Which of the following will shorten the life of a filament in an incandescent lamp?
a. Operating at cooler temperatures
b. Operating at warmer temperatures
c. Frequently turning it on and off
d. The use of a photosensor
b. Operating at warmer temperatures
Trades & Technology
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The _____ is a special instrument or ruler that the architect uses to dimension drawings.
A. contractor's gauge B. scale rule C. architect's scale D. mason's rule
Trades & Technology
The distinction between a tunnel and a culvert is _____.
a. shape b. length c. the size of the passage d. the construction method
Trades & Technology
Companies that produce, use, store, and/or transport radioactive materials might have a signal-generating system that can warn of the need for evacuation.