Pump Operations and Hydraulics - Chapter 11 || Already Passed.

Lift can be described as the difference in elevation between the surface of the static water supply and the? A: Nozzle. B: Fire scene itself. C: Center of the pump intake. D: Highest point on the fire apparatus. correct answers C: Center of the pump intake. During the process of drafting, which of the following results in water being forced into the hose and pump because of a partial vacuum created in the pump? A: Pressure in the intake hose and pump equals atmospheric pressure. B: Pressure in the intake hose and pump fluctuates more than ten percent. C: Pressure in the intake hose and pump drops to lower than atmospheric pressure. D: Pressure in the intake hose and pump increases to higher than atmospheric pressure. correct answers C: Pressure in the intake hose and pump drops to lower than atmospheric pressure. When drafting, water is forced in and continues to rise until the pump is full of water or...? A: Pressure within the pump and intake hose begins to vary. B: Pressure within the pump and intake hose equals atmospheric pressure. C: Pressure within the pump and intake hose is less than atmospheric pressure. D: Pressure within the pump and intake hose is greater than atmospheric pressure. correct answers B: Pressure within the pump and intake hose equals atmospheric pressure. Which of the following statements about the theoretical lift is most accurate? A: Maximum lift at a given altitude will be less than theoretical lift. B: Maximum lift at a given altitude will be the same as theoretical lift. C: Maximum lift at a given altitude will be greater than theoretical lift. D: Maximum lift at a given altitude may be either greater or less than theoretical lift. correct answers A: Maximum lift at a given altitude will be less than theoretical lift. Theoretical lift can be calculated by determining the actual atmospheric pressure of an area and? A: Adding that number to the water's pressure per square foot *kPa) while it is in the intake hose. B: Subtracting that number from the water's pressure per square foot (kPa) while it is in the intake hose. C: Dividing that number by the water's pressure per square foot (kPa) while it is in the intake hose.