Static pressure readings are taken on a duct system by:
A) Subtracting the velocity pressure from the total pressure.
B) Pointing the pressure-sensing tube into the airstream.
C) Subtracting the total pressure from the velocity pressure.
D) Pointing the pressure-sensing tube perpendicular to the air stream.
D
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Many commercial and industrial complexes use a(n) ____________________ to heat water that is supplied to heat transfer devices that condition the air in a structure or zone.
Fill in the blank(s) with the appropriate word(s).
What are the types of wheat?
What will be an ideal response?
To test the static air leakage rate you should
Air brake
What could happen to an analog meter if a voltage is tested that exceeds the setting on the meter?
A) A coded series of beeps will indicate to the technician that the reading exceeds the meter setting. B) The meter will display "OL" to indicate the reading is out of range. C) The meter can be damaged. D) The meter will protect itself by not reading the voltage, and no reading will be displayed.