A __________ is used to determine the presence of unburned fuel in a sample of flue gases taken from an oil burner.

A. draft gauge
B. pressure gauge
C. smoke tester
D. vacuum gauge


Answer: C

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What will be an ideal response?

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Mainline pressure on a CVT can exceed ________.

A) 500 PSI (3,450 kPa) B) 900 PSI (6,200 kPa) C) 750 PSI (5,200 kPa) D) 2,000 PSI (13,800 kPa)

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A force of 22,125 pounds pulls on a steel rod that has a diameter of 0.900 inches. Find the force pulling on one square inch of the cross-sectional area. Round the answer to the nearest pound.

A. 31,026 B. 33,083 C. 34,778 D. 41,823

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