Pumping Test: Trivia Quiz! MCQ
-
The purpose of using a spotter is to assist:
-
In stopping cross-traffic as the vehicle is pulled forward.
-
The driver by observing the area in the blind spot and warn the driver/operator of any obstacles around the apparatus.
-
The driver in lining up with a hydrant.
-
In determining best route to an incident.
-
In many communities, groundwater is extracted through electric water pumps, which use diesel to fuel their systems. For one to operate pumping equipment, they require knowledge of handling and maintenance. Take the test below and see if you have what it takes to handle the job. All the best!
(161).jpg "Pumping Test: Trivia Quiz! MCQ - Quiz")
Quiz Preview
- 2.
Development of effective fire stream is dependant upon:
-
Friction loss
-
Nozzle pressure
-
Elevation loss
-
All of the above
Correct Answer
A. All of the aboveExplanation
The development of an effective fire stream requires consideration of various factors. Friction loss refers to the pressure loss caused by the water flowing through hoses, fittings, and appliances. Nozzle pressure is the pressure at which water is discharged from the nozzle, which affects the reach and effectiveness of the stream. Elevation loss accounts for the decrease in pressure due to the vertical distance between the water source and the nozzle. Therefore, all of these factors, friction loss, nozzle pressure, and elevation loss, are crucial in determining the effectiveness of a fire stream.Rate this question:
-
- 3.
Checking for voltage, electrolyte level, and corrosion are all steps in inspecting:
-
Electronic components
-
The voltage regulator
-
Electrical motors
-
The battery
Correct Answer
A. The batteryExplanation
The given question asks about the steps involved in inspecting a certain component. The correct answer is "the battery." Checking for voltage is important to ensure that the battery has enough power. Inspecting the electrolyte level is necessary to verify if the battery has enough fluid to function properly. Lastly, checking for corrosion is important as it can affect the battery's performance. Therefore, all these steps are essential in inspecting the battery.Rate this question:
-
- 4.
A driver/operator of an emergency vehicle who does not obey state, local, or departmental driving regulations is:
-
protected under the Good Samaritan law.
-
subject to criminal prosecution only.
-
exempt from any prosecution.
-
subject to criminal and civil prosecution.
Correct Answer
A. subject to criminal and civil prosecution.Explanation
A driver/operator of an emergency vehicle who does not obey state, local, or departmental driving regulations is subject to criminal and civil prosecution. This means that they can face legal consequences for their actions, including both criminal charges and civil lawsuits. The Good Samaritan law does not provide protection in this scenario, as it typically applies to individuals who provide emergency assistance in good faith, rather than those who disregard driving regulations.Rate this question:
-
- 5.
A ___________ indicated flow in gallons per minute.
-
Compound gauge
-
Vacuum gauge
-
Flowmeter
-
Bourbon title
Correct Answer
A. FlowmeterExplanation
A flowmeter is a device that is used to measure the rate of flow of a liquid or gas in gallons per minute. It is specifically designed for this purpose and is calibrated to provide accurate readings. Unlike a compound gauge or vacuum gauge, which measure pressure or vacuum, a flowmeter is specifically designed to measure flow. Therefore, a flowmeter is the correct answer for indicating flow in gallons per minute. The option "bourbon title" is unrelated and does not provide any indication of flow.Rate this question:
-
- 6.
Quantity of water flowing diameter of hose and length of hose are all factors that influence.
-
Engine pressure
-
Friction loss
-
Critical velocity
-
Discharge pressure
Correct Answer
A. Friction lossExplanation
The correct answer is friction loss. Friction loss refers to the loss of pressure that occurs as water flows through a hose due to the friction between the water and the walls of the hose. The quantity of water flowing, diameter of the hose, and length of the hose all contribute to the amount of friction loss experienced. As these factors increase, the friction loss also increases, resulting in a decrease in the overall pressure of the water flowing through the hose.Rate this question:
-
- 7.
Which of the following conditions is NOT a factor in selecting the position of an apparatus on a working fire?
-
Department SOP
-
Method of attack
-
Exposures
-
Time of day
Correct Answer
A. Time of dayExplanation
The time of day is not a factor in selecting the position of an apparatus on a working fire. The position of an apparatus is determined by various factors such as the department's standard operating procedures (SOP), the method of attack, and the potential exposures. These factors help ensure an effective response and control of the fire situation. However, the time of day does not impact the selection of the apparatus position as it is not relevant to the tactical decisions made during firefighting operations.Rate this question:
-
- 8.
