Question 4An energy efficient house in Barcelona is to be fitted with a rooftop PV array that willannually displace all the 3600 kWh/yr of electricity that the home uses.How many kW (DC, STC) of panels will be required and what area will be needed(assuming crystalline silicon modules with a nominal efficiency of 12.5%)?Assume that the roof is south-facing with moderate title angle. The panels will bemounted at the same angle as the roof, which means a shallow pitch. The yearaverage roof insolation is 4.60 kWh/m2/day and assume an DC-AC conversionefficiency of 75%.

Maximum solar energy falling on roof per day = 4.60kWh/m2 Maximum solar energy falling on roof per…

Answered: Question 4 An energy efficient house in…

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Part C Compact fluorescent bulbs are much more efficient at producing light than are ordinary incandescent bulbs. They initially cost much more, but last far longer and use much less electricity. According to one study of these bulbs, a compact bulb that produces as much light as a 100 W incandescent bulb uses only 23.0 W of power. The compact bulb lasts 10000 hours, on the average, and costs $12.00, whereas the incandescent bulb costs only $0.74, but lasts just 750 hours. The study assumed that electricity cost $0.090 per kilowatt-hour and that the bulbs were on for 4.0 h per day. How much do you save over 3.0 years if you use a compact fluorescent bulb instead of an incandescent bulb? Express your answer in dollars. $ Submit Previous Answers Request Answer X Incorrect; Try Again; 9 attempts remaining Part D What is the resistance of a "100 W" fluorescent bulb? (Remember, it actually uses only 23 W of power and operates across 120 V.) Express your answer in ohms. ? R = Submit Request…
B2. Advance maths
For g, can you explain how did they got Vr = Vc?
1.a. An unintentional electrical path that's conducting current from an ungrounded conductor to a normallynoncurrent-carrying metal raceway would be defined as a groundA. conductor.B. fault.C. electrode.D. interrupter. 1.b. It's important for designers and installers to ensure that equipment ground-fault current paths have________, which will facilitate the tripping of the overcurrent protective device.A. low impedanceB. proper labelingC. high impedanceD. an equilibrium
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