Driver Operator Exam Prep for Fire Department Apparatus Solved 100%

A fire apparatus with a primary purpose of transporting 1,000 or more gallons of water is considered to be a/an? - ANSWER-Tanker/Tender Checking for voltage, electrolyte level, and corrosion are all steps in inspecting? - ANSWER-The battery Proper _______ is one of the prime objectives of good maintenance. - ANSWER-Lubrication An ammeter indicates the? - ANSWER-Both b and c are correct. -Amount of current flowing into the battery -Amount of current being taken from the battery Which of the following conditions could be found while doing routine maintenance on a battery? - ANSWER-A and B only are correct. -Loose tie-downs -Corrosion around the battery connections Batteries produce explosive _____ gas when being charged. - ANSWER-Hydrogen In an acceptance test, a fully loaded pumper must be able to accelerate to 35 mph in _____ seconds. - ANSWER-25 The dry vacuum test requires a reading at the end of 5 minutes during which no more than _____ inches of vacuum should be lost. - ANSWER-10 Before an apparatus response from the station, the driver/operator should? - ANSWER-Assure that everyone is seated and belted When driving under winter conditions, the driver/operator should follow at a greater distance because the distance to stop on snow and ice is increased _____ times. - ANSWER-3 to 15 Over-throttling occurs in diesel engines when more fuel is injected than can be burned. Which of the following is NOT a result of over-throttling? - ANSWER-Overheating of engine coolant If an apparatus begins to skid, the driver/operator should? - ANSWER-Turn the apparatus steering wheel so the front wheels face the direction of the skid Engine brakes, which assist in braking, are activated when? - ANSWER-Pressure is released from the accelerator 1.When approaching an intersection, the driver/operator should slow the apparatus to a speed of 10 to 15 mph to allow reaction time. 2.The apparatus should be brought to a complete stop if there are any obstructions that block the driver's view. 3.There is no need to slow the apparatus for a green light intersection. - ANSWER-Statement 1 is incorrect; Statement 2 is correct; Statement 3 is incorrect The angle from the rear point of ground contact of the rear tire to any projection of the apparatus behind the rear axle is considered? - ANSWER-Angle of departure Operating engines below the minimum coolant temperature may result in? - ANSWER-Inefficient operation The engine brake and retarder are activated when? - ANSWER-Pressure is released from the accelerator All fire apparatus should be equipped with _____ when the apparatus is backing up. - ANSWER-An alarm system that warns others When an apparatus driver is faced with a situation requiring evasive tactics, the driver should attempt to pass the overtaken vehicle on? - ANSWER-The left side On sharp curves or when turning corners, apparatus drivers should shift standard transmissions into a _____ gear _____ entering the curve or intersection. - ANSWER-Lower, Before The purpose of the diminishing clearance driving skill is to measure a drivers ability to? - ANSWER-Steer apparatus in a straight line In emergency incidents that occur near railroad tracks, the driver/operator should? - ANSWER--Always treat the tracks as an active line, -Park the apparatus on the same side of the tracks as the incident The use of warning devices is essential when responding to an alarm, and in doing so? - ANSWER-Does not allow the driver to disregard other drivers The type of pumper which is usually equipped with four-wheel drive and typically has a pump with a capacity of less than 500 gpm is known as a? - ANSWER-Minipumper While conducting a pump capacity test, if the net pump pressure is correct but the nozzle flow (gpm) is too high, the? - ANSWER-Discharge gate must be closed further while the throttle setting is reduced simultaneously The 50% pump capacity test is conducted at a net pump pressure of? - ANSWER-250 psi for 10 minutes When priming, water enters the pump because? - ANSWER-Atmospheric pressure forces it into the pump The _____ on an impellar are