P = P.R = U^R
R
De Pmax thi (R+ )min, AD BDT Cosi ta c6 (R+ )> 2Zc
R >< Dau "=" xay ra <^ R=Zc Dau "=" xay ra <^ R=Zc
Ta CO Z = - = 10072Q = N/ZZ^ ZC = lOOQ =^ C = ^° .-4 -(F)
I • - - 71
Cau 9: Mpt hpp kin (den) chi chua hai trong ba phan tu R, L, C mac noi tiep. Neu
dat vao hai dau mach mpt di^n ap xoay chieu u = 200 ^/6 cos(1007tt + ^ ) (V) thi cuong dp dong di?n qua hpp den la i= 2N/2 cos(1007it - ^ ) ( A ) - Do^n mach cuong dp dong di?n qua hpp den la i= 2N/2 cos(1007it - ^ ) ( A ) - Do^n mach chua nhiing phan tu nao? Gia trj ciia cac dai lupng do?
A. R = 50N/3 n; ZL= 150fi B. R = 50 Vs Q ; Zc= 150n
C. Zc = 50Q; ZL= 150Q D . R = 60O; ZL = 160^
<Phdn tkh v>d hu&ng ddn gidi
Vai may FX570ES: Bam chpn [MODE| § tren man hinh xuat hi^n chu: CMPLX. Chpn don vj do goc la dp ( D ) , bam : JSHIFTJ ^0DF\ tren man hinh hien Chpn don vj do goc la dp ( D ) , bam : JSHIFTJ ^0DF\ tren man hinh hien
thi chu D
Bam ^HIFTJ |MODE| [T] | g: Cai d|it dang toa dp de cac: (a + bi).
^ u _ 200V6Z30
" i ~ {lyflZ-30)
Nhap^OON/ilBISHIFTlH @ QlE^B ^HIF^O S
Hien thj: 86,6 +150i =50 S +150i .Suy ra: R = 50 ^/3 Q; ZL= 150n.
Vay hpp kin chiia hai phan tu R, L.
Chpn dap an A
Cty TNHH MTV DWH Khang Viet
C a u 1 0 : Mpt hpp kin (den) chi chiia hai trong ba phan tu R, L, C mac noi tiep.
Ne'u dat vao hai dau mach mpt di^n ap xoay chieu u = 200 %/2 cos(1007tt + —)
4
(V) thi cuang dp dong di^n qua hpp den la I = 2cos(1007it)(A). Doan mach chua nhung phan tu nao? Gia trj ciia cac dai lupng do? chua nhung phan tu nao? Gia trj ciia cac dai lupng do?
A.R = 60N/3n;Z=150fi. B. R = 500; Zc = 50n . ' C. Zc = 150fi; ZL= 150Q . D. R = lOOfi; ZL= lOOQ . C. Zc = 150fi; ZL= 150Q . D. R = lOOfi; ZL= lOOQ .
'Phan tich vd hu&ng ddn giai
Voi may FX570ES: Bam chpn [M0DE| § tren man hinh xuat hi?n chir: CMPLX. Chpn don vi do goc la dp (D), bam: JSHIFTJ |M0D£| § tren man hinh hien thi Chpn don vi do goc la dp (D), bam: JSHIFTJ |M0D£| § tren man hinh hien thi chuD
Bam IHIFI] |M0DE| H | @: Cai dat dang toa dp de cac: (a + bi). ^ _ u _ 200V2Z45 ^ _ u _ 200V2Z45
~ i " (2Z0)
Nhap^OON^B ^HlglJB §i OBB ^HjgljB @B
Hien thj: 14L42...Z45 .bam JSHIFTJ^^R Hien thi: 100+1 OOi Hay: R = lOOQ; ZL= 1OOQ. Hpp kin chua R, L. Hay: R = lOOQ; ZL= 1OOQ. Hpp kin chua R, L.
