Question

The amount of energy available in the wind

is proportional to ___ of the wind speed.

(A) Square root power of two

(B) Square root power of three

(C) Square power

(D) Cube power

and prove the answer?

Answer #1

An energy company wants to choose between two regions in a state
to install energy-producing wind turbines. A researcher claims
that the wind speed in Region A is less than the wind speed in
Region B. To test the regions, the average wind speed is
calculated for 60 days in each region. The mean wind speed in
Region A is 13.9 miles per hour. Assume the population standard
deviation is 2.8 miles per hour. The mean wind speed in Region...

An energy company wants to choose between two regions in a state
to install energy-producing wind turbines. A researcher claims that
the wind speed in Region A is less than the wind speed in Region B.
To test the regions, the average wind speed is calculated for
60days in each region. The mean wind speed in Region A is 13.7
miles per hour. Assume the population standard deviation is
2.8miles per hour. The mean wind speed in Region B is...

Two alternative energy Solar energy and Wind energy work
simutlaneously generate power each 2.5MW. if the solar intensity is
600 W/m2 and photovoltaic = 12,5%, module with size 80
cm x 50 cm. While wind turbine is diameter 25 m, velocity of te
wind 12 m/s with turbine efficienct 40% then find:
a) Total of modules that is needed
b) Total of panels, if each panels consists of 16 modules
c) Total of wind turbines needed
Assumed wind at standard...

A wind power system rated at 800 kW with mean annual wind
speed of 7 m/se. The
capital investment cost is $500,000 with additional
installation, infrastructure and
financing at 30% of the capital cost. The operation and
maintenance, insurance, and land
lease is at 5% of capital cost. The interest rate is at 4%.
Assume the total annual energy
product is 980,000 KWH, determine the power generation cost of
a 10 years repayment
and 20 years repayment. Assume the energy...

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An energy company wants to choose between two regions in a state
to install energy-producing wind turbines. A researcher claims that
the wind speed in Region A is less than the wind speed in Region B.
To test the regions, the average wind speed is calculated for
6060
days in each region. The mean wind speed in Region A is
13.713.7
miles per hour. Assume the population standard deviation is
2.82.8
miles...

The global cumulative installed wind power capacity in 2013 was
approximately 300GW, The world energy consumption per year was 529
Quad BTU. (1QuadBTU= 1015 BTU; 1BTU=1055J, 1TJ=3.6 GWh). Assuming
an average capacity factor being 40%, determine the ratio of wind
energy produced compared to energy demand per year.
Show clear working out using unity method
Answer: 0.7%

According to kinetic-molecular theory, in which of the following
gases will the root-mean-square speed of the molecules be the
highest at 200C?
A) Cl2
B) H2O
C) SF6
D) HCl
E) None. The molecules of all gases have the same
root-mean-square speed at any given temperature

A 3 phase alternator derived by wind Turbine is designed to
generate a maximum of 400kw at wind speed of 15 m/s. The internal
generated voltage of the alternator at rated rotor speed is Eo= 480
v/phase, and the synchronous reactance of the alternator is 1.0
ohm. The output of the alternator is connected to an infinite
busbar of 420 v/phase through transmission lines that have
reactance of 10 ohm per phase. Draw the per phase equivalent
circuit of the...

Can a low barometer reading be used to predict maximum wind
speed of an approaching tropical cyclone? For a random sample of
tropical cyclones, let x be the lowest pressure (in millibars) as a
cyclone approaches, and let y be the maximum wind speed (in miles
per hour) of the cyclone.
x
1004
975
992
935
981
926
y
40
100
65
145
75
147
(c) Use a calculator to verify that
x = 5813,
x2 = 5,636,767,
y =...

(a) Compute the root-mean-square speed of a nitrogen molecule at
99.1°C. The molar mass of nitrogen molecules (N2) is 28.0×10-3
kg/mol. At what temperatures will the root-mean-square speed be (b)
1/3 times that value and (c) 2 times that value?

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