The manufacturer's manual will ___________ the Society of Automotive Engineers (S.A.E.) number for engine oil.
-
Not suggest
-
recommend
-
require
-
not mandate
Correct Answer
A. recommendExplanation
The manufacturer's manual will recommend the Society of Automotive Engineers (S.A.E.) number for engine oil. This means that the manual will provide a suggestion or advice regarding the appropriate S.A.E. number to use for the engine oil. It does not mandate or require a specific S.A.E. number, but rather provides a recommendation for optimal performance.Rate this question:
-
- 9.
Apparatus are most likely to be involved in an accident at/on:
-
off/on ramps.
-
intersections.
-
Freeways.
-
bridges.
Correct Answer
A. intersections.Explanation
Apparatus, such as vehicles or equipment, are most likely to be involved in an accident at intersections. Intersections are areas where multiple roads meet, and they often have high traffic volumes and complex traffic patterns. This increases the chances of collisions between vehicles, especially if drivers fail to follow traffic rules or are not attentive. Accidents at intersections can result in serious injuries or damage due to the higher speeds involved. Therefore, intersections are considered high-risk areas for accidents involving apparatus.Rate this question:
-
- 10.
When relay pumping if the intake pressure drops below 20 PSI.
-
The throttle must be increased
-
There is danger of a cavitation
-
The relay valve is set too low
-
High pump discharge pressure is needed
Correct Answer
A. There is danger of a cavitationExplanation
When relay pumping, if the intake pressure drops below 20 PSI, there is a danger of cavitation. Cavitation occurs when the pressure of a liquid drops below its vapor pressure, causing the formation of vapor bubbles. These bubbles collapse when they enter a higher pressure region, causing shock waves that can damage the pump and other equipment. Therefore, it is important to be cautious and take preventive measures when the intake pressure drops below the specified level to avoid cavitation.Rate this question:
-
- 11.
A fire apparatus with a primary purpose of transporting 1,000 or more gallons of water is considered to be a/an.
-
attack pumper
-
aerial device
-
midi pumper
-
Tanker/tender
Correct Answer
A. Tanker/tenderExplanation
A fire apparatus with a primary purpose of transporting 1,000 or more gallons of water is considered to be a tanker/tender. This type of vehicle is specifically designed to carry large amounts of water to a fire scene, where it can be used to extinguish the fire. Tanker/tenders are commonly used in areas where there is limited access to a water supply, such as rural or remote locations. They play a crucial role in firefighting operations by providing a supplemental water source to other fire apparatus on the scene.Rate this question:
-
- 12.
Before an apparatus response from the station, the driver/operator should:
-
Tell passengers to buckle their seat belts, then proceed.
-
Assume everyone is buckled in and proceed.
-
check all fluid levels.
-
assure that everyone is seated and belted.
Correct Answer
A. assure that everyone is seated and belted.Explanation
Before an apparatus response from the station, the driver/operator should assure that everyone is seated and belted. This is important for the safety of the passengers as well as the driver/operator. Ensuring that everyone is seated and belted reduces the risk of injury in case of sudden stops or accidents during the response. It is the responsibility of the driver/operator to make sure that all passengers are properly secured before proceeding with the response.Rate this question:
-
- 13.
The recommended pressure for fog nozzle (all types) is ___________ PSI.
-
50
-
80
-
100
-
150
Correct Answer
A. 100Explanation
The recommended pressure for a fog nozzle, regardless of its type, is 100 PSI. This pressure ensures that the nozzle produces a fine mist or fog-like spray pattern, which is ideal for various applications such as firefighting, dust control, and cooling. Operating the nozzle at this pressure ensures optimal performance and efficient use of water or other fluids.Rate this question:
-
- 14.
When pumping from a hydrant it is essential that the
-
Strainer be clean
-
Hydrant be fully open
-
Compound gauge always read 20 lbs negative pressure
-
Tank fill valve fully open
Correct Answer
A. Hydrant be fully openExplanation
When pumping from a hydrant, it is essential that the hydrant be fully open. This is because a fully open hydrant allows for maximum water flow and pressure, ensuring that the pump can effectively draw water from the hydrant. If the hydrant is not fully open, it may restrict the flow of water and result in inadequate pressure, which can affect the performance of the pump and the effectiveness of firefighting operations.Rate this question:
-
- 15.
