If the rooftop unit utilizes gas heat, what two processes have to be considered in the installation of the unit?
What will be an ideal response?
Venting for flue gases and combustion air for proper fuel burning.
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A device that is used to step up generated voltage to make it suitable for commercial transmission is called a _____.
a. power transformer b. current transformer c. potential transformer d. grounding transformer
_______ costs reflect more than simply the worker's hourly wage
Fill in the blank(s) with correct word
An air conditioning system employing chilled water reset __________________
A. the chilled water temperature set-point is raised during high load periods B. the chilled water temperature set-point is lowered during high load periods C. is not limited by the rise in chilled water temperature leaving the evaporator D. Both B and C
A system is described by 
Classify the system as to linearity, time invariance, memory, causality, and stability.
What will be an ideal response?