PUMPING APPARATUS DRIVER OPERATOR HANDBOOK CHAPTER 7 - THEORETICAL PRESSURE CALCULATIONS|UPDATED&VERIFIED|GUARANTEED SUCCESS

The current formula for friction loss accounts for the diameter of the hose, the volume of water flowing, and the: Select one: a. expected time. b. level of elevation. c. distance of fire stream. d. length of the hose layout. See page 212 d. length of the hose layout Which is the correct customary formula for determining pump discharge pressure? Select one: a. Nozzle pressure plus total pressure loss b. Nozzle pressure divided by total pressure loss c. Elevation loss plus friction loss minus nozzle pressure d. Friction loss plus elevation loss multiplied by total pressure loss See page 218 a. Nozzle pressure plus total pressure loss Which BEST describes friction loss for handline nozzles? Select one: a. 25 psi (175 kPa) for all appliances b. 10 psi (70 kPa) loss for each appliance c. Generally considered to be insignificant d. Generally considered to be one-half of rated loss See page 213 c. Generally considered to be insignificant Which of the following is the formula for friction loss? Select one: a. FL= CQ&squared;L b. FL= CL&squared;Q c. FL= CQ&squared;L × 2 d. FL= CQ&squared; ÷ L See page 212 a. FL= CQ&squared;L When using multiple hoselines of equal length and diameter, loss calculations: Select one: a. can be estimated. b. are too difficult to perform. c. must be made for both lines. d. need only be made for one line. See page 215 d. need only be made for one line. When determining friction loss in a wyed hoseline in which the hoselines have the same nozzle pressure, hose length, and diameter: Select one: a. calculations can be estimated. b. calculations are too difficult to make. c. both of the wyed hoselines need to be considered. d. only one of the wyed hoselines need to be considered. See page 215 d. only one of the wyed hoselines need to be considered. Pump discharge pressure must be sufficient to overcome: Select one: a. all pressure loss. b. 50 percent of pressure loss. c. at least 75 percent of pressure loss. d. 125 percent of all pressure loss. See page 218 a. all pressure loss. Total pressure loss includes friction loss and elevation pressure loss combined with the loss associated with: Select one: a. appliances. b. evaporation. c. variation in temperatures. d. improper use of equipment. See page 210 a. appliances. For which of the following is a nozzle pressure of 80 psi (560 kPa) a safe and efficient nozzle pressure? Select one: a. Fog nozzle b. Low pressure fog nozzle c. Solid stream nozzle (handline) d. Solid stream nozzle (master stream) See page 219 d. Solid stream nozzle (master stream) For which of the following is a nozzle pressure of 50 or 75 psi (350 or 525 kPa) a safe and efficient nozzle pressure? Select one: a. Fog nozzle b. Low pressure fog nozzle c. Solid stream nozzle (handline) d. Solid stream nozzle (master stream) See page 219 b. Low pressure fog nozzle Which customary formula would be used to conduct elevation pressure loss calculations on the fireground? Select one: a. 0.10 × Height in feet b. 0.25 × Height in feet c. 0.5 × Height in feet d. 1.0 × Height in feet See page 214 c. 0.5 × Height in feet