You have responded to an emergency on a limited-access highway. Your apparatus is not being used. Which of the following should be done?
-
Position the apparatus across the intersection to block traffic.
-
Use the apparatus as a barrier between the traffic flow, and the responders on scene.
-
. Position the apparatus off the highway in an area away from the incident.
-
Position the apparatus as close to the incident as possible so responders will have access to the apparatus.
Correct Answer
A. Use the apparatus as a barrier between the traffic flow, and the responders on scene.Explanation
Positioning the apparatus as a barrier between the traffic flow and the responders on scene is the correct answer because it helps to ensure the safety of the responders. By using the apparatus as a barrier, it creates a physical separation between the traffic and the incident, reducing the risk of accidents or injuries to the responders. This allows them to focus on their emergency response without the added danger of being close to the traffic flow.Rate this question:
-
- 16.
Unless specifically exempt, when driving fire apparatus, the fire apparatus driver/operators are generally subject to any/all:
-
NFPA 1901 guidelines
-
Statutes, rules, regulations. and ordinances.
-
National Emergency Vehicle Response Commission Guidelines
-
Department of Motor Vehicle registration rules.
Correct Answer
A. Statutes, rules, regulations. and ordinances.Explanation
When driving fire apparatus, the fire apparatus driver/operators are generally subject to statutes, rules, regulations, and ordinances. This means that they must adhere to the laws and regulations set forth by the government and local authorities regarding the operation of fire apparatus. This ensures safety and compliance with the legal requirements while driving the vehicle.Rate this question:
-
- 17.
Friction Loss is usually expressed in terms of:
-
Pounds per square inch per 50 feet of hose
-
Pounds per square inch per 100 feet of hose
-
Gallons per minute per 50 feet of hose
-
Gallons per minute per 100 feet of hose
Correct Answer
A. Pounds per square inch per 100 feet of hoseExplanation
Friction loss refers to the pressure drop that occurs as water flows through a hose. It is usually expressed in terms of pounds per square inch (PSI) per 100 feet of hose. This measurement allows firefighters and other professionals to calculate the amount of pressure loss over a specific length of hose. By knowing the friction loss, they can ensure that an adequate amount of pressure is maintained at the nozzle to effectively combat fires or perform other tasks.Rate this question:
-
- 18.
Due to the size of an apparatus, as well as the clearance needed when backing, the driver/operator should:
-
back up very slowly, assuring that everyone hears the back-up alarm.
-
assign a firefighter to clear the way and warn the driver/operator of any obstacle obscured by blind spots.
-
place traffic cones around the area where the backing up will occur.
-
turn on all emergency lights, check all mirrors, then proceed to back up in a slow, safe manner.
Correct Answer
A. assign a firefighter to clear the way and warn the driver/operator of any obstacle obscured by blind spots. -
- 19.
An Auxiliary Cooling Device:
-
Causes Pump Water to mix with radiator fluid
-
Can cause over pressurization of the radiator
-
Gets its water from the intake side of the pump
-
Cools engine water when the apparatus pump is engaged
Correct Answer
A. Cools engine water when the apparatus pump is engagedExplanation
An auxiliary cooling device is a system that helps in cooling the engine water when the apparatus pump is engaged. It does this by causing pump water to mix with radiator fluid. However, it is important to note that this device can also cause over pressurization of the radiator. Additionally, it gets its water from the intake side of the pump.Rate this question:
-
- 20.
Approximately __________ PSI should be added to the desired engine pressure for each floor above the standpipe connection that will have operating fire streams.
-
25
-
15
-
5
-
10
Correct Answer
A. 5Explanation
For each floor above the standpipe connection that will have operating fire streams, approximately 5 PSI should be added to the desired engine pressure. This is because as water is pumped up to higher floors, there is an increase in friction loss due to the longer distance and the elevation. By adding 5 PSI, it compensates for this friction loss and ensures that an adequate amount of water reaches the upper floors for firefighting purposes.Rate this question:
-
- 21.
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:
-
braking distance.
-
Total reaction distance
-
visual lead distance.
-
brake performance distance.
Correct Answer
A. braking distance.Explanation
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 braking distance. This term refers to the distance covered by the vehicle while the brakes are being applied and the vehicle is decelerating. It is an important factor in determining the overall stopping distance of a vehicle and is influenced by various factors such as speed, road conditions, and the condition of the brakes.Rate this question:
-
- 22.