curved away from the direction of rotation so that the natural movement of water will carry it to the edge. - ANSWER-Vanes The device that limits pressure surges by changing engine speed to compensate for changes in flow is called a? - ANSWER-Pressure governor Which type of flowmeter is relatively maintenance free? - ANSWER-Spring probe In a _____ hydrant, a small drain valve opens as the hydrant is closed. - ANSWER-Dry-barrel Two main types of modern fire hydrants are? - ANSWER-Wet and Dry-barrel The purpose of the _____ is to provide circulating feed from several mains. - ANSWER-Grid System _____ inches is considered the minimum size pipe to be used for residential areas. - ANSWER-6 _____ inch pipe is the recommended minimum size for fire hydrant supply mains in business and industrial areas. - ANSWER-8 As a standard practice, it is undesirable to reduce incoming supply pressure below _____ psi. - ANSWER-20 The pressure remaining once water has begun flowing is known as _____ pressure. - ANSWER-Residual A hydrant with the largest capacity will be one that is connected to a? - ANSWER-Primary feeder A one-square inch column contains water to a height of 100 feet. What is the pressure in psi at the base of the column? - ANSWER-43.4 The operation in which each impeller of a centrifugal pump discharges into a common outlet is known as? - ANSWER-Parallel A 2 1/2 inch fog nozzle flowing 225 gpm at a pressure of 100 psi will have a reaction of approximately _____ pounds? - ANSWER-114 A good method for determining lift in a fire department pump is that for each _____ of indicated vacuum, water will rise _____. - ANSWER-Inch, One foot A ladder pipe with a 2 inch tip at 80 psi nozzle pressure will have approximately _____ pounds of nozzle reactions. - ANSWER-500 Approximately how much water will be delivered from a 1 1/4 inch smooth bore nozzle if the nozzle pressure is 50 psi? - ANSWER-328 gpm The flow from a 1 inch nozzle tip with a nozzle pressure of 50 psi is approximately _____ gpm. - ANSWER-210 What is the friction loss in 300 feet of 2 1/2 inch rubber lined hose flowing 350 gpm? (coefficient = 2) - ANSWER-74 psi What is the friction loss in 400 feet of 3 inch hose with 2 1/2 inch couplings, flowing 400 gpm. (coefficient = .8) - ANSWER-51 psi What is the approximate engine pump pressure that is necessary to deliver 600 gpm through a fog nozzle on a deck gun using three 2 1/2 inch lines? The lines are 400 feet long and the deck gun is elevated 20 feet above the pumper. (C = 0.2) (Deck gun FL = 10 psi) - ANSWER-150 psi If the friction loss in 300 feet of hose is 70 psi, what will the friction loss be in 450 feet of the same size hose, flowing the same amount of water? - ANSWER-105 psi The recommended nozzle pressure for 2 1/2 inch hand lines with solid bore tips is _____ psi. - ANSWER-50 The amount of work that a pump must do to produce a fire stream is called _____ pressure. - ANSWER-Net-pump When the flow through a hose line increases from 100 gpm to 400 gpm, the friction loss increases _____ times. - ANSWER-16 Nozzle reaction is explained by the law of physics that states? - ANSWER-For every action there is an equal and opposite reaction What engine pump pressure is necessary to deliver 200 gpm through 200 feet of 2 1/2/ inch hose to a fog nozzle at ground level? - ANSWER-116 psi The formula for the nozzle reaction of a solid stream nozzle is? - ANSWER-NR = 1.57d^2NP Using the condensed Q method as a rule of thumb, the friction loss in 500 feet of 3 inch fire hose flowing 300 gpm is? - ANSWER-45 psi When a pumper is supplying four lines of 2 1/2 inch hose, each equipped with a 250 gpm fog nozzle at 100 psi, and each 300 feet long, the pump discharge pressure required is most nearly? - ANSWER-138 psi Which of the following formulas is used to determine the area of a circle? - ANSWER-Pie r squared Excessive engine temperatures during pumping operations can be controlled by using the? - ANSWER-Auxiliary cooler Prior to changing from tank water to an external source? - ANSWER-Make sure all air is bled from the intake Which primer utilizes the venture principle? - ANSWER-Exhaust primer An