4th Year Plumbing TQ Practice Test

These questions are part of the practice quiz. Start practicing

• What is the crust strength of DWV cast iron soil pipe?
• What is the first step when commissioning a gas-fired appliance?
• What equipment is commonly used to lower a pump into a well?
• Which of the following is NOT a type of optical protection light?
• Which of the following methods is used to determine the capacity of a sewage holding tank?
• What must be installed downstream of an interceptor?
• What is the minimum allowable diameter for a floor drain?
• What is the ultimate allowed CO2 percentage in a plumbing system?
• What is the maximum distance a trap can be from a fixture?
• What is the purpose of a water heater's anode rod?
• What is the purpose of a hose bib vacuum breaker?
• During the regeneration process, what follows after the backwash step?
• What is the most likely issue if the HSI (Hot Surface Ignitor) does not energize?
• What is the first step in the regeneration process of a water softener?
• Which gas appliance is considered to be 100% efficient?
• A pressure vacuum breaker must be installed how high above the flood level rim?
• What is the purpose of having two vents at differing heights in an oil interceptor?
• What is the required distance between a septic tank and a water source?
• What is the required separation distance from a septic tank to a municipal water source?
• What is the minimum distance from the septic field to a water source?
• Which sanitation temperature is considered adequate for commercial dishwashing?
• What can be a consequence of placing indirect connections in prohibited areas?
• Which pipe material is typically used for hot water distribution?
• What is the role of a cleanout in a plumbing system?
• What type of joint is commonly used for connecting copper pipes?
• What does closing the motor pulley on a blower motor primarily affect?
• What is the function of a vent stack in plumbing?
• What component in a system needs to be evaluated for capacity before adding new cooling components?
• What is the acceptable level of oxygen in flue gases from gas appliances?
• Which type of sewage tank can be buried at the shallowest depth?
• What is a key difference between ABS and PVC pipes?
• What type of transformer is utilized when the H terminals are connected to a load?
• What is the standard pressure for a residential water supply system?
• What does a high level of nitrate in a water supply typically indicate?
• What is the formula to size an interceptor?
• What is the primary purpose of a backflow preventer?
• In plumbing, what is the purpose of a backflow preventer?
• How long should an atmospheric vacuum breaker not be subjected to use?
• Where must drinking fountains be located at a swimming pool?
• In the context of drainage systems, what does the term "slope" refer to?
• Which of the following gases is primarily used in make-up air systems?
• How many showers are required in a washroom at a swimming pool?
• What does it indicate if water is coming out of the atmospheric port of a reduced pressure zone (RP)?
• What is a common cause of water heater failure?
• How far should the soil-based treatment component of a wastewater treatment system be from a nearby lake, river, or creek?
• How do you determine the correct size of a drain pipe?
• When is a two-pump system necessary for a private water supply?
• What is the acceptable pH range for drinking water?
• Where should the temperature setting be set for a residential water heater?
• What plumbing component is used to measure water flow?
• What document should be referenced if discrepancies arise with the blueprints?
• What is the purpose of a mixing valve?
• What is the recommended pitch for a sewer pipe of 3 inches or larger?
• Which type of water hardness indicates the presence of dissolved minerals that cannot be removed by boiling?
• Iron can be removed from water using which method?
• What can excessive water hammer in pipes indicate?
• What is the preferred spark gap size for a spark igniter?
• What does the term 'drawdown' refer to in pumping systems?
• What is a common method to locate a clogged drain?
• For how long must an air test on a water system be held and at what pressure?
• When is it permissible to use a 90-degree elbow in drainage systems?
• How far should a direct vent be located from a regulator vent?
• What is the correct way to install a ball valve?
• What is the acceptable distance for a horizontal vent pipe to be from its fixture?
• What is the purpose of a trap in a plumbing system?
• How can freezing temperatures affect plumbing pipes?
• Which component is typically added to well water systems to prevent contamination?
• What is the purpose of dilution air in a flue system?
• What is commonly checked in the venting system of gas appliances?
• What plumbing component helps prevent sediment buildup in a water heater?
• What is the purpose of a vent stack in plumbing?
• What can result from low heat rise in a gas appliance?
• To convert liters to imperial gallons, what is the correct calculation?
• How would you correct a jet pump two-pipe system that is sucking air?
• What is the recommended method to increase the blower motor speed on a furnace?
• Most resistance split phase motors typically fall into which horsepower range?
• What is a plumbing fixture outlet?
• What are the three types of grease interceptors?
• What is the definition of a "hot water recirculation system"?
• Which appliance is known for having low limits?
• What affects the amount of pressure produced by an impeller?
• What material is primarily used for sewer lines?
• What happens to soluble iron in a water system if not treated properly?
• What does the acronym "PVC" stand for in plumbing?
• Which type of plumbing system utilizes a Venturi tee?
• What is a fissure spring characterized by?
• What is the average lifespan of a water heater?
• Name a common cause of low water pressure in a plumbing system.
• Which plumbing joint allows for easier disassembly?
• Where are indirect connections prohibited in a building's plumbing system?
• In the installation of a dugout well, what should be the first component added?
• Why is proper venting important in plumbing systems?
• What is a common type of backflow preventer used in irrigation systems?
• What is the standard pressure for conducting an air test on plumbing systems?
• What is a common cause of a leaky faucet?
• What is an automatic indicator that an analog meter needs to be zeroed?
• What is complete combustion in natural gas primarily composed of?
• What should be done if a plumbing pipe freezes?
• Which component is essential to prevent backflow in plumbing systems?
• What stops the flush cycle in a diaphragm flush valve?
• Why is it important to use the correct fittings in plumbing?
• What step in the water softener regeneration process ensures the removal of accumulated minerals?
