?The final products of all clean-burning hydrocarbon flames are ____.

A. ?oxygen and carbon
B. ?carbon dioxide and hydrogen
C. ?water vapor and oxygen
D. ?water vapor and carbon dioxide


Answer: D

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Provide at least three examples of standard parts.

What will be an ideal response?

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A 20-k?/V voltmeter reads 10 V full scale,

(a) What series resistance is required to make the meter read 50 V full scale? (b) What power will the series resistor dissipate when the meter reads full scale?

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To avoid the creation of oxides in the refrigeration lines of mini-split systems, the lines are assembled:

A) Using Reflok fittings. B) By brazing the connections while flowing nitrogen through the lines. C) Using standard flare fittings. D) Using heavy-walled flare fittings.

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What was the first PLC released?

A. Modicon 084 B. PDQ-11 C. Simatic S4 D. Series 6

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