Chpn dap an D
C a u 1 1 : Cho mach di?n nhu hinh ve:
10
C = — ( F ) ; L = ^ ( H )
n n M L
jmttitx. N B
Biet dat vao hai dau mach di?n ap xoay chieu UAB = 200cosl007it(V) thi cuong
dp dong di?n trong mach la i = 4cos(1007t0(/l); X la do^n mgch gom hai trong
ba phan tu (Ro, Lo (thuan), Co) mac noi tiep. Cac phan tu ciia hpp X la: A. Ro=50fi; Co = A. Ro=50fi; Co = C. Ro=100n; Co = 10 1-4 -(F) 10 1-4 -(F) B.Ro=50n;Co = D . Ro=50n;Lo= 10 1-4 2.71 -(F) 10" -(F)
Phdn tich vd hu&ng ddn gidi
Truoc Hen tinh ZL= lOOQ; Zc= lOOn
Vai may FX570ES : Bam ^ O D § § xuat hifn CMPLX. -Bam: ISHIFIJ | M 0 D £
^ man hinh hien thj R .
Bam JSHIFII [MQDE| [T] § @: Cai dat dang toa dp de cac: (a + bi). Birac 1: Viet UAN= iZAN= 4 Z 0 x(z(200 -100)) Birac 1: Viet UAN= iZAN= 4 Z 0 x(z(200 -100))
Nhdp may: 4 g ^HIFTJ 0 0 Q \ENG\] ^ \- lOCJ 11 \Shift
{six d u n g bo nho doc lap)
2 3 = M+ M+
Kei qua Id: 400 Z - c6 nghia Id: U/\N= 400 cos(1007it+7t/2 )(V) Buoc 2: T i m U N S = U X = w^s - UAN :
Nhdp may: §Oo] g ^HIFTJ 0 0 0 ^ C L | [M+] (goi bo nho dpc lap) |SHJFT
3 0 0 Ket 447,21359 Z - 63, 4349
- U s
B u 6 c 3 : T i m Z x : Z x =
Nhap may: |AnS 11:| (11 411 PHIFTJ |(-)| 0 ) y k e t q u a : 50-lOOi
Vay hop X c6 2 phan t u nen se la: Ro= 50Q; Zcn=100 CI.
- 4
T u do ta duoc: Ro= 50Q; Cp = ^ ^ ( F ) .
71
Chgn dap an A
Cach 2: Nhan xet: Theo de cho thi u va i cung pha nen mach cong huong:
=>Z = Rv = Up _ 200
In ~ 4 = 50Q X CO chua R,
Tinh Zi, = 200Q; Zc = lOOQ, do Zc= 100^2 < Z i = 200Q Mach X chua Co sao cho: Zc + Zc()= Zi = 200Q
10 - 4
-(F).
Zco= Zi. - Zc = 200Q - lOOQ = lOOQ => Co=
Chpn dap an A
Nhan xet: each gidi thu 1 cung khong kho lam vi thechung ta c6 them cdi nhin nhan vebdi todn hop den tuy nhien neu da thdnh thqo ve sif dung mdy tinh thi khong cdch nay thi cdch khdc, chiing ta se gidi quyel bdi todn hop den nhanh chong.
Cau 12: Cho mot hpp den X trong do c6 chua 2 trong 3 phan t u R, L, hoac C
mic noi te'p. Mac hop den noi tiep voi mot cuon day thuan cam c6
Lo = 318mH. Dat vao hai dau doan mach dien mot hieu dien the xoay chieu
C O bieu thuc u = 200 V2 .cos(100 nt- n /3)(V) thi dong dien chay trong mach
C O bieu thuc i = 4 N/2 .COS(100 TI t - TI /3)(A). Xac dinh phan t u trong hpp X va
tinh gia trj cua cac phan tu?
A . R = 5 0 n ; C = 3 1 , 8 | i F . B. R = lOOQ; L = 31,8mH. C.R = 5 0 Q ; L = 3,18nH. D . R = SOQ; C = 318^ F. C.R = 5 0 Q ; L = 3,18nH. D . R = SOQ; C = 318^ F.
