A penstock supply pipe has straight segments of 8 ft. 4 in., 15 ft. 7 in., 23 ft. 5 in., and 16 ft. 9 in. The total length of straight pipe needed for this penstock is:?
A. ?62 ft.
B. ?63 ft.
C. ?63 ft. 9 in.
D. ?64 ft. 1 in.
Answer: D
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What schematic symbol is shown in the accompanying figure?
a. Normally Open Pushbutton
b. Normally Closed Pushbutton
c. Double Acting Pushbutton
d. Overload Heater
A magnesium alloy contains the following volumes of each element: 341.2 cubic decimeters of magnesium, 30.96 cubic decimeters of aluminum, 488.0 cubic centimeters of manganese, and 672.0 cubic centimeters of zinc. Find the percent composition by volume of aluminum. Round the answer to the nearest hundredth percent.
Fill in the blank(s) with the appropriate word(s).
Why should the door safety switch be checked before leaving the job?
A) The furnace will operate inefficiently if the door switch opens while it is operating B) To insure the permanent jumper is secure C) Nuisance return calls are likely if you fail to permanently disable the door switch D) To prevent combustion gasses from being circulated in the house
The U-value is 1/R-value.
Answer the following statement true (T) or false (F)