A walk-in freezer is located in the basement and the 1-1/2 HP condensing unit is located at the back of the building on the roof 3 stories above the basement. The tech has 20’ of horizontal piping in the basement and 30 feet of vertical piping to the roof. What size is the horizontal pipe in the basement?
a. 5/8” b. 7/8” c. 1-1/8”
b. 7/8”
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Raising the height ?of a low-head hydro dam by 4 ft., raises the energy possessed by 1 pound of water:
A.
?
ft-lb
ft-lbB.
?
ft-lb
ft-lbC.
?4 ft-lb
D.
?16 ft-lb
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In the GHS, product hazard classes are identified by symbols called _____.
a. visual keys b. pictograms c. anagrams d. pictographs
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Solve the following Ohm's Law problems:
Fill in the blank(s) with the appropriate word(s).
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A three-phase two-pole motor contains ____ actual poles.
A. two B. three C. four D. six
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