Commercial Food Equipment Service Association (CFESA) Steam Practice Test

These questions are part of the practice quiz. Start practicing

• How does a mechanical float assembly in steam equipment typically function?
• What is suggested to prevent corrosion in the water jacket?
• Which metal is more likely to withstand corrosion in a mixed fitting scenario?
• During boiler maintenance, why is blow down an important process?
• What happens when the long probes in a liquid level control short to ground?
• What does a pH level below 7 indicate?
• What is condensate in the context of steam?
• What is the purpose of a steam separator?
• If steel and brass pipe fittings are mixed, which will corrode away?
• What is the recommended way to check the water level in a kettle with a sight glass?
• What causes oil canning in pressure steamers?
• At what temperature does water boil in degrees Fahrenheit?
• What is the primary cause of most steam pressure reducing valve failures?
• What happens to the steam in a self-contained kettle after it heats the product?
• What does the term "dry fired" refer to?
• What distinguishes static pressure from running pressure in a steamer system?
• How are pressure gauges for pressure steamers different from standard gauges?
• What is the effect of using distilled water in the kettle?
• What is the function of the thermostatic element in a float and thermostatic steam trap?
• What is critical to maintain when operating a steam appliance?
• What is responsible for creating the vacuum that helps pull steam out of the cooking compartment in a convection steamer?
• Which type of stainless steel will corrode away first, active or passive?
• How much more acidic is a pH of 2 compared to a pH of 3?
• Can a valve ever be installed between the relief valve and the boiler?
• What is the primary reason for replacing steam generators?
• What action should be taken if the cooking compartment in a pressure steamer experiences oil canning?
• What is the primary role of the steam trap in a steam system?
• What must be done if a kettle's air vent is determined to be faulty?
• What are the two primary functions of a steam trap?
• What can occur if a steam kettle lacks a proper steam trap?
• When assessing water pressure to a steamer, what type of pressure should be checked?
• What happens if a solenoid coil is energized when it is not mounted on the valve plunger housing?
• What is one of the key roles of a pressure reducing valve?
• What should technicians frequently check to prevent overheating issues in electric elements?
• Why is it important that steam traps are properly maintained?
• The drain line of a convection steamer must be piped to what type of drain?
• What should be done if there is a steam leak in a self-contained kettle?
• What is a major limitation of a single probe electro-mechanical liquid level control?
• What is the primary cause of steam leaking out of the door on a convection steamer?
• If you want to maintain 12 PSI in the boiler, to what pressure will you have to adjust the operating pressure switch to open?
• What distinguishes a thermostatic steam trap from a thermostatic vent?
• What occurs to the gauge pressure in a kettle as it cools?
• What is the purpose of adding baking soda or soda ash when deliming boilers?
• What does the term oil canning mean when related to pressure steamers?
• What is the purpose of the float valve in a float and thermostatic trap?
• What does the boiler code state about the capacity of a relief valve used on a boiler?
• How should a steam trap be installed on a kettle?
• Why is chlorine removal from water important in food equipment service?
• The pole where corrosion residue builds up is known as what?
• How do nickel plated boilers help prevent corrosion?
• Which of the following describes how latent heat of vaporization is measured?
• What would be a common sign of a malfunctioning steam trap?
• What is the purpose of the thermostatic trap connected to the cooling chamber on a pressure steamer?
• What happens if the orifice of an inverted bucket trap becomes clogged?
• Which pole is referred to as the one that corrodes away in galvanic corrosion?
• What type of issue does a shorted circuit in the level control typically lead to?
• What is a primary consequence of mixing different types of metal fittings?
• What is the main function of an air vent in a steam system?
• What is the consequence of not properly maintaining a steam trap?
• What effect does air have on the heating capacity of a steam kettle?
• What issue can arise from a dirty or loose ground connection in liquid level control?
• What is latent heat?
• How can air in a steam system act as an insulator?
• When is a compound gauge necessary in boilers or steamers?
• What is the consequence of insufficient steam space due to overfilling?
• Why do most solenoid valves fail?
• Why is distilled water recommended to prevent scale build-up in steam kettles?
• What is the main purpose of a charcoal filter?
• What is the main purpose of the welding inspection in boiler manufacturing?
