The advantage of the backward curved centrifugal fan over the forward curved centrifugal fan is that

A) backward curved fans are normally quieter in operation
B) backward curved fans are non-overloading
C) backward curved fans operate at lower RPMs
D) backward curved centrifugal fans are well suited for small airflow quantities


B

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A(n) ____________________ is a junction of two dissimilar metals which produces a small voltage that changes as the temperature changes.

Fill in the blank(s) with the appropriate word(s).

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List five theories on the origin of agriculture and provide a brief explanation of each

What will be an ideal response?

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231 cubic inches = 1 gallonCubic inches / 231 = gallons7.5 gallons in one cubic footCubic feet ´ 7.5 = gallonsWater weighs 62.5 pounds per cubic foot.Cubic feet ´ 62.5 = pounds of waterWater weighs 8.33 pounds per gallon.Gallons ´ 8.33 = pounds of waterCubic centimeters / 1,000 = litersA cubic meter is 1,000 litersA liter of water weighs 1 kilogram.One kilogram = 2.2 poundsA cubic meter of water weighs 1,000 kilograms or one metric ton.Carry the answer to two decimal places. A spherical tank has a volume of 1000 cubic inches.What is the volume in gallons?

Fill in the blank(s) with the appropriate word(s).

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Three-in-one diagnostic tools are being discussed. Technician A says the Snap-on Modis can be configured to include a scan tool, a DSO, and an exhaust gas analyzer. Technician B says the OTC Genisys can be configured to include a scan tool, a DSO, and an exhaust gas analyzer. Who is correct? 

A. Technician A B. Technician B C. Both A and B D. Neither A nor B

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