In a peer-to-peer network, a discrete input such as an outdoor air sensor _____
a. must be attached to the central computer for sharing
b. needs to be attached to only one controller and shared
c. must be attached to each device that requires the information
d. cannot be used; all inputs must be of the analog type
b
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Figure 15-2
In the accompanying figure, why is there a dashed line around the condenser fan motor and overload symbol, and around the evaporator fan motor and overload symbol?
What will be an ideal response?
With regard to blasting, how are explosives employed and how are they made?
What will be an ideal response?
La protección mínima contra sobrecorriente que se debe utilizar en circuitos ramales para artefactos pequeños es de:
a. 10A. b. 15A. c. 20A. d. 30A.
A truck cooling system operates in a sequential order. Which of the following is the last in the chain of events?
A. The fan hub is actuated. B. The shutterstat opens the shutters. C. The thermostat begins to open. D. The fanstat is triggered and sends a signal to lock up the fan hub.