Wind Distribution Table Analysis

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Questions and Answers

What is the unit of measurement for mean speeds in the graph?

  • m/s^2
  • m^3s^-3
  • m/s (correct)
  • m^3/s

How are the wind speed values presented in the station descriptions?

  • Using a smooth curve
  • In graphical form
  • In tabular format (correct)
  • As a periodic cubic spline

What does the radial extent of the circle segments in the middle left graph represent?

  • Relative frequencies of wind directions (correct)
  • Total mean speed
  • Normalization of wind speeds
  • Mean wind speeds

What is used as a reference in calculating the spectrum below?

<p>Mean or reference day (A)</p> Signup and view all the answers

Which type of curve is used to plot the results obtained for each standard hour?

<p>Periodic cubic spline (C)</p> Signup and view all the answers

What must values read from the graph be multiplied by?

<p>A scale factor given to the left (D)</p> Signup and view all the answers

What do the full lines represent in the graph for January and July?

<p>Mean wind speeds (B)</p> Signup and view all the answers

What represents a mean or reference day used in calculating the spectrum below?

<p>Mean days for each calendar month (C)</p> Signup and view all the answers

What is the standard deviation of wind speed in m/s for the station at 10.0 m above ground level?

<p>2.3 m/s (D)</p> Signup and view all the answers

What is the mean wind speed in m/s for the station at 11.0 m above ground level?

<p>3.5 m/s (B)</p> Signup and view all the answers

At what height above ground level is the mean wind speed 2.4 m/s?

<p>11.0 m (C)</p> Signup and view all the answers

What is the cube value for the station at 10.0 m above ground level in m^3/s^3?

<p>110.m^3/s^3 (C)</p> Signup and view all the answers

During which year were measurements taken in Reims, France?

<p>1970-79 (C)</p> Signup and view all the answers

In which month did the station at 11.0 m above ground level record a cube value of 110.m^3/s^3?

<p>January (A)</p> Signup and view all the answers

What was the maximum wind speed recorded during week 5?

<p>63 (D)</p> Signup and view all the answers

Flashcards

Unit of mean speeds

Meters per second (m/s).

Wind speed presentation

Wind speed values are presented in a tabular format.

Circle segments radial extent

They represent the relative frequencies of wind directions.

Spectrum calculation reference

A mean or reference day is used as a reference.

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Curve type for plotting

A periodic cubic spline is used to plot the results obtained for each standard hour.

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Graph value multiplication

Values must be multiplied by a scale factor given on the left of the graph.

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Full lines in graph

Mean wind speeds for January and July.

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Mean wind speed at 11.0m

Mean wind speed is 3.5 m/s.

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Reims Measurements Year

1970-79

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