apparatus equipped with a 1,000 gallon tank that is supplying two preconnected handlines, one flowing 150 gpm and another flowing 100 gpm will supply the lines for only _____ minutes? - ANSWER-Four A relief valve bypasses excess water from the discharge side of the pump to the ? - ANSWER-Pump intake The actual maximum height which water will be lifted when the intake gauge reads 9 inches of mercury is _____ feet? - ANSWER-10.17 When calculating the time for a water shuttle operation, timing starts when? - ANSWER-The dump valve is opened on the tender Natural static water supply sources include? - ANSWER-Lakes and Streams One method of calculating the capacity of a water shuttle operation in gpm is to divide? - ANSWER-Tank size by the trip time When a centrifugal pump loses prime at draft, check for? - ANSWER-Loose intake connections, a clogged strainer, or an open pump drain When pumping from a hydrant, it is essential that the? - ANSWER-Hydrant is fully open A 5" diameter hose would be expected to flow approximately the same amount as? - ANSWER-Four 1/2" hoses In a large defensive operation, the main positioning factor is to? - ANSWER-Avoid parking in an area of high radiant heat, and avoid areas of possible flying embers The driver/operator must always make sure that the _____ are completely open when filling or dumping is taking place to prevent damage to the tank. - ANSWER-Vents Three primary methods can be used to operate a dump site. Which one of the following choices is not a method of operation? - ANSWER-Relay pumping In a shuttle operation, what is the available gpm for fire flow if; Tanker A 3000 tanker, trip time 12 minutes Tanker B 2500 tanker, trip time 10 minutes Tanker C 1000 tanker, trip time 10 minutes - ANSWER-203 gpm Once the power take off has been properly activated and the pump is engaged, the vehicle speedometer should show a speed of? - ANSWER-Slightly above 0 mph A fire hydrant with an orange bonnet cap will flow _____ gpm. - ANSWER-500 - 999 With a 1,000 gpm pumper, what is the pumping capacity of the pumper with 20' lift? - ANSWER-600 gpm When using 2 1/2 or 3 inch hoselines to supply the pumper directly off hydrant pressure, it is recommended that eh lines be no longer than? - ANSWER-300 feet _____ inches of vacuum is required to lift water 10 feet at sea level. - ANSWER-10 The minimum depth of water required to pull a draft is? - ANSWER-4 feet A sudden stoppage of water moving through a hose or pipe may result in? - ANSWER-Water Hammer Apparatus positioning could be determined by the? - ANSWER-Driver/Operator, incident commander, or the company officer If an apparatus and crew arrive on scene where no fire conditions are evident, or there is a nothing showing mode, it is advisable to position the apparatus? - ANSWER-Near the main entrance In a relay pump operation, any adjustment of pressure at the source pumper is made to maintain the minimum _____ pressure at the next pumper in line. - ANSWER-Intake In a relay pumping operation, which of the following should be positioned nearest the water source? - ANSWER-The largest capacity pumper The pressure that is created by the weight of air and varies depending on elevation is known as _____ pressure. - ANSWER-Atmospheric Two methods of relay pumping are the _____ relay method and the _____ relay method. - ANSWER-Maximum distance, constant pressure Relay operations should be shut down from the _____ first. - ANSWER-Fire Scene The residual pressure reading at the intake gauge of a pumper in a relay pumping operation should not fall below _____ psi. - ANSWER-20 The most efficient method for unloading a tender/tanker is to? - ANSWER-Dump the water into portable tanks using gravity, or dump the water into a portable tank using a jet assisted dump valve A 2,000 gallon tender makes the round trip between the dump site and fill in 12 minutes. The flow rating for that tender is _____ gpm. - ANSWER-150 A primary reason for eductor failure is? - ANSWER-Improper cleaning and maintenance of equipment When pumping to a standpipe system, a pump operator should always allow _____ friction loss for the standpipe system itself. - ANSWER-25 