3e451 Volume 4 Contingency Operations
Volume 4 contingency operations unlike what initially comes to mind are a test on different aspects of water. These include its movement, purification et cetera. Take up the quiz below and not only test but also advance your knowledge.
Questions and Answers
- 1.
(601) Which reverse osmosis water purification units are specifically designed for the U.S. Air Force?
- A.
WPES-10 and H-9518-1
- B.
WPES-20 and H-9518-2
- C.
WPES-30 and H-9518-3
- D.
WPES-40 and H-9518-4
Correct Answer
B. WPES-20 and H-9518-2Explanation
WPES-20 and H-9518-2 are specifically designed for the U.S. Air Force.Rate this question:
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- 2.
(601) Which color band designates reverse osmosis water purification piping that carries filtered water?
- A.
Yellow
- B.
Black
- C.
Green
- D.
Blue
Correct Answer
A. YellowExplanation
Yellow color band designates reverse osmosis water purification piping that carries filtered water.Rate this question:
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- 3.
(601) Which color band designates reverse osmosis water purification piping that carries product water?
- A.
Yellow
- B.
Black
- C.
Green
- D.
Blue
Correct Answer
D. BlueExplanation
Blue color band designates reverse osmosis water purification piping that carries product water. This color coding system is used to easily identify the type of fluids or substances being transported in pipes. In this case, blue is specifically used for product water in reverse osmosis systems. It helps prevent cross-contamination and ensures that the water being transported is safe for consumption.Rate this question:
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- 4.
(601) How many gallons per hour does the H-9518-2 reverse osmosis water purification unit produce (on average)?
- A.
600
- B.
650
- C.
1200
- D.
1250
Correct Answer
A. 600Explanation
The H-9518-2 reverse osmosis water purification unit produces an average of 600 gallons per hour.Rate this question:
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- 5.
(602) What is the capacity of the reverse osmosis water purification raw water pump
- A.
30 gpm
- B.
60 gpm
- C.
90 gpm
- D.
120 gpm
Correct Answer
A. 30 gpmExplanation
The capacity of the reverse osmosis water purification raw water pump is 30 gpm. This means that the pump is capable of pumping 30 gallons of water per minute.Rate this question:
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- 6.
(603) The movement of water through a permeable membrane from an area of lesser concentration to an area of higher concentration is called
- A.
Osmosis
- B.
Reverse osmosis
- C.
Reverse filtration
- D.
Inverse pressure
Correct Answer
A. OsmosisExplanation
Osmosis is the correct answer because it refers to the movement of water through a permeable membrane from an area of lesser concentration to an area of higher concentration. This process occurs in order to equalize the concentration on both sides of the membrane. Reverse osmosis, reverse filtration, and inverse pressure do not accurately describe this specific movement of water.Rate this question:
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- 7.
(603) What percentage of organic material in water is removed by the reverse osmosis water purification unit?
- A.
50
- B.
75
- C.
90
- D.
99
Correct Answer
D. 99Explanation
Reverse osmosis water purification units are highly effective in removing impurities from water, including organic material. The given correct answer of 99% implies that the reverse osmosis unit removes almost all of the organic material present in the water, leaving it significantly purified. This high percentage indicates the efficiency and reliability of reverse osmosis as a water purification method.Rate this question:
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- 8.
(603) Unless directed otherwise by medical authorities, how many parts per million of chlorine residual must you keep in the product water produced by the reverse osmosis water purification unit?
- A.
1
- B.
2
- C.
3
- D.
4
Correct Answer
B. 2Explanation
In order to ensure the safety and quality of the product water produced by the reverse osmosis water purification unit, it is necessary to maintain a certain level of chlorine residual. Unless specified otherwise by medical authorities, the correct answer is to keep 2 parts per million of chlorine residual in the product water. This level of chlorine residual helps to disinfect the water and prevent the growth of harmful bacteria or microorganisms.Rate this question:
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- 9.
(603) Which chemical is used as a coagulant aid during the reverse osmosis water purification unit treatment process?
- A.
Polymer
- B.
Chlorine
- C.
Citric acid
- D.
