railway DFCCIL Junior Executive 2023 (CBT 1 & CBT 2) Mock Test Utilization of Electrical Energy Illumination
Which of the following is NOT an example of a discharge lamp?
1) Neon gas lamp
2) Tungsten filament lamp
3) Mercury vapor lamp
4) Fluorescent lamp
1
Only 2
2
Only 4
3
2 & 4
4
1, 3 & 4