Skip to main content

Fluorescent lamp output

What percentage of light output is lost when a bare fluorescent lamp is exposed to a temperature of 32deg Fahrenheit (0 Celsius)?
A. 10%, B. 25%
C. 35%, D. 50%


AnswerD. 50 percent. Wrap-around clear lenses are recommended for protection from wind and low temperatures. Vapor tight fixtures can maintain temperatures above the outside ambient temperature.
are-review.blogspot.com

 Related reading: the Precast Concrete Institute publishes several resources for parking facility lighting and recommended practices for exterior applications.

Comments

Post a Comment

Try These Too!

Bolted connections

What is the minimum spacing of bolts specified by AISC? and preferred spacing? A. 1 1/4 times the diameter of the bolt; 2 times preferred B. 1 3/4 times the diameter of the bolt; 2 1/4 times preferred C. 2 1/3 times the diameter of the bolt; 2 2/3 times preferred D. 2 2/3 times the diameter of the bolt; 3 times preferred E. 3 times the diameter of the bolt; 3.25 times preferred
Post a Comment
See the answer »

Roof pitch

Which one of the following slopes in this illustration corresponds with an 8:12 pitch roof? A. 45° B. 36.87° C. 33.69° D. 26.57°
Post a Comment
See the answer »

Building Efficiency

Convert the usable area of classrooms planned with medium efficiency level of new construction to the gross building area given the following model factors: Net Assignable Square Feet: 10,000, Space Factor: 1.5, Building Efficiency Ratio: 67%
6 comments
See the answer »