What is the difference between high-pressure and low-pressure sodium lamps?
What will be an ideal response?
The high-pressure sodium lamp is available with power ratings from 35 to 1000 watts with the light output varying from 1250 to 140,000 lumens. Lamp life varies from 10,000 to 24,000 hours. Color rendition is poor, but color discrimination is possible. The low-pressure sodium lamp has a power rating that varies from 18 to 180 watts and light output from 1800 to 33,000 lumens. Lamp life ranges from 14,000 to 18,000 hours. The light output and the life are excellent, but color discrimination is void, everything appearing the same color: yellow. People parking in the lot would not be able to identify their automobiles by color.
You might also like to view...
Flexible brake hose should be inspected for all of the following EXCEPT ________
A) Worn outer ribs B) Cracks C) Leakage D) Twisted
What is the correct vent size for a 50,000 BTU/hr input induced draft furnace with a 15 foot lateral run and a 30 foot vent height?
What will be an ideal response?
A state diagram is
A) a diagram showing different inputs and outputs. B) the same as a schematic. C) a map. D) a truth table.
What are print or construction drawing with dark reddish-brown lines on a light background?
A. MEP B. blueline prints C. copies D. sepia drawings