• What are the practical and theoretical lift numbers?
• What is the relationship between PSI and feet of head?
• Which of the following is NOT a step in the regeneration process of a water softener?
• Which of the following is NOT a type of well?
• What are the venting rules for an oil interceptor?
• What gauge of stainless steel is typically used for water closets in high-security areas?
• How many types of water springs are classified?
• How do you calculate the temperature rise in a ventilation system?
• What does “T and P” stand for in regards to water heaters?
• How does the starting current of a capacitor start motor compare to a resistance split phase motor?
• When does deadheading occur in a hydronic pump?
• What components can a tank tee on a well system have?
• Which methods are effective for removing hydrogen sulphide from water?
• Which of the following is an indication of water hardness in a plumbing system?
• What is the purpose of a pressure tank in a well system?
• What is the standard size of a test dial on a gas meter?
• What does the acronym "PEX" stand for in plumbing?
• Which test is mandatory for all pilot operated burners?
• What is the criterion for barrier-free control to be considered easily operable?
• What is the process called that brings noxious gases into contact with water?
• What is a sign of proper combustion in gas appliances?
• What causes galvanic corrosion in plumbing systems?
• What does the term "horizontal run" refer to in plumbing?
• After the safe start module is complete, what occurs in a direct spark ignition system?
• What is a common symptom of a faulty toilet flapper?
• Which factor is NOT typically considered when determining the type of plumbing fixtures to install in a residential building?
• In plumbing, what does "drainage pipe" primarily transport?
• What is typically used to measure the performance of a gas meter?
• What is the purpose of a vent stack?
• What is the maximum distance roof drains should be placed apart?
• What is the primary function of a pressure tank in a plumbing system?
• What is the recommended sodium intake level for individuals with hypertension?
• Why are transformers rated in VA instead of watts?
• What is the primary function of a sump pump?
• How does a pump typically function in a water system?
• How do you size a commercial garburator?
• Where should the primary circulator be located in a plumbing system?
• What causes a diaphragm flush valve to have a prolonged flush cycle?
• According to the Alberta Building Code, what are the minimum stall dimensions for barrier-free installation?
• What is the recommended slope for a drainage pipe?
• What is the minimum size of a residential water service pipe?
• What is the minimum size of a regular pressure tank typically used in residential plumbing?
• What may occur if the air circulation in an oil interceptor is inadequate?
• What can cause crumbling in cast iron pipes over time?
• How often should plumbing systems be inspected for maintenance?
• What should you check if one zone in a house is not getting heat?
• What is the significance of the "drainage area" when installing fixtures?
• What are the four types of pressure tanks used in plumbing systems?
• What are temperature sensing devices on heating systems referred to as?
• One pound of pressure will raise a column of water approximately how many feet?
• What is the most common size for residential copper water pipe?
• What type of knot is commonly used for a tag line?
• What is a common use for PVC piping in plumbing?
• What is the typical speed setting for a fan during cooling?
• What does the term "cross-connection" mean in plumbing?
• What is the maximum number of showers that can be connected to one drain?
• What does the term "drain field" refer to?
• What type of valve is commonly used for shutting off water flow?
• What is the definition of an "illegal connection" in plumbing?
• What is one of the primary roles of plumbing codes?
• What is the purpose of a sump pump?
• Which of the following methods is used to clean a clogged flush valve?
• What is the flame failure response time for HSI systems rated 400 MBH or less?
• What is the advantage of using CPVC over PVC in plumbing?
• What action can be taken if the heat rise in a system is excessively high?
• What can happen if a plumbing system is not properly vented?
• What contaminants can manganese greensand filters effectively remove?
• What setting would you select on a multimeter to measure a flame signal?
• Which type of pipe is generally used for venting purposes?
• Make up air units are interlocked with which of the following components?
• What is a common reason for requiring a plumbing permit before installation?
• What were 5 pound and 8 pound lead used for?
• What aspect of a plumbing system does the primary circulator primarily influence?
• What is the purpose of the brine tank refill during the regeneration of a softener?
• What is the function of a pressure-reducing valve?
• Which plumbing code regulates the installation of plumbing systems?
• Which statement correctly describes the functionality of a Venturi tee in plumbing systems?
• What is the maximum total water hardness allowed in residential applications?
• What should be installed to lower pH in a plumbing system?
• What is the typical lifespan of a copper pipe?
• Why is it important to zero an analog meter before use?
• What is the function of an iron filter in water treatment?
• Name a common method used to test plumbing pressure.
• How far must a thermocouple be inserted over a pilot flame?
• What type of tubing is commonly used for natural gas installations?
• Which type of burner requires secondary air to operate effectively?
• What tool is typically used to unclog a drain?
• What factor is used to categorize well types?
• How can you fix a urinal that is constantly splashing?
• What is the minimum size for a sewage holding tank?
• Which sewage tank is designed to be buried at the greatest depth?
• What is used to regenerate manganese greensand filters?
• What is one function of an impeller in a pump?
• What type of piping material is often used for drain, waste, and vent systems?
• How often should you inspect your sump pump?
• Which material does a neutralizing filter use to help reduce acidic water?
• What is the purpose of the slow rinse step in a water softener's regeneration?
• How can you identify a gas pipe versus a water pipe?
• What is the sanitation temperature for a commercial dishwasher?
• How far must the potable water source for RV refill be from the sewage connection?
• What does a clip-on ammeter measure?
• How is recovery rate defined in the context of water supply systems?
• What indicates that a gas appliance is underfired?
• If the scum in a septic tank is too short, what could be a likely cause?
• What is the correct order of sequence for fittings surrounding a steam trap?
• How many draft categories of gas burning appliances are there?