engineering recuitment RVUNL Technician III Mock Test Series 2025 Utilization of Electrical Energy Lamps and Bulbs
A room of dimensions 12 m × 16 m is to be lighted by 24 lamps of uniform illumination of around 100 lm/m2. If the output of each lamp is around 1600 lumens, what will be the utilization factor of the room?
1
0.4
2
0.6
3
0.45
4
0.65
5
0.5