A wind generator (mass 120 kg) with a 9.15 m-diameter blade span has a cut-in wind...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
A wind generator (mass 120 kg) with a 9.15 m-diameter blade span has a cut-in wind speed (the minimum speed for power generation) of 3.13 m/s, at which the velocity the turbine generates 0.4 kW of electric power. Assume p of air as 1.217 kg/m3. Determine (a) the efficiency of wind turbine-generator unit and (b) the reaction force exerted on the wind by the supporting mast of the wind turbine if the frictional effects are disregarded. %3D Streamline utm F, Wgenerator y A wind generator (mass 120 kg) with a 9.15 m-diameter blade span has a cut-in wind speed (the minimum speed for power generation) of 3.13 m/s, at which the velocity the turbine generates 0.4 kW of electric power. Assume p of air as 1.217 kg/m3. Determine (a) the efficiency of wind turbine-generator unit and (b) the reaction force exerted on the wind by the supporting mast of the wind turbine if the frictional effects are disregarded. %3D Streamline utm F, Wgenerator y
Expert Answer:
Related Book For
Posted Date:
Students also viewed these chemical engineering questions
-
The drag force exerted on a car by air depends on a dimensionless drag coefficient, the density of air, the car velocity, and the frontal area of the car. That is, FD = function (CDrag Afront, , V)....
-
The drag force exerted on a car by air depends on a dimensionless drag coefficient, the density of air, the car velocity, and the frontal area of the car. That is, F D = F D (C drag , A front , , V)....
-
If all frictional effects are neglected, the expression for the angular acceleration of the simple pendulum is = g/l cos , where g is the acceleration of gravity and l is the length of the rod OA....
-
In its income statement for the year ended December 31, 2020, Bramble Company reported the following condensed data. Operating expenses $754,570 Interest revenue $28,440 Cost of goods sold 1,339,800...
-
Use Table VII of Appendix A to find the following probabilities: a. P(x2 1.063623) for df = 4 b. P(x2 > 30.5779) for df = 15 c. P(x2 82.3581) for df = 100 d. P(x2 < 18.4926) for df = 30
-
The National Center for Health Statistics published the following data on the leading causes of death in 2010 in National Vital Statistics Reports. Deaths are classified according to the tenth...
-
Star \(\mathrm{Co}\). is considering the installation of new equipment for its warehouse. The equipment has an initial cost of \(\$ 600,000\) and an expected useful life of ten years. It is assumed...
-
You are one of five risk-neutral bidders participating in an independent private values auction. Each bidder perceives that all other bidders valuations for the item are evenly distributed between...
-
1.Kelly, Inc. management is considering purchasing a new machine at a cost of $4,133,250. They expect this equipment to produce cash flows of $814,322, $863,275, $937,250, $1,017,112, $1,212,960, and...
-
Consider the sensorless version of the erratic vacuum world. Draw the belief-state space reachable from the initial belief state {1, 2, 3, 4, 5, 6, 7, 8}, and explain why the problem is unsolvable.
-
The university is expanding from three classes to three hundred classes. Enrollment is expected to increase from around 20 students to 5,000. The supervisors are not very tech savvy, but a database...
-
BAREBELLS Protein Bars, the best balance of taste, low sugar and fat content, minimal calories and high protein content. Antah Pusaka Berhad is considering a proposal to manufacture BAREBELLS Protein...
-
A scooter moving at 5 0 m / s travels towards a siren which emits a 1 9 7 Hz sound. The speed of sound is 3 4 3 m / s . What frequency ( in Hz ) is heard by the scooter driver?
-
A Canadian company has a calendar year end. On January 1, the company borrowed $500,000 U.S. dollars. The loan is to be repaid in four years, and interest at 8% to be paid every December 31. The loan...
-
An equation of an ellipse is given. (a) Write the equation of the ellipse in standard form (b) Identify the center, vertices, endpoints of the minor axis, and foci. Express numbers in exact, simplest...
-
Different management levels in Bates Inc. require varying degrees of cost accounting information. Because of the need to comply with the managers requests, three ways of variances analysis for...
-
The following estimated regression equation is based on 30 observations. 17.9+3.7x1-2.2x2 +7.6x3 + 2.824 The values of SST and SSR are 1,808 and 1,758, respectively. a. Compute R (to 3 decimals). b....
-
Estimate a range for the optimal objective value for the following LPs: (a) Minimize z = 5x1 + 2x2 Subject to X1 - x2 3 2x1 + 3x2 5 X1, x2 0 (b) Maximize z = x1 + 5x2 + 3x3 Subject to X1 + 2x2 +...
-
For each of the following studies, give the parameter of interest and state any assumptions that are necessary for the inferences to be invalid. a. To investigate a possible link between jet lag and...
-
Refer to the Kansas State study designed to investigate the effects of plants on human stress levels, Exercise. Recall that finger temperatures for each of ten students in a dimly lit room were...
-
With mound-shaped data, what proportion of the measurements have z-scores between 3 and 3?
-
Stock markets are merely casinos allowing speculators to get rich while doing nothing for ordinary people like you and me. Write an essay explaining why you agree or disagree with this statement.
-
Describe the shifts in UK share ownership over the past 60 years. Suggest some reasons for the changes.
-
Describe what a badly run stock exchange would be like and explain how society would be poorer as a result.
Study smarter with the SolutionInn App