The _________ is the major component of the centrifugal Pump because it provides velocity to the water.
-
Housing
-
Volute
-
Vane
-
Impeller
Correct Answer
A. ImpellerExplanation
The impeller is the major component of the centrifugal pump because it is responsible for providing velocity to the water. It is a rotating component with curved blades that accelerates the fluid, creating a centrifugal force that pushes the water towards the pump outlet. The impeller's design and speed determine the pump's performance and flow rate.Rate this question:
-
- 23.
The recommended nozzle pressure for 2 1/2 hand lines with solid bore tips is __________ PSI.
-
50
-
80
-
100
-
150
Correct Answer
A. 50Explanation
The recommended nozzle pressure for 2 1/2 hand lines with solid bore tips is 50 PSI. This low pressure is suitable for the solid bore tips to effectively disperse water and create a strong stream. Higher pressures may cause the stream to break up or become less effective in controlling fires. Therefore, a pressure of 50 PSI is recommended to ensure optimal performance of the hand lines with solid bore tips.Rate this question:
-
- 24.
Excessive engine temperatures during pumping operations can be controlled by using the:
-
Tank to fill valve
-
Auxiliary cooler
-
Radiator cooler
-
Immersion bypass
Correct Answer
A. Auxiliary coolerExplanation
Excessive engine temperatures during pumping operations can be controlled by using the auxiliary cooler. The auxiliary cooler is an additional cooling system that helps to regulate the temperature of the engine. It works by dissipating heat from the engine coolant, preventing it from reaching dangerous levels. By utilizing the auxiliary cooler, the engine can maintain a safe operating temperature, ensuring optimal performance and preventing damage caused by overheating.Rate this question:
-
- 25.
The pressure that is created by the weight of air, and varies depending on elevation is known as ______________ pressure.
-
Absolute
-
Atmospheric
-
Barometric
-
Head
Correct Answer
A. AtmosphericExplanation
Atmospheric pressure is the correct answer because it refers to the pressure created by the weight of the air in the atmosphere. This pressure varies with elevation, with higher elevations experiencing lower atmospheric pressure. Absolute pressure refers to the total pressure at a given point, including atmospheric pressure. Barometric pressure is another term for atmospheric pressure. Head pressure refers to the pressure exerted by a fluid column, and is not specifically related to the weight of air.Rate this question:
-
- 26.
Keeping apparatus in a state of usefulness or readiness is known as:
-
Repair
-
maintenance
-
Reliability
-
Trouble shooting
Correct Answer
A. maintenanceExplanation
Maintenance refers to the act of keeping an apparatus in a state of usefulness or readiness. It involves regular inspections, repairs, and replacements to ensure that the equipment functions properly and efficiently. Maintenance is essential to prevent breakdowns, extend the lifespan of the apparatus, and minimize downtime. It includes tasks such as cleaning, lubricating, calibrating, and adjusting the equipment. By performing regular maintenance, potential issues can be identified and addressed before they escalate into major problems, ensuring the apparatus remains reliable and operational.Rate this question:
-
- 27.
What is the friction loss in 400 feet of 3" hose with 2 1/2 couplings flowing 400 GPM?
-
130 PSI
-
51 PSI
-
13 PSI
-
512 PSI
Correct Answer
A. 51 PSIExplanation
The friction loss in a hose is determined by the diameter of the hose, the length of the hose, and the flow rate. In this case, we are given that the hose is 3" in diameter and 400 feet long, with 2 1/2" couplings. The flow rate is given as 400 GPM. Using a friction loss calculator or formula, we can determine that the friction loss in this scenario is 51 PSI.Rate this question:
-
- 28.
What is the friction loss in 300 feet of 2 1/2 rubber lines hose flowing 350 GPM?
-
21 PSI
-
24 PSI
-
36 PSI
-
74 PSI
Correct Answer
A. 74 PSIExplanation
The friction loss in a fire hose is determined by the length and diameter of the hose, as well as the flow rate. In this case, we are given that the hose is 300 feet long and has a diameter of 2 1/2 inches. The flow rate is 350 gallons per minute (GPM). Using the formula for friction loss in fire hoses, we can calculate the pressure loss. The friction loss is directly proportional to the length of the hose and the square of the flow rate, and inversely proportional to the diameter of the hose. Plugging in the given values, we find that the friction loss is 74 PSI.Rate this question:
-
- 29.