psi When supplying automatic sprinkler systems, pressure should be built up slowly to a minimum of _____ psi at the fire department connection. - ANSWER-150 Approximately _____psi should be added to the desired engine pressure for each floor above the standpipe connection that will have operating fire streams. - ANSWER-5 When using hose lines above ground, the usual pressure calculation is to add _____ psi for each story of the building below the fire floor. - ANSWER-5 When positioning a pumper to supply a fire department connection, the driver must consider the? - ANSWER-Positioning requirements of other apparatus When supplying a sprinkler connection, a minimum of _____ should be used. - ANSWER-One 3" line The purpose of the fire department check valve in a fire department connection is to? - ANSWER-Prevent water from a sprinkler system from flowing back into the fire department connection When supplying a sprinkler system, a good rule of thumb is to maintain a pump discharge pressure of _____ psi. - ANSWER-150 The angle from the front point of ground contact of the front tire to any projection of the apparatus in front of the axle is considered the? - ANSWER-Angle of approach _____ is defined as keeping apparatus in a state of usefulness or readiness. - ANSWER-Maintenance Checking and documenting the oil level, radiator coolant, fuel level, tires, and visible and audible warning signals is normally considered to be part of _____ maintenance. - ANSWER-Daily When performing a capacity test, the first desired pump pressure should be _____ psi. - ANSWER-150 Inspecting all valves would be considered a part of _____ maintenance. - ANSWER-Daily To select the proper lubricant, consideration must be given to the? - ANSWER-Manufacturer's recommendations To _____ means to restore or replace that which has become inoperable. - ANSWER-Repair Apparatus maintenance records serve many functions, such as? - ANSWER-Filing warranty claims with the manufacturer, and documenting recurrent repairs Before turning corners or approaching curves, the driver/operator should? - ANSWER-Shift a standard transmission into a lower gear The distance a vehicle travels from the time the driver begins to apply the brakes until it comes to a complete stop is known as? - ANSWER-Braking distance The most common cause of fire apparatus skidding is/are? - ANSWER-Driving too fast for road conditions, and weight shifts of heavy apparatus Apparatus are most likely to be involved in an accident at/on? - ANSWER-Intersections Most driving regulations pertain to environmental conditions that are? - ANSWER-Dry and clear A driver/operator of an emergency vehicle who does not obey state, local, or departmental driving regulations is? - ANSWER-Subject to criminal and civil prosecution Unless specifically exempt, when driving fire apparatus, the fire apparatus drivers/operators are generally subject to any/all? - ANSWER-Statutes, rules, regulations, and ordinances Safety bars on fire apparatus are designed to? - ANSWER-Keep firefighters from falling out of a jump seat You are responding to an emergency on a three-lane highway during moderately heavy traffic conditions. You are in the center lane. The vehicle ahead, which you are rapidly overtaking, stops. There is insufficient space to stop without striking the vehicle. Which of the following evasive tactics should be employed? - ANSWER-Brake to reduce speed as you pass on the left side of the stopped vehicle The weight carried on most fire apparatus can contribute to _____ due to excessive weight transfer. - ANSWER-Skidding, and Apparatus rollover If an apparatus begins to skid, the driver/operator should? - ANSWER-Turn the apparatus steering wheel so the front wheels face the direction of the skid The purpose of the alley dock skill is to simulate? - ANSWER-Backing a vehicle into a restricted area Because of the size of an apparatus, as well as the clearance needed when backing, the driver/operator should? - ANSWER-Assign a firefighter to clear the way and warn the driver/operator of any obstacle obscured by blind spots The purpose of the Serpentine course is to