Section 2: Top-Down Energy Planning ( 31 pts)

● The voltage and current at the terminals of an automobile battery during a charge cycle are shown below a. Calculate the total charge transferred to the battery. b. Calculate the total energy transferred to the battery. v (V) 15 10 5- i (A) 30 20 10 5 5 10 15 20 25 10 15 20 25 t (ks) t (ks)

The numerical values for the currents and voltages in the circuit are given Find the total power developed in the circuit. a ia ib b - Vb + a Element b ic d f C + Vc Voltage (V) -8 -2 10 10 -6 ial -4 7 Current (A) -7 d 15 5 3 3 Vd e f + Vf

1) A load consisting of a 452 resistor, a 502 inductor and a 302 capacitor in series. The source is at 120 V (rms). Find the following. a) The source current (in phasor form). b) The real and reactive power consumed by the load. a) 5 points b) 5 points Z = R + j(X₁Xc) = 4+j2 V₂ 1=¼/= I = 24-j12= 26.83Z-26.57° A Z S = V₁I* = 2880 +j1440 P = 2880 W, Q = 1440 Var

5. Suppose a power plant has a nameplate capacity of 1 GW and a capacity factor of 0.8. If it operated for 1 full year, how much energy would it generate? (1 pt)

You can start discussion by answering the following questions and later replying or commenting on at least one of your peers' replies. Please keep online civility as per the instructions in the syllabus. Your answer and reply should be to the point and within three sentences maximum. Question 1: How is population growth affecting the natural resources of the world? Question 2: Among the conventional energy resources i.e. fossil based energy which one do you favor and why?

You can start discussion by answering the following questions and later replying or commenting on at least one of your peers' replies. Please keep online civility as per the instructions in the syllabus. Your answer and reply should be to the point and within three sentences maximum. Question 1: What are the benefits of hydropower? Question 2: How does a hydroelectric power station impact the environment?

2) The voltage and current of a Y-connected load are: Vab=25/15°V, Ic = 10275⁰ A Find the total real power consumed by the load. Note: read the subscripts of the voltage and current carefully. Ve Vc: 5 points P30: 5 points 25 √3 P36 = 3. Vab √3 P30 = 3|vc||1c| cos 25 √3 25 √3 00v. 01 105° - 75° = 30° €490° <15° +90° 10.cos(30°) = -Z105° = 375 W consumed by the load.

You are a newly-hired energy planner for the city of Exampleville. Mayor Bigshot has decided that the city should become energy-independent, and has asked your supervisor, Bossperson, for a report discussing different options for doing so. Bossperson has tasked you with performing some calculations and discussing the strengths of different options based on those calculations. 6. There are 100,000 homes in Exampleville, and the average home has the following daily power demand profile. Each hour is an hour in a day, and "Watts" describes the average power demand during that hour:/nHour 1 Watts 600 Hour Watts 2 600 3 600 600 800 67 8 1000 1100 1200 1200 1000 1000 9 10 11 12 1200 13 14 15 16 17 18 19 20 21 22 23 24 1000 1000 1100 1500 1600 2200 4500 2200 1800 1000 800 600 a. How much energy in kWh does the average home use in a 24 hour period? (1 pt) b. How much energy in kWh does the average home use in 365 days? (1 pt) c. How much energy, in MWh, do all of the city's homes combined use in 365 days? (1 pt) d. Exampleville has several options for generating electrical power, each with different characteristics, listed below:

You can start discussion by answering the following questions and later replying or commenting on at least one of your peers' replies. Please keep online civility as per the instructions in the syllabus. Your answer and reply should be to the point and within three sentences maximum. Question 1: How do you define energy and power? Question 2: What's your thoughts on energy use and its effect?

You can start discussion by answering the following questions and later replying or commenting on at least one of your peers' replies. Please keep online civility as per the instructions in the syllabus. Your answer and reply should be to the point and within three sentences maximum. Question 1: What do you think of "Global Warming"? Question 2: If you are the top leader (i.e. president/prime minister/king/ameer etc.) of your own country, what you'll do to make the country more sustainable?