The vacuum test requires a reading at the end of 5 minutes during which no more than ____________________ inches of vacuum should be lost.
-
24
-
22
-
10
-
12
Correct Answer
A. 10Explanation
The vacuum test requires a reading at the end of 5 minutes during which no more than 10 inches of vacuum should be lost. This means that the vacuum should remain relatively stable during the 5-minute period, with minimal loss of vacuum pressure. A higher loss of vacuum pressure would indicate a leak or issue with the system being tested.Rate this question:
-
- 30.
The ____ enables the apparatus to be driven and discharge water on the fire at the same time.
-
Power take off
-
Inverter
-
Power transfer
-
Transverter
Correct Answer
A. Power take offExplanation
The power take off enables the apparatus to be driven and discharge water on the fire at the same time. It is a device that transfers power from the engine of the apparatus to another mechanical device, such as a water pump, allowing it to operate while the vehicle is in motion. This ensures that the apparatus can quickly respond to a fire emergency and simultaneously provide the necessary water supply to extinguish the fire.Rate this question:
-
- 31.
The recommended nozzle pressure for solid bore master streams two inches or less is __________ PSI.
-
50
-
80
-
100
-
150
Correct Answer
A. 80Explanation
The recommended nozzle pressure for solid bore master streams two inches or less is 80 PSI. This pressure is sufficient to provide an effective and controlled stream of water for firefighting purposes. Higher pressures may cause excessive water damage and lower pressures may result in an ineffective stream. Therefore, 80 PSI strikes a balance between these factors, making it the recommended pressure for solid bore master streams.Rate this question:
-
- 32.
The weight carried on most fire apparatus can contribute to____________due to excessive weight transfer.
-
skidding
-
apparatus rollover
-
delay in the driver's brake reaction time
-
Both A and B are correct
Correct Answer
A. Both A and B are correctExplanation
The weight carried on most fire apparatus can contribute to skidding and apparatus rollover due to excessive weight transfer.Rate this question:
-
- 33.
The purpose of the alley dock skill is to simulate:
-
backing a vehicle into a restricted area
-
maneuvering around parked and stopped vehicles and tight corners.
-
steering a vehicle in a straight line.
-
turning a vehicle around in a confined space.
Correct Answer
A. backing a vehicle into a restricted areaExplanation
The alley dock skill is designed to simulate the process of backing a vehicle into a restricted area. This skill helps drivers practice maneuvering their vehicles in tight spaces, such as when parking in narrow alleys or loading docks. By mastering this skill, drivers can improve their ability to navigate challenging situations where precision and control are necessary.Rate this question:
-
- 34.
When a pumper is supplying four lines of 2 1/2 house each equipped with a 250gpm fog nozzle at 100 psi and each 300 feet long, the pump discharge pressure required is most nearly:
-
244 PSI
-
138 PSI
-
158 PSI
-
190 PSI
Correct Answer
A. 138 PSIExplanation
When calculating the pump discharge pressure, we need to consider the friction loss in the hose lines. The friction loss can be calculated using the formula: friction loss = (CQ²L) / D⁵, where C is the friction loss coefficient, Q is the flow rate, L is the length of the hose, and D is the diameter of the hose. Since all the hose lines are the same length and diameter, the friction loss will be the same for each line. Therefore, we can calculate the total friction loss by multiplying the friction loss for one line by the number of lines. Given that the flow rate is 250 gpm and the length is 300 feet, we can calculate the friction loss for one line and then multiply it by 4. After calculating the total friction loss, we can add it to the desired nozzle pressure (100 psi) to find the pump discharge pressure. The answer of 138 PSI is the closest option to the calculated pump discharge pressure.Rate this question:
-
- 35.
When pumping from the draft, which of the following conditions affect(s) a pump's ability?
-
Water temperature
-
Barometric Pressure
-
Air Temperature
-
All of the above
Correct Answer
A. All of the aboveExplanation
The water temperature, barometric pressure, and air temperature all affect a pump's ability when pumping from the draft. The temperature of the water can impact the pump's performance and efficiency. Barometric pressure affects the suction capability of the pump, as it determines the pressure difference between the pump and the water source. Air temperature can also affect the pump's ability, as extreme temperatures can cause the pump to overheat or freeze. Therefore, all of these conditions have an impact on a pump's ability when pumping from the draft.Rate this question:
-
- 36.
