What are slip rings? Where are they used on a wind turbine?
What will be an ideal response?
Slip rings are conducting rings and brushes that allow electrical connection between the rotating nacelle and the fixed tower to transmit power from the generator. Not all wind turbines use slip rings.
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? Identify and state the historical significance of William H. Seward.
What will be an ideal response?
Spray pressures needed to control turfgrass weeds, insects, and diseases are less than about __________
Fill in the blank(s) with correct word
Compared to the bulk soil in which the earthworms live, earthworm casts contain:
A) more sand and silt. B) less of most plant-available nutrients. C) more nitrogen but less of other plant-available nutrients. D) more of most plant-available nutrients. E) less organic matter.
What are the two general categories of humidifiers?
A) Wet and dry B) Those that rely on heated air and those that supply their own energy to evaporate water C) Packaged and split system D) Condensing and noncondensing