The basic operation of a(n) ____ is to pass current in one direction only.
a. inverter
b. rectifier
c. converter
d. transformer
b. rectifier
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Feng Seawater Desalination Systems has estabÂlished a capital investment limit of $800,000 for next year for projects that target improved recovery of highly brackish groundwater. All projects have a 4?year life and the MARR is 10% per year. (a) Select any or all of the projects. (b) Project Z is a favorite of Mr. Feng. Determine the minimum NCF necessary to make Z the economically best project. (c) Use a spreadsheet to answer the two parts above.
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A piece of copper bus bar is 1 centimeter thick by 8 centimeters wide. Find the cross-sectional area of the bus bar.
Fill in the blank(s) with the appropriate word(s).
Given a set of steps with standard-size bricks used to cover the riser and tread surfaces of a flight of concrete stairs if each tread measures 12" deep by 48" wide and each riser is 8" high, how many bricks are needed to cover four treads? (Refer to the diagram on page 63 in the book.)
What will be an ideal response?
Which statement about positive-pressure ventilation is correct?
a. it requires the use of a build in HVAC system b. it uses a smoke ejector to draw smoke out of a building c. it can be used only under favorable wind conditions d. it should be used only if attack crews have access to all fire