Flowmeters can be used to assist the driver/operator in all of the following applications except
-
Diagnosing water flow problems
-
Determining the percentage of foam concentrate
-
Relay pumping
-
Standpipe operations
Correct Answer
A. Determining the percentage of foam concentrateExplanation
Flowmeters can be used in various applications to measure the flow of liquids or gases. They are commonly used to diagnose water flow problems, relay pumping, and assist in standpipe operations. However, determining the percentage of foam concentrate is not a typical application for flowmeters. Other methods, such as using foam proportioners or specific testing equipment, are usually employed for this purpose. Therefore, flowmeters are not used to determine the percentage of foam concentrate.Rate this question:
-
- 37.
In a relay pumping operation which of the following should be positioned nearest the water source?
-
The largest capacity pumper
-
The smallest capacity pumper
-
The pumper with the largest water tank
-
The pumper with the largest discharge hose
Correct Answer
A. The largest capacity pumperExplanation
In a relay pumping operation, it is important to position the largest capacity pumper nearest the water source. This is because the largest capacity pumper can draw and deliver a greater amount of water, ensuring a steady and sufficient water supply for the operation. By placing it closest to the water source, it minimizes the distance and potential loss of pressure in the water flow, allowing for more efficient and effective firefighting efforts.Rate this question:
-
- 38.
The friction loss in 300 feet of 3" fire hose with 2 1/2 couplings flowing 500 GPM is approximately:
-
60 PSI
-
50 PSI
-
150 PSI
-
20 PSI
Correct Answer
A. 60 PSIExplanation
The friction loss in a fire hose is the pressure drop that occurs as water flows through the hose due to the resistance of the hose material. In this case, the length of the hose is 300 feet and it has 2 1/2 inch couplings. The flow rate is 500 gallons per minute (GPM). Based on these factors, the friction loss is approximately 60 PSI.Rate this question:
-
- 39.
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.
-
Discharge
-
Static
-
Intake
-
Flow
Correct Answer
A. IntakeExplanation
In a relay pump operation, the adjustment of pressure at the source pumper is made to maintain the minimum intake pressure at the next pumper in line. This means that the pressure is adjusted to ensure that the next pumper receives an adequate supply of water from the source pumper. The intake pressure is crucial in maintaining a continuous flow of water and ensuring efficient operation of the relay pump system.Rate this question:
-
- 40.
The flow from a 1-inch nozzle tip with a nozzle pressure of 50 PSI is approximately ____________ GPM.
-
190
-
210
-
220
-
230
Correct Answer
A. 210Explanation
The flow rate from a nozzle can be determined using the formula Q = K * √P, where Q is the flow rate in GPM, K is a constant, and P is the nozzle pressure in PSI. Since the question states that the nozzle pressure is 50 PSI, we can substitute this value into the formula. Assuming the constant K is the same for all options, the only answer choice that results in a flow rate close to 210 GPM is the correct answer.Rate this question:
-
- 41.
Which of the following types of fire pumps must be primed using an external priming device?
-
Rotary vane
-
Piston
-
Centrifugal
-
Rotary Gear Pump
Correct Answer
A. CentrifugalExplanation
Centrifugal fire pumps must be primed using an external priming device. Unlike other types of fire pumps, centrifugal pumps rely on the creation of a vacuum in the pump casing to draw in water. This vacuum can only be created if the pump is initially primed with water. Therefore, an external priming device is necessary to ensure that the pump is properly primed before it can effectively operate and supply water for firefighting purposes.Rate this question:
-
- 42.
What engine pump pressure is necessary to deliver 200 GPM through 200 feet of 2 1/2 hose to a fog nozzle at ground level?
-
108 PSI
-
116 PSI
-
122 PSI
-
135 PSI
Correct Answer
A. 116 PSIExplanation
To deliver water at a flow rate of 200 gallons per minute (GPM) through 200 feet of 2 1/2 inch hose to a fog nozzle at ground level, a pump pressure of 116 PSI is necessary. This pressure is required to overcome the frictional losses in the hose and maintain the desired flow rate.Rate this question:
-
- 43.
