Explain how a centrifugal circulating pump creates flow in the hydronic system.
What will be an ideal response?
The centrifugal pump is responsible for creating a pressure difference between the water at its inlet and the water at the outlet of the pump. It is this pressure differential that makes the water flow through the piping circuit.
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When batteries are connected in series, their voltages will ____, and the amp-hour rating will ____.
a. add, remain the same b. add, add c. remain the same, add d. remain the same, remain the same
Answer the following statement(s) true (T) or false (F)
Drip caps are installed along the bottom edge of the windows
Fluorescent lamps all contain ____ and should be recycled to avoid contaminating landfills.
A. PVC B. lead C. mercury D. carbon monoxide
Liquid achieves its boiling point:
A) When the vapor point of the gas bubbles in a liquid becomes lower than the pressure surrounding the liquid. B) It is below its critical pressure. C) When the vapor point of the gas bubbles in a liquid becomes equal to the pressure surrounding the liquid. D) When the liquid has reached its critical mass.