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26 Sep 2019

We know that wind power is a non-conventional source of energy but there are some limitations associated with it. Discuss the limitations.

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Jarrod Robel
Jarrod RobelLv2
28 Sep 2019
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Related questions

Which of the following statements about using geothermal energy is not true?

  1. Geothermal energy is a non-conventional source of energy

  2. Geothermal energy is used as a fuel for vehicles

  3. Geothermal energy is used to generate electricity

  4. Geothermal energy is the internal heat of the earth

  1. Only source of BOD in a river is untreated wastes that are being discharge from a food processing plant. The characteristics of untreated waste is not reported for the environmental protection agency of the town . To identify the waste water property from the processing plant the authority measured the DO of the river at 10km and 40km away from the plant and found 5mg/l and 2.5mg/l respectively. The average flow rate of the river is 0.25m/s and average depth is 4.5m with bed activity coefficient of 0.2.assume saturation DO 10mg/l
  1. Only source of BOD in a river is untreated wastes that are being discharge from a food processing plant. The characteristics of untreated waste is not reported for the environmental protection agency of the town . To identify the waste water property from the processing plant the authority measured the DO of the river at 10km and 40km away from the plant and found 5mg/l and 2.5mg/l respectively. The average flow rate of the river is 0.25m/s and average depth is 4.5m with bed activity coefficient of 0.2.assume saturation DO 10mg/l

ParameterĀ  Ā  Ā  Ā  Ā  Ā  riverĀ  Ā  Ā waste waterĀ Ā 

Flow,m3/sĀ  Ā  Ā  Ā  Ā 0.7Ā  Ā  Ā  Ā  Ā  Ā  0.23

BOD @ 18Ā°CĀ  Ā  Ā  Ā  2.5Ā  Ā  Ā  Ā  Ā  Ā N/A

DO, mg /lĀ  Ā  Ā  Ā  Ā  Ā  Ā 8Ā  Ā  Ā  Ā  Ā  Ā  Ā N/A

TemperatureĀ  Ā  Ā  Ā 20Ā  Ā  Ā  Ā  Ā  Ā  20

K @ 20Ā°cĀ  Ā  Ā  Ā  Ā  Ā  Ā -Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  0.23

a. What is the DO and BOD of the untreated waste form the processing plant?Ā 

b. What is the critical DO and where downstream does it occur?

c. If the state requirement for minimum DO is 2mg/l is assimilative of the river restricted or not ?

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