MWS CCRE EXAM QUESTIONS AND ANSWERS

MWS CCRE EXAM QUESTIONS AND ANSWERS Which equation is used to determine the elevation pressure loss for resupplying a pumper located approximately 20 feet above the location of the MWS? - Answer-EP = 0.5x20 The best definition of water pressure is the: - Answer-Force of water per unit area. All of the following factors must be included when determining the total pressure loss (TPL) EXCEPT: - Answer-Pump pressure loss The hand method can be used for estimating the friction loss in a hoseline with a diameter of: - Answer-2 1/2 inches Large diameter hoses are generally defined as hoses with a diameter between: - Answer-4-6 inches. When a dry supply line is being charged, it is important to open the: - Answer-Bleeder valve. One of the drawbacks of a piston positive displacement pump is the: - Answer-Fire stream tends to pulsate. To correct for lateral thrust wear on parts in centrifugal pumps, the pump: - Answer-Has water enter the impeller in both directions. NFPA 1901 requires that an MWS apparatus that uses medium diameter hose (MDH) supply lines for filling should have at least ________ external fill connection (s) piped directly to the tank: - Answer-One. Narrow roads - Answer-Difficulty passing other vehicles and the possibility of getting the apparatus tires off the road surface. Long driveways - Answer-When two apparatus approach from opposite directions, one may be forced to back out. Blind curves and intersections - Answer-Driver/operator cannot see oncoming cross traffic and drivers of non-emergency vehicles cannot see oncoming apparatus. Winding roads - Answer-Require a lot of concentration on the part of the driver/operator; one slight slip can result in a collision. Steep grades - Answer-Brake fade can result in the driver/operator being unable to slow or stop the apparatus. Inclement weather conditions - Answer-Roads may not be clear; there may be debris that should be avoided. When a fire scene is located down a narrow lane, it is BEST to locate the dump site: - Answer-At the intersection where the lane meets a thoroughfare. When operating a water shuttle operation involving a fill site pumper with 2 1/2-inch fill lines, what is the recommended total number of make and break personnel that should be involved? - Answer-2. At a fill site, a cone or similar device is used to: - Answer-Mark the stopping point for an MWS apparatus. The type of dump site operation in which MWS apparatuses dump water into independent tanks and the dump site pumper drafts water from the tanks and supplies the attack apparatus is referred to as a: - Answer-Portable water tank operation. At a water shuttle operation, the second and subsequent mobile water supply apparatuses may leave the dump site once: - Answer-Their entire load has been dumped. The MOST efficient method of transferring water between portable water tanks is to: - Answer-Use jet siphons. All of the following are methods of water discharge used at the dump site EXCEPT: - Answer-Draining. To determine the handling time in a flow rate calculation, add the fill site time and the dump site time, including the time spent: - Answer-To position the MWS apparatus at the fill and dump sites, to make and break, and to fill and dump. At a water shuttle operation, the amount of water dumped is the amount of water the tank holds less: - Answer-10%. During an MWS apparatus inspection, the lowest acceptable fuel gauge reading is: - Answer-At least 3/4-full. During the vacuum service test, the system vacuum and pump priming device should achieve a column of mercury of at least: - Answer-22 inches. Most jurisdictions prefer to draft from a static water source during service testing because it: - Answer-Is a true test of the pump's ability. It is recommended that fuel, oil, and mileage records be updated: - Answer-As determined by the jurisdiction. Identify THREE conditions where you should drive an MWS apparatus in low gear. - Answer-1. Traveling around a corner. 2. Approaching an intersection. 3. Climbing a hill. When driving through intersections requiring a stop, you must perform all of the following steps EXCEPT: - Answer-Turn on the flashers to indicate you are crossing. Identify THREE important reasons for knowing the dimensions of the MWS apparatus you are driving. - Answer-1. So you are sure it will fit in a designated parking area. 2. So you know whether it can travel under a specific overpass. 3. So you don't hit any obstructions or obstacles. You should NEVER back an apparatus: - Answer-If you don't have at least one spotter. All of the following statements about static water sources are true EXCEPT: - Answer-The static water source closest to the incident should always be used first. Traditional strainer - Answer-Must have at least 24 inches of water above this type of strainer or the water above the strainer will whirlpool. Floating strainer - Answer-May get around the 24-inch minimum depth with this type of strainer but the filter can only draw water from the bottom.