• What is the function of a condensate leg in steam equipment?
• Which of the following is NOT one of the four inspections performed on a boiler as it is manufactured?
• What is the most common setting for the high pressure control on commercial steamers?
• What factor primarily determines the selection of a type of steam trap?
• What should be done as a preventative measure when servicing a Cleveland steamer with a mechanical float assembly?
• Why does steam cook food more quickly than other methods?
• If an air vent is continually venting steam, what does this signify?
• What is a compound gauge used for?
• How important is the spray pattern of the condensate water spray nozzle?
• What is the most likely cause of a steamer overfilling after a new solenoid valve installation?
• What is the consequence of reducing the size of a drum line from the connection at the steamer?
• What causes water hammer in a steam line?
• What is the consequence of not removing floats during the deliming process?
• What is the hardness level that classifies water as hard?
• What can occur if a valve is misidentified in a steam system?
• Which of the following describes a characteristic of a sediment filter?
• What is the impact of scale buildup in a boiler system?
• How does a phosphate feeder function in a boiler system?
• In a self-contained kettle, what happens to steam when it encounters cooler surfaces?
• What might happen if the condensate does not cool in a steam trap installation?
• What damage can occur to an immersion element if it is not immersed in water?
• What is the purpose of installing a pressure gauge in a steam system?
• At what temperature does food color begin to change during cooking?
• In a solid state level control with two probes, what function does the second probe serve?
• Under what conditions can stainless steel become active?
• What distinguishes a steam boiler from a steam generator?
• What does BTU stand for?
• Which part of the manufacturing process involves inspecting the steel before shipping?
• Why is it critical to avoid dirt in a steam pressure reducing valve?
• What effect does scale buildup have on steam generators?
• What is the role of the anode in galvanic corrosion?
• What should be done if the kettle is operating under pressure but not cooking effectively?
• What does hydrostatic testing evaluate in a boiler?
• What happens to the cooking compartment when pressure increases by only 1 or 2 psi?
• What is the main difference between a pressure gauge and a compound gauge?
• How does adding a second probe improve the single probe electro-mechanical liquid level control?
• How does an inverted bucket trap remove air from the system?
• Why is it important to maintain proper water levels in a kettle?
• What is the main advantage of a pressure steamer?
• In what ways are inverted bucket traps superior to float and thermostatic traps?
• What is the reason a steam kettle requires proper drainage?
• When is it permissible to pipe a convection steamer drain into a trap?
• To what pressure should the high pressure control be adjusted?
• If the data plate on a steamer does not provide the correct water pressure, what is the standard rule of thumb to follow?
• Any outlet piping from the relief valve must be what size?
• What is the main purpose of a steam trap on a direct steam kettle?
• What is the operation principle of an ion exchange water softener?
• What type of steam trap is generally utilized for kettles?
• Which factor is crucial for ensuring good water quality in a boiler?
• What are the two corrosion poles identified in galvanic corrosion?
• What is the difference in wattage for a steamer rated for 208/240V when used at 208 volts?
• In the context of pressure steamers, what does “banging” usually indicate?
• In the context of steam systems, what does 'deliming' refer to?
• What is the desirable pH range for boiler water?
• What type of water is recommended for use in a self-contained kettle?
• How much boiler horsepower is necessary to power a 40-gallon kettle?
• What happens to pressure when steam condenses in a closed vessel?
• Why are Reed switches considered effective for use as float switches?
• What principle do liquid level controls operate on in terms of electric current flow?
• What type of test is the hydrostatic pressure test?
• What is inspected after a boiler shell is tack welded?
• What does the term "active stainless steel" indicate?
• What is printed on the boiler plate that aids in inspections?
• What does a pressure gauge reading a vacuum indicate for a kettle when it is cold?
• When must a steam trap be used with a steam kettle?
• Which pressure is always higher, static or running pressure?
• What is one potential issue with using a float steam trap in a system?
• When might a self-contained kettle require additional water?
• What is the maximum allowable length for the drain line from a convection steamer?
• What type of water supply is generally required for a convection steamer?
• What should you be extra careful about when deliming steamer boilers with electric elements?
• What is the function of the small orifice hole in the top of an inverted bucket?
