What advantages can an integrated computer offer in a greenhouse over a staged controller?
What will be an ideal response?
More exact control of the environmental settings in the greenhouse,
energy conservation, and better growth.
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Two 5-ohm resistors are placed in series in a 10-amp circuit. What is their total resistance?
A) 10 ohms. B) 10 watt-ohms. C) 10 watts.
Hybrid bermudagrass is a heavy feeder and may require as much as 1 pound of nitrogen per 1,000 ft2 per growing month
Indicate whether the statement is true or false
The subsequent problems deal with the switched RC circuit below. Assume that the capacitor has no charge to begin with, and assume that VA and VB are constant dc voltages.
Immediately after the switch is closed (i.e., the circuit is not in steady state yet), what is the correct expression for VR, given the polarity shown?
A. VB ? VA B. 0 C. VA ? VB D. VA E. VB
The availability of "standard" communicating components and an open protocol means that more manufacturers can use communicating controls, opening the market up. This was demonstrated at the 1996 ASHRAE show in Atlanta, when multiple controllers from several major manufacturers were up and operating, all connected to the same ________ system
A) BACnet B) standard protocol C) ClimateTalk D) climate