engineering recuitment BSPHCL Technician (Electrician) 2024 Mock Test Utilization of Electrical Energy Illumination
Which of the following is NOT true about Space/Height Ratio in illumination?
1
It is ratio of horizontal distance between two lamp to mounting height of lamp
2
It depends on the nature of the polar curve of lamp
3
It used only in application of sodium vapour lamp
4
For indoor lighting value of this ratio lies between 1 and 2