Cty TNHH MTV DWH Khanx Vie
<Phdn tick Pd huong ddn gidi
Truoc tien tinh Zi = lOOQ
Voi may FX570ES: Bam ^ O D E | § xua't hien C M P L X .
Bam:)SHIFT]|MOD^|^ man hinh hien thj R
Bam SHIFT | M 0 D E | H g S : Cai dat dang toa dp de cac: (a + bi).
Buoc 1: Viet u;,= / Zi.= 4 %/2 Z
V 3 , xlOOi
Nhdp mdyA^l [g^HIFTJ|(l| ^ 3 = M+ (su
d u n g bo nho doc lap)
Kei qua Id: 565J Z - c6 nghia Id: U L =565,7cos(1007tt + n/6 )(V) ,
Buoc 2: T i m ux =UAB - ui:
Nhdp mdy: |200N/2 | g [SHIFlj f 7t
R C L M + J (goi bo nho doc lap)
SmF^ § § ^Ket qua: 632,455532 Z -2,1543
Buac 3: T i m Zx: Zx =
i
Nhap may: J A n S l ^ (0 4N/2 Og^HIF^f) )Oke'tqua: 50-lOOi Vay hop X c6 2 phan t u nen se la: Ro= 50fi; Zco= 100 Q.
,-4
T u do ta dugc: Ro= 5 0 Q ; CQ ^ ^ { F ) ^ 3 1 , 8 . 1 0 - ^ ( F ) = 3 1 , 8 ( M F )
(BMUC kic
Phanl. DAO DQNG DIEU H 6 A VA CON LAC DON
Chuyen del: Duong tron lupng giac trong dao dpng dieuhoa 6
Chuyendel: Tan so - Chu ki - Bien dp 23 Chuyen de3: Quang duong - Toe dp trung binh - Van toe trung Chuyen de3: Quang duong - Toe dp trung binh - Van toe trung
binh 34
Chuyen de4: Lire trong dao dpng dieu hoa 52 Chuyen de5: Nang lupng trong dao dpng dieu hoa 63 Chuyen de5: Nang lupng trong dao dpng dieu hoa 63
Chuyen de6: Cac dang bai tap con lac don 70
Chuyen de7: Con 13c trung phung 107 Chuyen de8: Cac loai dao dpng 111 Chuyen de8: Cac loai dao dpng 111 Chuyen de9: Viet phuong trinh dao dpng dieu hoa 126
Chuyen delO: Tong hop dao dpng 144 Chuyen dell: Dang toan hai vat dao dpng dieu hoa 154 Chuyen dell: Dang toan hai vat dao dpng dieu hoa 154
Chuyen dell: Thay doi chieu dai trong qua trinh dao dpng 160 Chuyen de 13: Thay doi khoi lupng trong qua trinh dao dpng 165 Chuyen de 13: Thay doi khoi lupng trong qua trinh dao dpng 165
Chuyen deli: Bai toan va cham 175
Phan 2. SONG CO VA SONG AM
Chuyen del: Song co va su truyen song co 182
Chuyen del: Giao thoa song co 202 Chuyen de3: Song dung 234 Chuyen de3: Song dung 234 Chuyen dei: Song am 257
Phan 3. DONG DIEN XOAY CHIEU
Chuyen del: Bai toan ve viet bieu thiic 276 Chuyen del: Bai toan ve gia tri hi^u dung 292 Chuyen del: Bai toan ve gia tri hi^u dung 292 Chuyen de3: Bai toan ve gia tri tuc thoi 306 Chuyen de4: Bai toan ve dp l^ch pha 324 Chuyen de5: Cong suat va he so cong sua't 334
Chuyen de6: Bai toan ve c\fc trj 354 Chuyen de7: Hai gia tri ciia bien so cho cung mpt gia tri cua ham so...378 Chuyen de7: Hai gia tri ciia bien so cho cung mpt gia tri cua ham so...378
Chuyen deS: Bai toan ve may di^n 387 Chuyen de9: Bai toan ve hpp den 431 Chuyen de9: Bai toan ve hpp den 431