How does active stall control work to adjust power in high winds?
What will be an ideal response?
Active stall turbines regulate power by increasing pitch to stall conditions once rated power is achieved. The power is maintained at a constant level by moving the blades in and out of stall conditions.
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One way of estimating masonry cement is by calculating the number of cubic feet per _____ square feet of wall area.
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Which of the following motors is the best installation choice for an application requiring adjustable speeds?
a. Shunt DC b. Split-phase AC c. Synchronous AC d. Capacitor-start AC
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Find the present worth at time 0 of the chrome plating costs shown in the cash flow diagram. Assume i = 10% per year.
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Find the exponential Fourier series for the waveform in Fig. 17.53.
 figure 1.png)
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