1. About how much peak power per square meter does the sun deliver to the surfac
ID: 2036900 • Letter: 1
Question
1. About how much peak power per square meter does the sun deliver to the surface of the Earth when the sun is high in the sky on a clear sunny day? a. 100 W b.11,000 W c. 10,000 W d. 100,000 w 2. In "Energy for Future Presidents", Muller points out that the best-case scenario for solar power systems when one averages over night and day, and takes seasonal variations and weather-caused intermittency into account is only aboutof the system's peak power rating. b. 2596 d, 65 % a. 10% C. 40 % 3. In "Energy for Future Presidents", Muller points out that average mass-produced silicon solar photovoltaic cells have an efficiency of a. about 20 %. b, about 40 %. c, about 60%. d, about 80 %. 4. The amount of power that can be extracted from moving air (wind) is directly related to a. the wind's velocity. b. the square of the wind's velocity. c. the cube of the wind's velocity. d. the wind's velocity to the fourth power. 5. (Choose the best two answers) In "Energy for Future Presidents", Muller emphasizes that wind turbines are getting larger and larger because a. the average wind velocity is much higher at higher altitudes b. larger turbines are easier to assemble. and c. larger turbines are deemed less of an eyesore by the public. d. modern wind turbines are already very efficient at extracting energy from moving air so the only way to make more energy is to have larger turbines that intersect more moving airExplanation / Answer
Q1.
it is 1000 W correct (from data analysis)
Q2.
b. 25%
A square mile of solar panels has the potential to generate 2.6 gigawatts which reduces down to about a gigawatt due to the 42% efficiency. This further goes down to 250 watt per square meter because the average solar power is only 25% of the peak. He then goes on to discuss two types solar energy source.
Q3.
About 20%
The proficiency of the sun oriented cells utilized as a part of a photovoltaic framework, in blend with scope and atmosphere, decides the yearly vitality yield of the framework. For instance, a sun oriented board with 20% proficiency and a region of 1 m2 will create 200 W at Standard Test Conditions.
Q4.
the cube of the wind's velocity
Wind power is normally harvested through the use of very tall wind turbines to take advantage of higher velocity winds at higher elevations and long blades to increase surface interaction with wind. Wind power increases as a cube of the wind velocity: doubling the wind speed results in 8 times the power.
Question 5) 1 answer is choice A
The most vital factor in wind vitality generation is wind speed (see beneath), and in many zones normal breeze speed increments consistently with stature, inferable from less turbulence and ground drag. A higher pinnacle implies more breeze yet it is more costly to construct .
Question 5) second answer is Option D
Wind control is an inexhaustible asset, however the rate of its reestablishment is limited and, in a few regards, nearly little.
The vast majority of the active vitality that drives wind turbines begins with the age of accessible potential vitality at planetary scales, which powers twists all through the environment.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.