Alternative energy sources include _____

a. coal
b. petroleum
c. natural gas
d. nuclear energy


d

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Direct current is an electron flow in only one direction.

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

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A ____ is used to change AC to pulsating DC and increase the output voltage of a circuit.

a. low-power circuit b. transformer c. cathode ray d. voltage multiplier

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____ indicates that the switch contains only one movable contact.

a. Make-before-break b. Single throw c. Break-before-make d. Single pole

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Match each item with a statement below.

A. Waste from lavatories, showers, tubs, and laundries, which can be treated on or off site and reused for filling toilets and certain types of irrigation B. Chemically similar to PVC with added chlorine to increase rigidity at high temperatures, making it suitable for hot water piping C. Made by cross-linking, or knitting together long chains of ethylene in a process that allows the material to be both strong and flexible at high temperatures D. Made with a combination of both long and short molecules that provide a combination of strength and flexibility E. Waste that comes from toilets and kitchens containing food waste F. An alternative plastic pipe

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