Page 165 - Electrician -1st Year - TT

TYo (Power) T«t£ 1.5.47 dLô] ùRôPo× LÚj§Vp
GXdh¬μVu (Electrician) þ AC ªuÑtßdLs (AC Circuits)

R-L, R-C Utßm R-L-C CûQ ªuÑtßdLs (R-L, R-C and R-L-C parallel circuits)

úSôdLeLs: ClTôPj§u Ø¥®p ¿eLs ùT\ úYi¥V A±Ü §\uLs
• AhªhPuv ØdúLôQm Utßm LuPdPuv, NNlPuv Utßm AhªhPuv
B¡VYt±tÏ CûPúVÙs[ ùRôPoûT ®[dÏRp
• NNlPuv, LuPdPuv Utßm AhªhPuv B¡VYt±u ϱÂÓLû[ ®[dÏRp.

R-L Parallel circuit : TX Cm©PuvLû[ CûQ ¡û[ ªuú]ôhP
CûQl©p CûQjÕ UôߧûN úT^ôo áÓRp
=
ªu]ÝjRj§û] YZe¡]ôp A§p
Y Z e L p
ùNpÛm ùUôjR ªuú]ôhPUô]Õ AkRf
ªu]ÝjRm
Ñt±u ¡û[ ªuú]ôhPj§u úTv^ôo
áÓRÛdÏf NUUôÏm. (Fig 1) = R² AhªhPu³u úT^ôo áÓRp

ϱl×: YZeÏm ªu]ÝjRjûR
ϱl©Óm úTôÕ V ApXÕ E Guß
Uôt± GÝRXôm.

ùUôjR ªuú]ôhPj§û] LôQ CWiÓ
UôߧûN AhPªhPuvû^ CWiÓ
Øû\Ls Es[].
TϧVôL ©¬dLXôm (An admittance may be
– AhªhPuv Øû\ resolved into two components) : JÚ Tϧ
ªu]ÝjR§tÏ CuúTv³p YÚYûR
– úTv^ôo Øû\
conductance GuTo. g Gu\ GÝj§p ϱl©ÓYo.
AhªhPuv Øû\ (Admittance method)
Ut\ JÚ Tϧ ªu YZeÏ ªu]ÝjRj§tÏ
E 90° úLôQj§p CÚlTûYVôÏm. CRû]
The current in any branch = I susceptance GuTo. CRû] b Gu\ GÝj§p
Z
ϱl©ÓYo.
1 1
E = x where 1 R
Z Z = g Y Cos = φ ×
Z Z
GuTÕ ªuÑt±u AhªhPuv Gu¡ú\ôm.
R R
AhPªhPuv GuTÕ Cm©Puv GuT§u = 2 = 2 2
RûX¸ZôÏm. AhªhPuvû^ ‘Y’ Gu\ Z R Z +
GÝjRôp ϱ«PlTÓ¡\Õ. (Fig 2) 1 X X
b = Y sin φ = × = 2
1 I Z Z Z
= I E x = EY or Y =
Z E = X
R 2 + X 2
ùUôjR ªuú]ôhPm Uôß §ûN ªuú]t× (admittance), ªuLPjÕm
ùUôjR AhªhPuv =
(Y ) RuûU ( conductance) Utßm ªuú]t× §\u
T ùTôÕYô] YZeLp (susceptance) B¡VYt±u A[ÜLs úUô (mho)
ªu]ÝjRm
Ʊ
ϱÂÓ þ Bp AûZdLlTÓ¡\Õ.

145