engineering recuitment DRDO Technician A 2022 Mock Test Series (Tier I) Utilization of Electrical Energy Illumination
Which of the following statement is true regarding Neon lamps?
1
These are of the size of ordinary incandescent lamps
2
Have the power consumption of the order of 5 W
3
Are used as the indicator lamps, the night lamps, and for the determination of the polarity of DC mains
4
All of the above