railway DFCCIL Junior Executive 2023 (CBT 1 & CBT 2) Mock Test General Knowledge Science Technology and Inventions
What is the primary purpose of the 'Tri-Netra' system in trains?
1
To provide better lighting inside the train.
2
To enhance the speed of the train.
3
To detect obstructions on railway tracks and prevent mishaps.
4
To improve the aesthetics of the train.