Sodium hex
Correct Answer
A. PolymerExplanation
Polymer is used as a coagulant aid during the reverse osmosis water purification unit treatment process. Coagulant aids are substances that help in the formation of larger particles, making it easier to remove impurities during the purification process. Polymers have high molecular weights and can bind to smaller particles, creating larger flocs that can be easily separated from the water. This aids in the removal of suspended solids and other contaminants, improving the efficiency of the reverse osmosis water purification process.Rate this question:
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- 10.
(603) Sodium hex is fed by the reverse osmosis water purification unit chemical feed pump at the
- A.
Multimedia filter pump
- B.
Multimedia filter influent
- C.
Reverse osmosis element pump
- D.
Reverse osmosis element influent
Correct Answer
B. Multimedia filter influentExplanation
The correct answer is Multimedia filter influent. Sodium hex is fed by the reverse osmosis water purification unit chemical feed pump at the multimedia filter influent. This means that the sodium hex is being introduced into the water at the point where it enters the multimedia filter. The multimedia filter is an important part of the water purification process, as it helps to remove suspended solids and other impurities from the water before it goes through the reverse osmosis element.Rate this question:
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- 11.
(603) The optimum pH of water going through the reverse osmosis elements in the reverse osmosis water purification unit is?
- A.
Between 9 and 12
- B.
Between 5 and 8
- C.
Between 1 and 4
- D.
Preferably alkaline
Correct Answer
B. Between 5 and 8Explanation
The optimum pH of water going through the reverse osmosis elements in the reverse osmosis water purification unit is between 5 and 8. This is because reverse osmosis membranes are most effective in removing contaminants at a pH range of 5 to 8. Water with a pH below 5 or above 8 can potentially damage the membranes and reduce their efficiency. Therefore, maintaining the pH within this range ensures optimal performance and longevity of the reverse osmosis system.Rate this question:
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- 12.
(604) What type of valve is used to backwash the multimedia filter on the reverse osmosis water purification unit?
- A.
Gate
- B.
Globe
- C.
Butterfly
- D.
Multiport
Correct Answer
D. MultiportExplanation
A multiport valve is used to backwash the multimedia filter on a reverse osmosis water purification unit. This type of valve has multiple ports or openings that allow for different flow directions and functions. In the case of backwashing the multimedia filter, the multiport valve is used to reverse the flow of water through the filter, flushing out any accumulated debris or contaminants. This helps to maintain the efficiency and effectiveness of the filter in removing impurities from the water.Rate this question:
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- 13.
(604) The multimedia filter pressure gauge on the reverse osmosis water purification unit indicates
- A.
Suction pressure
- B.
Negative pressure
- C.
Differential pressure
- D.
Product water pressure
Correct Answer
C. Differential pressureExplanation
The correct answer is differential pressure. The multimedia filter pressure gauge on the reverse osmosis water purification unit is used to measure the difference in pressure between the inlet and outlet of the multimedia filter. This difference in pressure, known as the differential pressure, indicates the level of filtration occurring within the filter. By monitoring the differential pressure, operators can determine when the filter needs to be cleaned or replaced to maintain optimal filtration efficiency.Rate this question:
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- 14.
(604) What tests are taken utilizing the color comparator?
- A.
Total dissolved solids
- B.
Nitrates
- C.
Phosphates
- D.
Chlorine and pH
Correct Answer
D. Chlorine and pHExplanation
The color comparator is used to test the levels of chlorine and pH in a substance. It is a tool that compares the color of a sample with a set of color standards to determine the concentration of chlorine or the pH level. This is important in various applications such as water treatment, swimming pool maintenance, and testing the quality of drinking water.Rate this question:
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- 15.
(605) In which order do the high pressure safety devices on the WPES-20 reverse osmosis water purification unit activate?
- A.
High-pressure relief valve, high-pressure switch, rupture disc assembly
- B.
High-pressure switch, high-pressure relief valve, rupture disc assembly
- C.
High-pressure relief valve, rupture disc assembly, high-pressure switch
- D.
Low-pressure switch, high-pressure switch, rupture disc assembly, high-pressure relief valve
Correct Answer
A. High-pressure relief valve, high-pressure switch, rupture disc assembly -
- 16.
(606) Technically speaking, what physical impact does the choice of a clear water source have on the reverse osmosis water purification unit (ROWPU)?