The total friction loss in 500 feet of 3" hose with 2 1/2 couplings with 300 gpm flowing is approximately
-
4 PSI
-
36 PSI
-
63 PSI
-
105 PSI
Correct Answer
A. 36 PSIExplanation
The friction loss in a fire hose is determined by the length of the hose, the diameter of the hose, and the flow rate of the water. In this case, we have a 500-foot long hose with 2 1/2 inch couplings and a flow rate of 300 gallons per minute (gpm). Using the friction loss formula, we can calculate the approximate friction loss. The friction loss for a 3" hose with 300 gpm flow rate is typically around 36 PSI. Therefore, the correct answer is 36 PSI.Rate this question:
-
- 44.
National Status Water Supply Sources Include:
-
Lakes
-
Cisterns
-
Swimming pools
-
Private water tanks
Correct Answer
A. LakesExplanation
National water supply sources include lakes as they are large bodies of water that can provide a significant amount of water for various purposes such as drinking, irrigation, and industrial use. Lakes are often used as a natural reservoir and can be a reliable and sustainable source of water supply for a country.Rate this question:
-
- 45.
When a centrifugal pump loses prime at a draft check for
-
Tight intake connection
-
A clogged strainer
-
A tightly closed pump drain
-
Increased engine speed
Correct Answer
A. A clogged strainerExplanation
If a centrifugal pump loses prime, one possible reason could be a clogged strainer. A clogged strainer can restrict the flow of the liquid, preventing it from entering the pump properly and causing it to lose prime. Therefore, checking for a clogged strainer is necessary to ensure the smooth operation of the pump.Rate this question:
-
- 46.
Using the condensed Q Method as a rule of thumb the friction loss in 500 feet of 3 " fire hose flowing 300 gom is:
-
12 PSI
-
55 PSI
-
50 PSI
-
45 PSI
Correct Answer
A. 45 PSIExplanation
The Q Method is a simplified method used to estimate friction loss in fire hoses. According to this method, the friction loss can be calculated by multiplying the total length of the hose (in hundreds of feet) by the square of the flow rate (in gallons per minute) and then dividing the result by 100. In this case, the total length of the hose is 500 feet and the flow rate is 300 gpm. Therefore, the friction loss would be (500/100) * (300^2/100) = 45 PSI.Rate this question:
-
- 47.
You should switch from pressure to volume mode when:
-
A large discharge outlet is being used
-
Less than half of the rated capacity of the pump will be required
-
A higher than normal pressure will be required
-
More than half of the rated capacity of the pump will be needed
Correct Answer
A. More than half of the rated capacity of the pump will be neededExplanation
When more than half of the rated capacity of the pump will be needed, it is advisable to switch from pressure to volume mode. This is because volume mode allows the pump to deliver a higher flow rate, which is necessary to meet the increased demand. By switching to volume mode, the pump can operate more efficiently and effectively in delivering the required amount of fluid.Rate this question:
-
- 48.
The recommended method of determining he exact friction loss of any appliance is to
-
Check NFPA 1091
-
Run tests with each appliance used by the department
-
Review manufacturers specifications
-
Check nfpa 1901
Correct Answer
A. Run tests with each appliance used by the departmentExplanation
The recommended method of determining the exact friction loss of any appliance is to run tests with each appliance used by the department. This is because different appliances may have different friction loss characteristics, and running tests with each specific appliance will provide the most accurate and reliable information. Checking NFPA 1091 and NFPA 1901 may provide general guidelines and standards, but they may not account for the specific characteristics of each appliance. Reviewing manufacturers' specifications can also be helpful, but actual tests with the appliances in use will provide the most precise information.Rate this question:
-
- 49.
When pumping to a standpipe connection on the 10th floor how much friction loss should be added for elevation?
-
50 PSI
-
45 PSI
-
40 PSI
-
35 PSI
Correct Answer
A. 45 PSIExplanation
When pumping water to a standpipe connection on a higher floor, there is an increase in elevation that needs to be considered. This elevation results in additional pressure that needs to be overcome by the pump. In this case, the correct answer of 45 PSI suggests that there should be a friction loss of 45 pounds per square inch due to the elevation of the 10th floor.Rate this question:
-
Quiz Review Timeline (Updated): Mar 20, 2023 +
Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
-
Current Version
-
Mar 20, 2023Quiz Edited by
ProProfs Editorial Team -
Oct 18, 2015Quiz Created by
Gotgauze
Back to top