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Question 36806

posted 1 years ago

What is the equation of motion for a dynamic system best described as: (1%)
b) A time dependent algebraic equation.
a) A homogeneous second order differential equation.
c) A trigonometric transcendental equation.

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Question 36797

posted 1 years ago

33. Describe what is a soft tower strength? (2%)

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Question 36765

posted 1 years ago

1. Which energy source has the most significant change (increase or decrease) over the five-year span. (1%)
c) Biomass
e) Wind power
b) Coal
d) Hydropower
a) Nuclear
f) Solar power

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Question 36780

posted 1 years ago

16. What is the values of foundation (rotation and horizontal) stiffnesses assumed for wind turbine? (1%)
a) 60 GN-m/rad and 10 Mn/m
b) 50 GN-m/rad and 1000 Mn/m
c) 1000 GN-m/rad and 50 GN-m/rad

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Question 36790

posted 1 years ago

26. Define the turbulence intensity, Iv (show equation): (3%)

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Question 36791

posted 1 years ago

27. The two fundamental turbulence types for atmospheric wind are: (2%)
a)
b)

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Question 36789

posted 1 years ago

25. Explain the difference between Prandl layer and Ekman layer: (2%)

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Question 36784

posted 1 years ago

20. Show the three equations for calculating the wind tower vibration frequencies using the Rayleigh's Method: (3%)

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Question 36768

posted 1 years ago

4. Describe different wind load scenarios based on conditions. (3%)topological

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Question 36807

posted 1 years ago

B. Label the three damping scenarios for a SDOF system: (3%)

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