Page 155 - Electrician -1st Year - TT

ùRôPÚm 'W' p ªuú]ôhPm RûX¸ZôL V = I X c
c
C
Uô± ÁiÓm úSoUû\ (+ve) Nôo_õe B¡\Õ
V V
Utßm ùLlTô£hP¬u ¥vNôo_õe ARu I c = c , X c = c
RhÓ ØÝYÕm UôߧûN emf CÚdÏm YûW X c I c
ùRôPÚm.
ARôYÕ,
UôߧûN emf JÚ ùLlTô£hPÚdÏ RWlTÓm
I GuTÕ ùLlTô£hP¬p ùNpÛm
c
úTôÕ ùLlTô£hP¬u ªuú]ôhPm ªuú]ôhPj§u A[Ü Bm©V¬Ûm,
RWlTÓm emf ûV 90° Øk§f ùNpÛm (leads)
CÕ Fig 9 þp Lôi©dLlThÓs[Õ. CÕ V C ùLlTô£hP¬p ªu]ÝjRm
Fig 10 þp Es[ úT^oL[ôp úYôph¥Ûm,
LôhPlThÓs[Õ. X ùLlTô£hP¬p G§o ®û[Ü BÏm. CRû]
c
Kªp ϱl©PlTÓ¡\Õ.
Fig 9
ERôWQm (Example): 10 ûUdúWô @TôWh
ùLlTô£hPo 250V Utßm 50Hz Es[ ªu
CûQl©p CûQdLlTÓ¡\Õ. AlùTôÝÕ
GqY[Ü ªuú]ôhPm ùNp¡\Õ GuTûRd
LiÓ©¥?

Fig 10
1
= = 318.3 ohms
2× 3.14× 50 × 10× 10 − 6

250
Current (IC) = = 0.785A
318.3
ùLlTô£hP¬u G§o ¨LrÜ (Capacitive
reactance): ùLlTô£hP¬p ªuú]ôhPm ùLlTô£Puv UhÓm Es[ ªuÑt±u
TônYRtÏ G§olûT ùLôÓlTûRúV NWôN¬ ªuNd§ (power) ' 0' YôÏm. ªuú]ôhPm
ùLlTô£hP¬u G§o ¨LrÜ Gußm CRû] Utßm ªu]ÝjRm B¡V Yû[ÜL°p
Xc Gu\ ϱd¡u\]o. ùLlTô£hP¬u G§o CÚkÕ ªuNd§ (power) Yû[ûY YûWVXôm.
¨LrÜ LQd¡Óm Øû\: (Fig 11).
çnûUVô] ùLlTô£h¥q ªuÑt±u TYo
1 1
X C = = Yû[Ü Fig 11þp Lôi©dLlThÓs[Õ.
2π fC ωc
Fig 11
ARôYÕ,

2 H\dÏû\V 6.28 U§lTôÏm.
f GuTÕ AûXÜ Gi (frequency) Hz Guß
ϱlTo.
C GuTÕ ùLlTô£Puv Utßm = 2. .f.

CuPdP¬p ϱl©hPÕ úTôp CuPd¥q
¬VôdPuv X Utßm ùLlTô£hP¬u G§o
L
®û[Ü X BÏm. CûY CWi¥u AXÏm Km
c
BÏm. Km ®§ûV ùLlTô£hPo UhÓm
ùLôiP ªuÑtßdÏm TVuTÓjRXôm.

TYo : GXdh¬μVu (NSQF - Revised 2022) R.T. Ex.No. 1.5.45 135