5 "art III: Computation Questions (21 points total) -(4') Suppose the I-V curve for a PV module exposed to 1-sun (1 kW/m²) of insolation is as shown below in Figure 1: 1-sun = 1000 w/m² Current (amps) 1 4 ° 0 2 4 6 8 10 12 14 16 V (volts) Figure 1 18 18 Time Insolation (W/m²) 8A.M., 4P.M. 200 9,3 400 10, 2 600 11, 1 800 noon 1000 20 22 Daily total 5000 W-hr/m² Table 1 a. What load resistance R would result in the maximum power delivered from the module at 1-sun? How much power would that be (watts)? b. Suppose the hour-by-hour insolation striking this single module is given in the above Table 1 (e.g., from 7:30 A.M. to 8:30 A.M. the insolation averages 200 W/m2). If current (at any given voltage) is directly proportional to insolation, carefully draw the hour-by-hour I-V curves for the module. c. For the resistive load determined in (a), what would be the energy (watt-hr) delivered by this module in a day's time? d. If the module is equipped with a maximum-power-point tracker, what energy would be delivered in a day's time? What percentage improvement does it provide?