Page 313 - Electrician -1st Year - TT
P. 313
CûR ¸úZ RWlThÓs[ ãj§Wj§uT¥ §\ûUVô] JüõVûUl©]ôp TQjûR
A[®PXôm. úNªdL CVÛm.
Luminous flux in lumen ERôWQUôL ( Example): JÚ 60 Yôhv
Luminous efficiency =
Power in watt ªu®[dÏ ùTôÕYôL 860 íUuvLû[
EtTj§ ùNnÙm. íª]v ®û]j§\û]
TVuTÓjRlThP ªuNôWj§tÏ GqY[Ü
LQd¡PÜm.
Jüõ ùY°YkÕs[Õ GuTûR Jl©hÓ
TôolTÕ ªLÜm Ød¡VUô]RôÏm. Luminous flux in lumen
So, efficiency =
íª]v ®û]j§\û] Power in watt
LQd¡ÓYRtLô] LôWQm (Purpose of cal-
860
culating luminous efficiency) = = 14.3 lumen/watt
60
JÚ Ï±l©hP ÅÓ ªuNôW ©pXõp 30
NRÅRjûR JüõdLôL ùNXY¯d¡\Õ.
TYo : GXdh¬μVu (NSQF - Revised 2022) R.T. Ex.No. 1.9.82 293
