Question
Download Solution PDFWhich of the following lamps is suitable for highway lighting?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDF- Sodium vapor light lamps are most suitable for highway lighting because they emit yellow light which is the easiest color to recognize in the night or darkness.
- It can last up to 24,000 hours, which is about four times as long as mercury vapor lamps and 24 times as long as incandescent lamps.
- It does not require frequent replacement or cleaning, which reduces labor and disposal costs.
- It can produce up to 150 lumens per watt, which is about twice as much as mercury vapor lamps and five times as much as incandescent lamps.
Application of different lamps:
|
Types of Lamp |
Application |
|
Neon lamps |
visual indicators in electronic equipment and appliances |
|
Fluorescent lamps |
commercial lighting, industrial lighting, classroom lighting, |
|
Sodium vapor lamp |
roadways, parking lots, security areas, airports, goods yards |
|
Carbon arc lamp |
cinema projector, searchlight, flash camera |
Last updated on Jul 1, 2025
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