- A.
Lower working pressure is exerted on the RO elements
- B.
Water source will be relatively free of pollutants
- C.
Less frequent backwashings will be realized
- D.
Less wear and tear on the RO pump
Correct Answer
C. Less frequent backwashings will be realizedExplanation
Choosing a clear water source for the reverse osmosis water purification unit (ROWPU) will result in less frequent backwashings. This is because clear water sources are relatively free of pollutants, which means there is less buildup and clogging in the system. As a result, the unit will require fewer backwashings to clean and maintain its efficiency.Rate this question:
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- 17.
(606) How far away from the campsite should you set up the reverse osmosis water purification unit?
- A.
100 feet upstream
- B.
200 yards upstream
- C.
300 feet downstream
- D.
400 yards downstream
Correct Answer
A. 100 feet upstreamExplanation
Setting up the reverse osmosis water purification unit 100 feet upstream from the campsite ensures that the purified water is not contaminated by any potential pollutants or contaminants that may be present downstream. This distance allows for a sufficient buffer zone to prevent any potential contamination and ensures that the purified water is safe for consumption.Rate this question:
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- 18.
(607) Where are the two deionization cartridges packed in the H-9518-2 model reverse osmosis water purification unit?
- A.
First layer
- B.
Second layer
- C.
Third layer
- D.
Fourth layer
Correct Answer
B. Second layerExplanation
The two deionization cartridges are packed in the second layer of the H-9518-2 model reverse osmosis water purification unit.Rate this question:
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- 19.
(607) What is the maximum total dissolved solids (TDS) the factory calibrated in line TDS monitor can read?
- A.
1,000
- B.
2,000
- C.
3,000
- D.
4,000
Correct Answer
C. 3,000Explanation
The factory calibrated in line TDS monitor can read a maximum total dissolved solids (TDS) of 3,000.Rate this question:
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- 20.
(607) What initial action drives the ocean intake wellpoint into the ocean floor?
- A.
Pressure exerted down on the wellpoint
- B.
Water pressure from the pump
- C.
Suction action of pump
- D.
Wellpoint driving tool
Correct Answer
A. Pressure exerted down on the wellpointExplanation
The correct answer is "Pressure exerted down on the wellpoint." When the pressure is exerted downward on the wellpoint, it helps to drive the wellpoint into the ocean floor. This pressure helps to create a secure connection between the wellpoint and the ocean floor, ensuring that it is firmly in place.Rate this question:
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- 21.
(608) Which technical order do you use when operating the H-9518-2 reverse osmosis water purification unit?
- A.
40W4-13-4
- B.
39W9-13-4
- C.
38W8-13-4
- D.
37W7-13-4
Correct Answer
A. 40W4-13-4Explanation
The correct answer is 40W4-13-4.Rate this question:
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- 22.
(608) During initial setup of the reverse osmosis water purification unit (ROWPU), all chemical feed valves must be set to
- A.
Off
- B.
Feed
- C.
Prime
- D.
Standby
Correct Answer
C. PrimeExplanation
During the initial setup of the reverse osmosis water purification unit (ROWPU), all chemical feed valves must be set to "Prime." This means that the valves are opened to allow the chemicals to flow through the system and fill the necessary chambers or tanks. This is done to ensure that the system is properly primed and ready for operation. The other options, "Off," "Feed," and "Standby," do not accurately describe the necessary action during the initial setup of the ROWPU.Rate this question:
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- 23.
(608) What is the initial setting of all the chemical pump control knobs on the reverse osmosis water purification unit?
- A.
0
- B.
2
- C.
6
- D.
10
Correct Answer
D. 10Explanation
The initial setting of all the chemical pump control knobs on the reverse osmosis water purification unit is 10.Rate this question:
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- 24.
(609) What is the maximum reverse osmosis pump pressure that should never be exceeded when operating the reverse osmosis water purification unit?
- A.
980 psi (seawater), 500 psi (brakish water)
- B.
500 psi (seawater), 980 psi (brakish water)
- C.
960 psi (seawater), 500 psi (brakish water)
- D.