• On what three characteristics are foods typically judged?
• What are the two most common causes of pressure control failures?
• What is the purpose of a vent tube in a pilot reservoir system for pressure vessels?
• What does the pH index measure?
• What effect does more frequent blow down have on scale buildup?
• What is the primary function of a sediment filter?
• If a shutoff valve is installed in the line to a pressure gauge, what type of valve must it be?
• What effect does cooking vegetables in a pressure steamer have on them?
• What causes boilers to corrode around the top?
• Why is it essential to change charcoal filters regularly?
• What occurs if the short probes in a liquid level control short to ground?
• What basic principle does a pilot reservoir system operate on?
• How often should a boiler be opened for inspection?
• If a kettle is up to pressure but not cooking, what is a likely issue?
• In electric liquid level controls, which parameter is critical for ensuring proper function?
• How many BTUs are required to raise one pound of water by 10°F?
• What is the primary function of a liquid level control system?
• What is one benefit of using steam in food equipment?
• What is the required steam rate of flow for two 10-gallon kettles and one 40-gallon kettle?
• What is the maximum steam pressure that most pressure steamers can handle?
• What is the primary function of a low water cutoff on a boiler?
• What is a potential sign of air in a steam kettle during cooking?
• What is the value of the latent heat of vaporization for water?
• What effect does a poor spray pattern of the condensate water have?
• What type of chemicals should generally be avoided in deliming if lead components are present?
• What is the typical state of steam produced by a steam generator?
• What is the boiling point of water at 15 psi?
• How does the pounds per hour rating of a relief valve relate to the BTU of the boiler?
• What happens when no minerals are present in the water for electric current conduction?
• Which of the following has a neutral pH of 7?
• Which component can cause a liquid level control to malfunction if it becomes dirty?
• What is one common way air enters the steam jacket of a kettle?
• Should the cooking compartment of a convection steamer ever be under any pressure?
• What is the function of a siphon tube when using pressure gauges on steam?
• Can a non-functional air vent prevent a boiler from heating?
• What is a common issue to check for when troubleshooting solenoid valve problems?
• All relief valves must be installed how, in relation to the boiler water level?
• How can air be removed from a self-contained kettle?
• Which component of a convection steamer is primarily tasked with removing air?
• Does a convection steamer typically have a pressure relief valve?
• What is the normal setting of a pressure relief valve on a large compartment steamer?
• What typically happens to vegetables when cooked under pressure?
• Do solenoids usually fail for no reason?
• The inlet pressure must be at least how much greater than the nameplate gas pressure?
• Which of the following is a potential cause for an electric steamer to not heat properly?
• What is a key outcome of using phosphates in boiler systems?
• What is included in the design of a convection steamer to prevent excessive steam from entering the drain line?
• What causes the breakdown in food texture when cooked in a pressure steamer?
• What should the typical pressure setting for steamers generally not exceed?
• What maintenance is crucial for preserving the functionality of a steam trap?
• What level of maintenance is typically required for reverse osmosis systems?
• What process uses water pressure to test the integrity of a boiler?
• What occurs if the corrosion resistor completely corrodes away?
• How often should boilers perform blow down?
• How are vacuums typically created in a boiler or pressure vessel?
• What is the consequence of a heavily scaled bank affecting its internal surfaces?
• At what pressure is the boiling point of water 239 degrees F?
• What is a significant disadvantage of reverse osmosis systems?
• What is considered a neutral pH level?
• How can oil canning problems be resolved?
• What precaution should be taken when deliming boilers or steamers that use floats?
• In regards to solenoid valves, what is a sign of corrosion or scale buildup?
• What occurs if the water jacket of a kettle is overfilled?
• What is the smallest allowable pipe inlet size for a steam boiler pressure relief valve?
• What effect does de-ionized water have on a liquid level control system?
• How much steam is produced when one cubic foot of water is boiled off?
• When is a float and thermostatic trap most beneficial?
• If a tank only fills once and doesn't refill until the power is reset, where is the issue likely located?
• How does a self-contained kettle generate steam?
• What does latent heat of vaporization refer to?
• What is the process of boiler blow down?
• What is the primary function of a siphon tube in pressure control systems?