Page 164 - Electrician -1st Year - TT

V = 180 - 120 = 60 volts. Cm©Puv ÑjRUô] ªuRûPVôLÜm Utßm
X
CÕ Fig þ 2p Lôi©dLlThÓs[Õ. ªLd Ïû\kRRôLÜm CÚdÏm. úUÛm
ùW£v¥q LômùTô]h Utßm ¬úVôd¥q ªuÑt±p ùNpÛm ªuú]ôhPm ªL
LômùTô]h CûPúV Es[ ªu]ÝjR A§LUôL CÚdÏm ªuú]ôhPm =
Årf£«u áhÓjùRôûLVô]Õ ùNÛjRlTÓm ªu]ÝjRm/ªuRûP (R)
ùNÛjRlTÓm ªu]ÝjRj§tÏ NUUôL úUúX ®Yô§jRT¥ ùRôPo CûQl× RLC
CÚdLôÕ GuTûR ϱjÕd ùLôs[Üm. Ñt±p
Hù]²p ªu]ÝjR Årf£ CuúTv³p
2
Cm©Puv Z = R + (X − X ) 2
(in phase) CÚdLôÕ. B]ôp V Utßm V «u L C
R X
úT^ôo (phase) áhÓjùRôûL ùNÛjRlTÓm V
ªuú]ôhPm I =
ªu]ÝjRj§tÏ NUUôL CÚdÏm. CÕ ¸úZ Z
RWlThÓs[Õ.
X − X
Utßm úTv úLôQm θ = tan − 1 L C
R
CÕ úTôu\ ùRôPo CûQl× LC ªuÑt±p
(Fig1a) @lÃdÏYu£ûV "O" HZXõ ÚkÕ
A§L¬jRôp CuPd¥q ¬VôdP]v
(X = 2 π fL) ¿[Yôd¡p A§L¬dÏm B]ôp
L
ùLlTô£h¥q ¬VôdPuv exponential BL
Ïû\Ùm.
JÚ Ï±l©hP @lÃdÏYu£«p ARôYÕ
ùWùNô]v @lÃdÏYu£«p ( f ) X Utßm X C
r
L
2 2
V T = V R + V X «u áhÓjùRôûL '0' YôL CÚdÏm (X þ X = 0).
L
C
2 2 ùWùNô]v @lÃdÏYu£«p
= V R + (V − V C ) – ¨LW ¬VôdPuv X = 0 (ie X þ X )
L
L C
2 2 = 100 úYôphv – ªuÑt±u Cm©Puv ªLÜm Ïû\YôL
= 80 + 60
CÚdÏm. ÑjRUô] ªuRûP Utßm RdÏ
(ùNÛjRlTÓm ªu]ÝjRm) ªuÑt±u úTv
NUUôL CÚdÏm.
Be¡p θ ¸úZ RWlThÓs[Õ.
– ªuÑt±p ùNpÛm ªuú]ôhPm I ªL
X − X
θ = tan − 1 C L V
R A§LUôL CÚdÏm dÏ NUUôL CÚdÏm.
R
RLC ùRôPo ªuÑt±p ªuú]ôhPm – ªuÑt±u ªuú]ôhPm 'I', ùNÛjRlTÓm
A§LThNUôL CÚdL úRûYVô] ªu]ÝjRm 'V'dÏ CuúTv³p CÚdÏm
¨TkRû] (Condition at which current through the (ARôYÕ úTv úLôQm = 0)
RLC series circuit is maximum) : ãj§Wj§XõÚkÕ
CkR ϱl©hP @lÃdÏYu£ûV f r
2 2
Z = R + (X − X L ) ¬VôdPuv X = X BL ùWùNô]v @lÃdÏYu£ Guß
C
L
C
CÚdÏmúTôÕ ªuÑt±u ùUôjR Cm©Puv AûZdLlTÓ¡\Õ.
ÑjRUô] ªuRûPVôL (Resistance) UhÓúU ¸rdLiP @lÃdÏYu£«p ùWùNô]v
CÚdÏm. CkR ¨ûX«p ªuÑt±u EiPôÏm.
Cm©Puv 'Z' ÑjRUô] ªuRûPVôL X = X ApXÕ 2 fL = 1/2 fC
C
L
CÚlTÕ UhÓUpXôUp ªLd Ïû\YôLÜm 1
CÚdÏm. 2 f π L = 2 π fc
'L' Utßm 'C' «u ¬VôdPuv @lÃdÏYu£ûV
ùTôÚjÕs[Rôp £X ϱl©hP G]úY ùWùNô]v @lÃdÏYu£
@lÃdÏYu£«p f CuPd¥q ¬VôdPuv f = 1 HZ
r
r 2π LC
ùLlTô£h¥q ¬VôdPuvdÏ NUUôL
CÚdÏm. AÕ úTôu\ NUVeL°p ªuÑt±u

144 TYo : GXdh¬μVu (NSQF - Revised 2022) R.T. Ex.No. 1.5.46