engineering recuitment NMDC Junior Officer (Trainee) Mock Test 2024 Utilization of Electrical Energy Lamps and Bulbs
In the case of average lifespan which of the following is CORRECT ?
1
LEDs > Incandescent lamp > CFLs
2
Incandescent lamp > CFLs> LEDs
3
CFLs > LEDs > Incandescent lamp
4
LEDs > CFLs> Incandescent lamp