Fire Apparatus Driver/Operator - MWS Module 5 (Water Shuttle Operations)

Venturi Effect correct answer: When fluid is forced under pressure through a restricted orifice, there is a decrease in the pressure exerted against the side of the constriction increase in the velocity of the fluid. Because the surrounding air is under greater pressure, it rushes into the area of lower pressure. Jet Assisted Dumps Disadvantages correct answer: 1. The apparatus must be equipped with a fire pump 2. The fire pump must be engaged before dumping the water from the tank. 3. If the pump is not operating, water will be discharged at a considerably lower rate. 4. They increase the cost of purchasing the apparatus. Knowledge Check #4 IFSTA recommends that regardless of the water source, an MWS apparatus at all fill site operations be filled by: correct answer: A. Another MWS apparatus B. A pumping apparatus (Correct Answer) C. An ARFF apparatus D. A swimming pool fill truck Knowledge Check #5 When you arrive at the fill site, you should be instructed to pull the MWS apparatus: correct answer: A. Adjacent to the cone at the point where the driver's side door window is opposite the cone - (Correct Answer) B. Adjacent to the cone at the point where the passenger's side door window is opposite the cone C. Behind the cone at the point where the cone is centered just in front of the MWS apparatus D. In front of the cone at the point where the cone is centered just behind the MWS apparatus Knowledge Check #6 If some MWS apparatuses being filled have MDH tank fill intakes and others have LDH tank fill intakes, the best hose lay for the fill site operation is: correct answer: A. Two MDH supply lines with gate valves