500 psi (seawater), 960 psi (brakish water)
Correct Answer
C. 960 psi (seawater), 500 psi (brakish water)Explanation
The maximum reverse osmosis pump pressure that should never be exceeded when operating the reverse osmosis water purification unit is 960 psi for seawater and 500 psi for brackish water. This means that if the pressure goes beyond these limits, it can cause damage to the system or compromise the quality of the purified water. It is important to operate the unit within these pressure limits to ensure its proper functioning and maintain the desired water quality.Rate this question:
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- 25.
(610) What component of the reverse osmosis water purification unit controls the backwash procedure?
- A.
Element cleaning switch
- B.
Backwash strainer
- C.
Backwash pump
- D.
Backwash timer
Correct Answer
D. Backwash timerExplanation
The backwash timer is the component of the reverse osmosis water purification unit that controls the backwash procedure. This timer is responsible for initiating and regulating the backwash process, which helps to clean and remove any accumulated debris or contaminants from the system. By controlling the timing of the backwash procedure, the timer ensures that the reverse osmosis unit operates efficiently and maintains its effectiveness in purifying water.Rate this question:
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- 26.
(611) What is the purpose of feeding citric acid into the reverse osmosis water purification unit (ROWPU) during the production run
- A.
Increase the pH of raw water
- B.
Increase the pH of product water
- C.
Reduce scale buildup on the RO elements
- D.
Reduce scale buildup on the cartridge filter elements
Correct Answer
C. Reduce scale buildup on the RO elementsExplanation
Feeding citric acid into the reverse osmosis water purification unit (ROWPU) during the production run helps reduce scale buildup on the RO elements. Scale buildup can occur due to the presence of minerals and impurities in the water, which can hinder the efficiency and performance of the RO system. Citric acid acts as a chelating agent, helping to dissolve and remove these mineral deposits, thus preventing scale buildup and maintaining the effectiveness of the RO elements. This ensures that the purified water produced by the ROWPU is of high quality and free from any potential contaminants.Rate this question:
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- 27.
(611) At what point do you set the critic acid chemical feed valve back to the prime position?
- A.
When the pH reads between 2-3
- B.
When the pH reads between 3-4
- C.
When the pH reads between 5-8
- D.
When the pH reads between 9-12
Correct Answer
C. When the pH reads between 5-8Explanation
When the pH reads between 5-8, the critic acid chemical feed valve is set back to the prime position. This suggests that the critic acid chemical feed valve should be adjusted when the pH level of the solution is within the range of 5 to 8. This range indicates that the solution is neither too acidic nor too alkaline, and adjusting the valve at this point helps maintain the desired pH balance.Rate this question:
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- 28.
(612) Which reverse osmosis water purification unit pump is used to recirculate the citric acid solution during the reverse osmosis element cleaning process?
- A.
Distribution
- B.
Backwash
- C.
Raw water
- D.
Reverse osmosis
Correct Answer
B. BackwashExplanation
The correct answer is Backwash. During the reverse osmosis element cleaning process, the backwash pump is used to recirculate the citric acid solution. This pump helps to remove any accumulated deposits or scaling on the reverse osmosis elements, ensuring their proper functioning and increasing the efficiency of the water purification unit.Rate this question:
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- 29.
(612) Once initiated, when do you stop the reverse osmosis water purification unit reverse osmosis element cleaning procedure?
- A.
After 45 minutes has expired
- B.
After 15 minutes has expired
- C.
When the pH of the product tank is below 3.5
- D.
When the pH of the product tank is above 3.5
Correct Answer
A. After 45 minutes has expiredExplanation
The reverse osmosis water purification unit reverse osmosis element cleaning procedure is stopped after 45 minutes has expired.Rate this question:
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- 30.
(613) Cartridge filter replacement is indicated on the reverse osmosis water purification unit when the
- A.
Influent pressure of the multimedia filter exceeds 20 psi
- B.
Influent pressure of the cartridge filter exceeds 15 psi
- C.
Differential pressure of the multimedia filter exceeds 20 psi
- D.
