A square wave voltage varies between 0 V and 12 V. The positive pulses are 75 ?s wide and there is a 25 ?s gap between them. What is the DC average of the waveform?
A. 3 V
B. 4 V
C. 6 V
D. 9 V
Answer: D
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Off-the-farm agricultural jobs are those jobs requiring ____________________ skills but are not
regarded as farming or ranching.
Fill in the blank(s) with the appropriate word(s).
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One of the methods of electrical interlocking is accomplished with the use of double-acting push buttons.
Answer the following statement true (T) or false (F)
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The process used to appraise the interior quality of table eggs is called candling.
Answer the following statement true (T) or false (F)
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Which of the following is not one of the stamping operations that produces blanks?
A. cutting off B. shearing C. trimming D. blanking
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