A small residential solar energy system may need an electronic inverter if ______
a. The solar energy system is used to charge batteries in the home, and all the loads in the home require AC voltage.
b. The solar energy system produces AC voltage that will need to be converted to DC voltage.
c. The solar energy system produces hot water that needs to be converted to heat energy to augment
the heatingsystem for the home.
d. All the above.
A
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There are a few specialized schools in the United States that teach ____________________.
Fill in the blank(s) with the appropriate word(s).
Carry the answer to three decimal places. A set of 2-inch-wide by 
-inch-thick carbon brushes fits the brush holders too tightly. It is necessary to take 
inch off the width and 0.015 inch off the thickness by sanding. Give in decimal form the thickness dimension of the carbon brushes after sanding.
Fill in the blank(s) with the appropriate word(s).
When is the Y terminal energized on most heat pump thermostats?
A) Anytime the system is energized B) In first stage cooling only C) Both first-stage heating and cooling D) In first stage heating only
Define specific volume.
What will be an ideal response?