Differential pressure of the cartridge filter exceeds 15 psi
Correct Answer
C. Differential pressure of the multimedia filter exceeds 20 psiExplanation
When the differential pressure of the multimedia filter exceeds 20 psi, it indicates the need for cartridge filter replacement on the reverse osmosis water purification unit. This means that there is a significant pressure difference between the influent and effluent sides of the multimedia filter, suggesting that the cartridge filter is becoming clogged or dirty and needs to be replaced. This is important for maintaining the efficiency and effectiveness of the water purification process.Rate this question:
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- 31.
(613) What should you do just before you loosen the eyebolts of the reverse osmosis water purification unit cartridge filter cover?
- A.
Backwash the filter
- B.
Start-up the ROWPU
- C.
Fill the filter with water
- D.
Mark the position of the cover
Correct Answer
D. Mark the position of the coverExplanation
Before loosening the eyebolts of the reverse osmosis water purification unit cartridge filter cover, you should mark the position of the cover. This is important because it ensures that the cover is properly aligned and can be easily reinstalled after maintenance or cleaning. By marking the position, you can easily realign the cover and avoid any potential leaks or damage to the filter.Rate this question:
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- 32.
(614) You must replace the reverse osmosis water purification unit reverse osmosis elements when
- A.
Citric acid feeding and both element cleaning methods are not effective
- B.
Elements have been backwashed 3 times
- C.
Element end connectors are damaged
- D.
Element interconnectors are damaged
Correct Answer
A. Citric acid feeding and both element cleaning methods are not effectiveExplanation
When citric acid feeding and both element cleaning methods are not effective, it indicates that the reverse osmosis elements are not being properly cleaned and maintained. This can lead to a decrease in the efficiency and effectiveness of the water purification unit. Therefore, it is necessary to replace the reverse osmosis elements to ensure the proper functioning of the unit and maintain the quality of the purified water. The other options mentioned, such as backwashing the elements or repairing damaged connectors, do not address the issue of ineffective cleaning methods and therefore are not the correct answer.Rate this question:
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- 33.
(614) What occurs when the end connectors or the interconnectors of the reverse osmosis water purification unit get damaged by high pressure?
- A.
Osmosis
- B.
Reverse osmosis
- C.
Filtration
- D.
Reverse filtration
Correct Answer
B. Reverse osmosisExplanation
When the end connectors or interconnectors of a reverse osmosis water purification unit get damaged by high pressure, it can lead to a phenomenon known as reverse osmosis. Reverse osmosis is the process in which water molecules flow from a region of higher solute concentration to a region of lower solute concentration, opposite to the natural osmosis process. In this case, the damaged connectors cause an increase in pressure, causing water to flow in the opposite direction than intended, resulting in reverse osmosis.Rate this question:
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- 34.
(615) What is the best way to protect hardwall piping from solar radiation
- A.
Bury piping
- B.
Paint piping
- C.
Keep water constantly moving
- D.
Cover pipe with camouflage material
Correct Answer
A. Bury pipingExplanation
Burying piping is the best way to protect it from solar radiation. By burying the piping underground, it is shielded from direct exposure to sunlight, reducing the risk of damage or degradation caused by solar radiation. This method provides a physical barrier between the piping and the sun, effectively minimizing the effects of solar radiation on the pipe's integrity and lifespan.Rate this question:
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- 35.
(615) Under normal conditions, what are the proper parts per million and hours needed for chlorine to disinfect the Basic Airfields Expeditionary Resources water distribution system?
- A.
20, 12
- B.
20, 24
- C.
10, 12
- D.
10, 24
Correct Answer
D. 10, 24Explanation
Chlorine is commonly used as a disinfectant in water distribution systems. In this question, the proper parts per million (ppm) of chlorine needed for disinfection is 10. This means that there should be 10 parts of chlorine for every million parts of water in the system. Additionally, it is stated that 24 hours are needed for chlorine to effectively disinfect the water distribution system.Rate this question:
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- 36.
(615) The chlorine residual of a Basic Expeditionary Airfield Resources water distribution system should never be lower than
- A.
1 Part per million at the point of use
- B.
5 Parts per million at the point of use
- C.
1 Part per million at the point of injection
- D.
