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

1. Direct current is used for various electrochemical processes, including electroplating, refining of copper and aluminum, electrotyping, production of industrial gases by electrolysis, and charging of storage batteries.
2. A basic knowledge of trigonometry is essential to an understanding of alternating-current concepts.
3. If the generator has two pairs of poles, then a cycle is generated every half-revolution, or 2 hertz per second.
4. Alternating-voltage waveforms are all sine waves.
5. In electronics, the frequencies used cover a very narrow range.


1. True
2. True
3. True
4. False
5. False

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

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a. Slot
b. Spot
c. Seam
d. Stud
e. Surfacing

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a. e-mail b. search engines c. blogs d. digital cameras

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Indicate whether the statement is true or false

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