Which control algorithm is typically used in HVAC equipment when the controlled variable changes slowly over time?

a. P
b. PI
c. PID
d. PIE


b. PI

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All of these are important convenience factors except.

A) Payment methods B) Size of parking lot C) Size of buildinig D) Hours of operation

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Which of the following would not necessarily describe a product that has undergone Incremental Innovation?

A. Better B. Cheaper C. Faster D. Bigger

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Coolant is water and ________

A) Methanol B) Kerosene C) Glycerin D) Ethylene glycol

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What represents what you typically think of as the color?

A. hue B. texture C. intensity D. rhythm

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