Page 176 - Electrician -1st Year - TT

Fig 6 V
¡û[ ªuú]ôhPm I =
2 Z
2

V 240
= = 10 amps ªu]ÝjRj§tÏ 90°
X 24
L
lagging p CÚdÏm.
V
¡û[ ªuú]ôhPm I =
3 X
R 0 3
g = 2 2 = 2 = 0
2
Z 2 24 240
= = 5 amps ªu]ÝjRj§tÏ 90° leading p
48
R 0
g = 3 = = 0 CÚdÏm.
3
Z 3 2 48 2
ùUôjR ªuú]ôhPm I = I 2 + (I − I ) 2
¡û[ Ñt±u NvùNlPuv (Susceptance in T 1 2 3
branch cirucits)
2
2
= 8 + (10 − 5) = 89
X 0
b = 1 2 = 2 = 0 = 9.43 amps
1
Z 1 30
Uôt\ôL
X 24 1 I = VY = 240 x 0.03928
T
b = 2 2 = 2 = = 9.43 Amps
2
Z 2 24 24
I
= 0.04167 siemens G
iv §\uLôW¦ (Power factor) = = = R
- X - 48 1 Y I T
b = 2 3 = 2 = -
3
Z 1 - 48 48 0.0333 8
= - 0.02083 siemens = 0.03929 = 9.43
ii ùUôjR LuPdPuv (Total conductance) = 0.848.
G = g + g + g
1 2 3
= 0.0333 + 0 + 0 §\uLôW¦«u úLôQm = 32° lagging
= 0.0333 Siemens. v ªuÑtß GÓjÕdùLôsÞm ªuNd§
= VI Cos
ùUôjR NvùNlPuv B = b + b + b
1 2 3 = 240 x 9.43 x 0.0848
= 0 + 0.04167 + (– 0.02083)
= 1919 Watts
= 0.02084 Siemens.
1
Y = G + B 2 ùUôjR Cm©Puv (impedence) Z = Y
2
2
= 0.0333 + 0.02084 2 1
= 0.03928 Siemens. 0.03929 = 25.5.ohms

V CkR ®ûPLû[ ùYdPo Øû\«p
iii ¡û[ ªuú]ôhPm I =
1 Z ùT\lThP ®ûPLÞPu N¬TôdLÜm.
1

V 240
= = = 8 amps ªu]ÝjRj§tÏ
R 30
CuúTv³p CÚdÏm.

156 TYo : GXdh¬μVu (NSQF - Revised 2022) R.T. Ex.No. 1.5.49