simulate? - ANSWER-Maneuvering around parked and stopped vehicles and tight corners While responding to an emergency where all lanes of traffic are blocked in the same direction as the responding apparatus, the apparatus driver should? - ANSWER-Move the apparatus into the opposing lane of traffic and proceed through the intersection at an extremely reduced rate of speed The purpose of the confined space turnaround is to simulate? - ANSWER-Reversing the direction of travel of a vehicle on a narrow street The confined space turnaround maneuver allows an operator to turn the apparatus _____ degrees. - ANSWER-180 Which of the following driving skills would not require using a spotter? - ANSWER-Diminishing clearance To effectively judge the ability of a vehicle to pass through areas of restricted horizontal and vertical openings, the operator must know? - ANSWER-Vehicle dimensions Studies have shown that an emergency vehicle going faster than _____ mph can possibly outrun its own warning devices. - ANSWER-50 At a speed of 60 mph, a siren is only audible up to _____ feet in front of the vehicle. - ANSWER-12 When more than one emergency vehicle is responding along the same route, units should travel at least _____ feet apart. - ANSWER-300 to 500 The purpose of an inverter on an apparatus is to transform? - ANSWER-DC current into AC current During a pump capacity test, a pumper should deliver _____ of its rated capacity at 250 psi pump pressure for 10 minutes. - ANSWER-50% Proper apparatus maintenance includes visually checking the tank water level? - ANSWER-Daily The changeover transfer valve on a two stage pump should be checked for proper operation? - ANSWER-Weekly In the fire service, each pump impeller in a housing is commonly called a? - ANSWER-Stage The following conditions which affect pumping ability is/are? - ANSWER-Ambient temperature, Barometric pressure, and Atmospheric pressure Apparatus equipped with water tanks of less than 500 gallons must provide a tank to pump flow rate of _____ gpm. Those with tanks larger than 500 gallons must provide _____ gpm. - ANSWER-250, 500 Dry hydrants should be opened completely because? - ANSWER-The drain valve is completely closed In a water distribution grid, the _____ supplies individual hydrants and blocks of consumers. - ANSWER-Distribuor _____ is/are caused by corrosion, rust, chemical constituents of the water, and growth of biological organisms. - ANSWER-Encrustation A _____ distribution system is a network of water mains. - ANSWER-Grid For businesses and industrial districts, water mains should be at least _____ inches. - ANSWER-8 The water level of a reservoir is 150 feet above a fire hydrant. What is the static reading at the hydrant? - ANSWER-65.1 psi The pressure remaining once water has begun flowing is know as _____ pressure. - ANSWER-Residual The part of the total pressure not used to overcome friction or gravity while forcing water through fire hose, pipe, fittings, and adapters is known as? - ANSWER-Residual pressure _____ pressure is the difference between the pump discharge pressure and the incoming pressure from the hydrant. - ANSWER-Net pump discharge Friction loss is usually expressed in terms of? - ANSWER-Pounds per square inch per 100 feet of hose In drafting operations, pumping ability decreases when? - ANSWER-Atmospheric pressure decreases What is the approximate friction loss in 400 feet of 2 1/2" hose flowing 300 gpm? (Coefficient = 2) - ANSWER-72 psi The formula (29.7)(d^2)(square root of NP) can be used to estimate the? - ANSWER-Flow of water in gallons per minute The recommended nozzle pressure for solid bore master streams two inches or less is _____ psi. - ANSWER-80 The recommended pressure for fog nozzle (all types) is _____psi. - ANSWER-100 What is the nozzle reaction from a 1 1/4" tip at 50 psi nozzle pressure? (NR = 1.57 X d^2 X NP) - ANSWER-123 lbs The pressure created by a column of water due to elevation is known as _____ pressure. - ANSWER-Head A _____ is used to find the flow pressure at a discharge opening. - ANSWER-Pitot tube and gauge Theoretically, the maximum distance a pump can lift water at sea level is _____ feet. - ANSWER-33.8 Using the condensed Q rule of thumb formula, the friction loss is 600 feet of 3 inch hose flowing 500 gpm is approximately? - ANSWER-150 psi The friction loss in 300 feet of 3" fire hose with 2 1/2" couplings flowing 500 gpm is approximately? (c = .8) - ANSWER-60 psi To calculate friction loss in 2 1/2" fire hose when the flow is near 100 gpm, which of the following formulas should be used? - ANSWER-FL = CQ^2L What is the desired pump pressure when supplying two lines of 2 1/2" hose, one 200 feet long and one 300 feet long, each with a 250 gpm nozzle operating at 100 psi? - ANSWER-138 psi The friction loss in 200 feet of 2 1/2" fire hose, with a flow of 90 gpm, is approximately? (C = 2) - ANSWER-3.24 psi The total friction loss in 500 feet of 3 inch fire hose with 300 gpm flowing is approximately? (C = .8) - ANSWER-36 psi In an auxiliary cooling system, heat is transferred from the engine cooling water to the? - ANSWER-Pump water The formula used to determine water flow from any solid stream nozzle when the nozzle pressure and tip diameter are known is? - ANSWER-29.7d^2 X square root of NP The transition from the water tank to an external water supply? - ANSWER-Must be made without disrupting the fire attack A _____ indicates flow in gallons per minute. - ANSWER-Flowmeter The driver/operator has set the apparatus up for the pumping operation. If the tachometer shows an rpm reading, but the speedometer does not, it could indicate that the? - ANSWER-Transmission is in the wrong gear, or the transmission is not engaged The device that can be used to determine pressure at the opening of a smooth bore opening is a? - ANSWER-Pitot tube The main purpose of a relief valve is to? - ANSWER-Relieve excessive pressure within the pump When pumping from a tank and attack lines are being used intermittently, what are some of the ways the pump operator can ensure that the pump does not overheat? - ANSWER-Set the circulator valve to tank position, crack open the tank fill valve, or discharge the booster reel into the tank The maximum height to which water can be drafted is near _____ feet, as opposed to the theoretical lift f 33.8 feet. - ANSWER-25 For drafting purposes, lift is measured from the _____ of the pump. - ANSWER-Surface of water to center One gallon of water weighs _____ pounds. - ANSWER-8.33 One primary way to increase the efficiency of water shuttle operations is to? - ANSWER-Decrease the time required to fill the tender In a working fire, which of the following apparatus has the highest priority for position? - ANSWER-Aerial apparatus Flowmeters can be used to assist the driver/operator in all of the following applications except? - ANSWER-Determining the percentage of foam concentration Using the hand method, determine the total pressure loss due to friction in 600 feet of 2 1/2 inch hose when a fog nozzle is flowing 150 gpm at 100 psi. - ANSWER-27 psi Using the condensed Q formula, determine the total pressure loss for each line: Line 1 is 600 feet of 3 inch hose flowing 400 gpm Line 2 is 800 feet of 3 inch hose flowing 300 gpm - ANSWER-Line 1 TPL = 96 psi Line 2 TPL = 72 psi Which of the following is now a consideration or factor in determining the usability of a static water source? - ANSWER-Water pressure Which of the following is an important consideration for a water shuttle operation? - ANSWER-The location of the dump site, the location of the fill site, and the route of travel for the tenders The dump site pumper should _____ on the end of the hard intake hose for the ability to remove the most water from a portable tank. - ANSWER-Use a low level strainer A dual pumping operation is? - ANSWER-Placing a second pumper at a hydrant and connecting both pumpers intake to intake Development of effective fire streams is dependent upon? - ANSWER-Friction, nozzle pressure, and elevation Quantity of water flowing, diameter of hose, and length of hose are all factors that influence? - ANSWER-Friction loss Pump discharge pressure (PDP) is equal to? - ANSWER-NP + TPL Using the coefficient method, determine the pressure loss due to friction in the hose assembly. -Two 