What is the heating value of propane? A. 1,050 btu/cubic ft, B. 120,000 btu/cubic ft C. 138,500 btu/cubic ftm D. 3,200 btu/cubic ft E. 2,500 btu/cubic ft
What type of electricity do PV cells convert sunlight into initially? (choose 2) A. alternating current, B. galvanic current C. direct current, D. pulsating current E. variable current
What type of solar system relies on the natural convective circulation of water? A. concentrated solar, B. thermosyphon C. active closed loop, D. amorphous silicon cell
Which of these two types of solar panels provides the most efficient application of solar energy? Answer Solar thermal (left), used to heat water, is a more efficient application than converting solar to electricity with photovoltaics (right). ARE 4.0 exam prep: BS