HTS superconductors may lead to larger and more effective use of ____________________ wind-generation systems.

Fill in the blank(s) with the appropriate word(s).


direct-drive
direct drive

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Mortar is the first material you use when laying any masonry unit.

Answer the following statement true (T) or false (F)

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Needle valves are used for fine flow control because _____.

a. the shape provides a gradual increase or decrease in the size of the valve opening b. they are very inexpensive c. they are made of stainless steel d. they exhibit high head loss

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An element in an electric heating unit is connected to a 232-V power supply. The current flow through the element is 19 A. What is the resistance of the element?

A. 8 ? B. 10 ? C. 12 ? D. 14 ?

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Calculate the time for one cycle of an alternating wave if the frequency is measured at 120 Hz.

What will be an ideal response?

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