Identify two factors that limit the amount of electrical energy produced by PV solar systems
What will be an ideal response?
The number of hours the sun shines in the location the panels are mounted at.
The number of cloudy days or days with overcast skies.
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The first step in the cost control process is assembling cost data for use in estimating future jobs.
Answer the following statement true (T) or false (F)
Why does a walk-in refrigerator evaporator freeze up from too much load or door open?
a. Not enough off-cycle to defrost the coil. b. The evaporator gets too cold trying to pull down the load. c. The condensing pressure gets too high and floods the evaporator.
Why is sunburn more likely to occur at high altitudes as compared to sea level?
A) There is less ozone above to block the UV rays B) It is colder at high altitudes and sunburn is therefore less likely C) There is less oxygen D) You are closer to the sun
What is used in propane and CNG to make it smell so leaks can be detected?
A) Ethanol B) Butane C) Methane D) Ethyl mercaptan