5 Parts per million at the point of injection
Correct Answer
A. 1 Part per million at the point of useExplanation
The correct answer is 1 Part per million at the point of use. This means that the chlorine residual in a Basic Expeditionary Airfield Resources water distribution system should never be lower than 1 part per million when it reaches the point of use, such as when it is consumed by individuals. This ensures that the water is adequately treated and safe for consumption, as chlorine is commonly used as a disinfectant to kill harmful bacteria and pathogens in water.Rate this question:
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- 37.
(616) How many reverse osmosis water purification units (ROWPU) make up the 1500 gph ROWPU water production subsystem?
- A.
1
- B.
2
- C.
3
- D.
4
Correct Answer
B. 2Explanation
The 1500 gph ROWPU water production subsystem consists of 2 reverse osmosis water purification units (ROWPU).Rate this question:
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- 38.
(616) The 550 follow-on subsystem is functionally identical to what other distribution subsystem?
- A.
550 Initial subsystem
- B.
Source run subsystem
- C.
550 Follow-on subsystem
- D.
Industrial operations and flightline subsystem
Correct Answer
A. 550 Initial subsystemExplanation
The 550 follow-on subsystem is functionally identical to the 550 initial subsystem.Rate this question:
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- 39.
(616) What is provided with the industial operations and flightline extension subsystem to protect the water distribution system piping from damage?
- A.
Couplings
- B.
Piping sleeves
- C.
Warning markers
- D.
Hose rollover protection ramps
Correct Answer
D. Hose rollover protection rampsExplanation
The industial operations and flightline extension subsystem provides hose rollover protection ramps to protect the water distribution system piping from damage. These ramps are designed to prevent hoses from being crushed or damaged when vehicles or equipment drive over them. By providing a raised surface for the hoses to pass over, the ramps ensure that the piping remains intact and undamaged, reducing the risk of leaks or breaks in the water distribution system.Rate this question:
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- 40.
(617) What components make up the Basic Expeditionary Airfield Resources package macerator pump lift stations?
- A.
Submersible centrifugal pump, pump lift out assembly, and three floats
- B.
Two submersible centrifugal pump, pump lift out assembly, and four floats
- C.
Submersible macerator pump, pump lift out assembly, and three floats
- D.
Two submersible macerator pumps, pump lift out assembly, and four floats
Correct Answer
C. Submersible macerator pump, pump lift out assembly, and three floatsExplanation
The Basic Expeditionary Airfield Resources package macerator pump lift stations consist of a submersible macerator pump, a pump lift out assembly, and three floats.Rate this question:
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- 41.
(617) After experiencing unusually long pump runs, how do you inspect the dual pump stations accumulator to determine if it has become waterlogged?
- A.
Depress air valve
- B.
Centrifugal pump control
- C.
Pressure drop in the system
- D.
Pressure increase in the system
Correct Answer
A. Depress air valveExplanation
To determine if the dual pump stations accumulator has become waterlogged after long pump runs, you need to depress the air valve. By doing so, you can release any excess air that may have accumulated in the system. If water comes out instead of air, it indicates that the accumulator has become waterlogged. This can cause issues with the pump's performance and may require further inspection or maintenance.Rate this question:
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- 42.
(617) If the pressure switch on the 35 gpm electric pump is not operating properly, what is the first step you should take to correct the problem after de-energizing the unit?
- A.
Clean the contacts
- B.
Replace the contacts
- C.
Replace the pressure switch
- D.
Tap on the pressure switch housing
Correct Answer
A. Clean the contactsExplanation
If the pressure switch on the 35 gpm electric pump is not operating properly, the first step to take to correct the problem after de-energizing the unit is to clean the contacts. This is because dirty or corroded contacts can prevent proper electrical connection and cause the switch to malfunction. By cleaning the contacts, any dirt or corrosion can be removed, allowing for better electrical conductivity and potentially resolving the issue with the pressure switch.Rate this question:
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- 43.
(617) When a float is not working properly in the dual pump lift station, and you have cleaned it and observed that it is not getting hung up in the lift station itself, what is your next course of action?
- A.
Replace the float
- B.
Have an electrician check the float
- C.
Check the voltage to the lift station
- D.
Shake the float to knock the contacts loose
Correct Answer
B. Have an electrician check the floatExplanation
If the float is not working properly even after cleaning and ensuring that it is not getting stuck in the lift station, the next course of action would be to have an electrician check the float. This is because there may be an issue with the electrical components of the float that is causing it to malfunction. The electrician will be able to diagnose and fix any electrical problems that may be affecting the float's performance.Rate this question:
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- 44.
