Describe benefits to using timers, motion sensors, and occupancy sensors in residential electrical systems.
What will be an ideal response?
These devices are not only convenient and provide added safety, but they also reduce electricity consumption. There’s another big reason to use lighting controls in house wiring and that’s energy efficiency codes are increasingly becoming the law of the land and these devices need to be installed to help meet the energy code requirements.
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What happens in the HEUI fuel pump chamber when the plunger PRIME recess registers with the pump chamber spill port?
A. chamber recharge B. plunger retracts C. pressure collapse D. end of injection
When communicating risk, the message should inform and:
a. entertain b. intimidate c. persuade d. inspire
Repeat Problem 15-19 for an urban freeway in rolling terrain.
What will be an ideal response?
Many species of birds have life spans of 50 to 100 years
A. True B. False