When a DDC control system is used, the occupancy period control is found in the _____
a. zone sensor
b. zone controller
c. DDC software EXE file
d. main control panel
b
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Indicate whether the statement is true or false.
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Indicate whether the statement is true or false.
Geothermal heat pumps will ____________________ heat from the Earth and transfer it to the conditioned space in the winter and ____________________ the heat that is absorbed from the conditioned space in the summer to the Earth.
Fill in the blank(s) with the appropriate word(s).
At what location during the power stroke does the crank throw provide maximum mechanical leverage?
A. Whenever the cylinder pressure is maximum. B. Whenever the compression pressure is maximum. C. From 15 degrees ATDC to 90 degrees ATDC. D. When the throw is positioned 90 degrees ATDC.