(617) What is likely the problem if a lift station pump is running backwards?
- A.
Voltage too low
- B.
Voltage too high
- C.
Phase voltage is incorrect
- D.
Impeller is installed backwards
Correct Answer
C. Phase voltage is incorrectExplanation
If a lift station pump is running backwards, it is likely because the phase voltage is incorrect. Phase voltage refers to the voltage supplied to each phase of a three-phase electrical system. If the phase voltage is incorrect, it can cause the pump to run in the opposite direction. This issue can be resolved by ensuring that the correct phase voltage is supplied to the pump.Rate this question:
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- 45.
(618) How many washers and dryers are provided with the self-help laundry?
- A.
Three washers and three double-stacked dryers
- B.
Four washers and four double-stacked dryers
- C.
Five washers and five double-stacked dryers
- D.
Six washers and six double-stacked dryers
Correct Answer
C. Five washers and five double-stacked dryersExplanation
The self-help laundry provides five washers and five double-stacked dryers.Rate this question:
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- 46.
(618) How do you ensure that all the air has been released from the self-help laundry's heater?
- A.
Crack the union
- B.
Check the effluent
- C.
Operate a washing machine
- D.
Open the water heater relief valve until water appears
Correct Answer
D. Open the water heater relief valve until water appearsExplanation
To ensure that all the air has been released from the self-help laundry's heater, you should open the water heater relief valve until water appears. This is because when air is trapped in the heater, it can reduce its efficiency and potentially cause damage. By opening the relief valve, any trapped air will be released and replaced by water, allowing the heater to function properly.Rate this question:
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- 47.
(617) What technical order action do you followto correct the self-helps laundrys water heater if the water is too hot?
- A.
Adjust the thermostat
- B.
Contact HVAC personnel
- C.
Partially close the gate valve
- D.
Test and service the mixing valve
Correct Answer
D. Test and service the mixing valveExplanation
To correct the self-help laundry's water heater if the water is too hot, the appropriate technical order action is to test and service the mixing valve. The mixing valve is responsible for regulating the temperature of the water, so by testing and servicing it, any issues or malfunctions can be identified and resolved. This will ensure that the water temperature is adjusted to the desired level, providing a comfortable and safe environment for the users. Adjusting the thermostat, contacting HVAC personnel, or partially closing the gate valve are not the correct actions for addressing this specific issue.Rate this question:
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- 48.
(619) What effect does grease have on the electric kitchens evaporation beds?
- A.
Attracts beneficial bacteria
- B.
Slows the evaporation process
- C.
Enhances the bacteriological process
- D.
Grease does not effect the evaporation process
Correct Answer
B. Slows the evaporation processExplanation
Grease slows down the evaporation process in electric kitchens' evaporation beds. This is because grease forms a layer on the surface of the liquid, creating a barrier that inhibits the evaporation of water. As a result, the evaporation process is hindered and takes longer to occur.Rate this question:
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- 49.
(620) How much sand is required when a 20,000 gallon water bladder is placed on rocky or uneven surfaces?
- A.
2 inches
- B.
3 inches
- C.
4 inches
- D.
5 inches
Correct Answer
A. 2 inchesExplanation
When a water bladder is placed on rocky or uneven surfaces, it is important to provide a layer of sand underneath to create a stable and level base. The question asks for the amount of sand required, and the correct answer is 2 inches. This means that a layer of 2 inches of sand should be placed under the water bladder to ensure proper stability and support on rocky or uneven surfaces.Rate this question:
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- 50.
(620) What is the maximum allowable height you can fill a 20,000 gallon water bladder
- A.
34 inches
- B.
44 inches
- C.
54 inches
- D.
64 inches
Correct Answer
D. 64 inchesExplanation
The maximum allowable height you can fill a 20,000 gallon water bladder is 64 inches. This means that the bladder can hold the maximum amount of water when filled to a height of 64 inches.Rate this question:
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Current Version
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Mar 20, 2023Quiz Edited by
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Nov 18, 2013Quiz Created by
Pggomoljak328
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