1,000 feet lines 3" connected to a Siamese with 300 feet 2 1/2" with 1 1/4"tip at 50 psi - ANSWER-86.5 psi Using the hand method determine the pump discharge pressure required to supply the hose assembly: -Line 1 150 feet 2 1/2"hose with fog nozzle, 250 gpm at 100 psi -Line 2 400 feet 2 1/2" hose with fog nozzle, 250 gpm at 100 psi - ANSWER-150 psi When relay pumping, smallest capacity pumper should be? - ANSWER-Used at the fire scene When relay pumping, if the intake pressure drops below 20 psi? - ANSWER-There is danger of cavitation When pulling up to a hydrant, turning the front wheels to a 45 degree angle? - ANSWER-Will make it easier to adjust the apparatus if needed The formula for calculating the gpm flow rate for a tender is? - ANSWER-Tank size - 10% divided by trip time Fire fighting foam consists of approximately _____ percent water. - ANSWER-94 - 99.9 An example of a polar solvent is? - ANSWER-Acetone When using an in line eductor, the back pressure must not exceed _____ pressure. - ANSWER-65 - 70 percent on the inlet The process that causes foam concentrate to move through the device and into the water stream is called the _____ principle. - ANSWER-Venturi 1. There are two basic types of foam. 2. Foam solution is the completed product after air is introduced 3. Foam works by separating, cooling, or suppressing - ANSWER-Statements 1 and 3 are correct, 2 is incorrect The _____ is the most common type of portable foam proportioner. - ANSWER-In-line eductor The high cost of foam has prompted departments to use water instead of foam during testing. Because of the difference in _____ the rate of pickup is slightly different. - ANSWER-Viscosity Pump discharge pressures in excess of _____ psi may damage the standpipe system and result in breaks. - ANSWER-200 The pump discharge pressure needed to supply standpipes depends upon the? - ANSWER-Height of the fire floor, size and number of fire streams in operation, and friction loss in the standpipe A fire apparatus with a primary purpose of transporting 1,000 or more gallons of water is considered to be a/an? - ANSWER-Tanker/Tender The minimum qualifications for fire apparatus driver/operators are set by NFPA 1002, Standard for? - ANSWER-Fire Apparatus Driver/Operator Professional Qualifications Tandem rear axels, tri-axles, or a tractor-trailer design should be considered for? - ANSWER-1,500 gallons (6,000 L) The correct method of extinguishing fires from a wildland fire apparatus is to? - ANSWER-Use short sections of attack hose while walking alongside the apparatus and extinguishing fire along the way Keeping apparatus in a state of usefulness or readiness is known as? - ANSWER-Maintenance The manufacturer's manual will _________ the Society of Automotive Engineers' (SAE) number for the engine oil. - ANSWER-Recommend Which of the following conditions could be found while doing routine maintenance on a battery? - ANSWER-Both A and B are correct. Loose tie-downs Corrosion around the battery connections Batteries produce explosive ________ when being charged. - ANSWER-Hydrogen In an acceptance test, a fully loaded pumper must be able to accelerate to 35 mph in _______ seconds. - ANSWER-25 Which of the following is a result of over-throttling? - ANSWER-Additional fuel consumption and loss of power Improper tire pressures may cause? - ANSWER-Poor handling The apparatus inspection should begin by approaching and looking beneath the vehicle for spots that indicate? - ANSWER-Leaking vehicle fluids During a left and right rear side inspection, it is important to be sure that dual tires? - ANSWER-Do not come in contact with each other Steering wheel play should usually be no more than approximately ______ degrees in either direction. - ANSWER-10 The air pressure on apparatus equipped with air brakes should build to a sufficient level in order for the vehicle to operate within _______ seconds of starting. - ANSWER-60 To prevent water hammer, it is important to close nozzles, hydrants, valves, and hose clamps? - ANSWER-Slowly The device that introduces foam concentrate into the water stream to make the foam solution is? - ANSWER-Foam proportioner