120V-12kW. bo qua hao phi dien nang trong hai may bien the va dien tro cac cuon day. 1.tinh hieu dien the tren cuon so cap cua nha may tang thetu noi san xuat dien nang den noi tieu thu la hai may bien the va hai duong day tai dien noi hai may bien the voi nhau. may tang the A co chi so vong day la n1/n2=0,1, duong day tai dien co dien tro tong cong la 10om. may ha the B co ti so vong day N1/N2=15. noi tieu thu mang dien 120V-12kW. bo qua hao phi dien nang trong hai may bien the va dien tro cac cuon day. 1.tinh hieu dien the tren cuon so cap cua nha may tang the
1 ,Duong day tai dien tu huyen ve xa dai 10km co hieu dien the truyen di 1 dong dien 200 A day dan bang dong cu 1km co R =0,2 Ω Tinh cong suat hao phi do toa nhiet tren duong day ( biet moi duong day tai dien gom 2 day mac song song voi nhau )
Day Nicrom dien tro suat 1.1.10-6 Ωm .Co chieu dai 10m, tiet dien 0.5mm2. Hieu dien the dat vao 2 dau day la 24V . Tinh dien tro cua day va Cuong do dong dien qua day.
day dan dong chat tiet dien deu co dien tro r= 256. phai cat day ra bao nhieu doan thang bang nhau de khi mac song song nhau thi dien tro tuong duong bang 4
hien nay tren TG co bao nhieu loaj cong nghe nha may dien hat nhan ? cong nghe nao dc sd rog rai nhat? theo e, nha may dien hat
nhan co phaj la co so san xuat dien chiu it' tac dong nhat tu moj truog va khj hau k? vi sao? giup mk vs mk can gap
Giua 2 diem A va B co HDT ko doi U=12V. Nguoi ta mac den D1(6V-9W), D2(12V-12W) va 1 bien tro R3=6Ω thanh md
a. Donh khoa K, tinh CDDD di qua moi den va cho biet chung co sbt ko? Tinh P tieu thu moi den luc do.
b. Khi ngat khoa K thi do sang den thay doi ntn so vs luc khoa K dong
Cho nguon dien co hieu dien the ko doi, 1 ampe ke ko li tuong, 1 von ke ko li tuong, 1 dien tro va 1 so day noi. Hay thiet ke thi nghiem xac dinh dien Ra cua ampe ke va Rv cua von ke va dien tro R