PLUMBING LEVEL #2 FINAL EXAM
REVIEW QUESTIONS AND ANSWERS
When working on electrically powered equipment, which of the following should be the
most important safety practice? - Answer-Be sure equipment is de-energized
The NBC specifies that floor set and wall-hung water closets must have a minimum
spacing of _____ mm on either side of the center of the water closet flange to a wall or
another fixture to allow freedom of movement. - Answer-380 mm
A ___________ waste and overflow is a combination waste and overflow device that
consists of a stopper that is raised or lowered by pushing on it. - Answer-clicker
Canada requires water to be stored at a temp. of _________ degrees Celsius to control
dangerous bacteria, such as legionella. - Answer-60 degrees Celsius
The _____________ waste and overflow is a combination waste overflow device
consisting of a stopper with a raised knob that can be operated by the operator. -
Answer-Lift and Turn
What type of water filter is often installed in the water line servicing a refrigerator with an
integral icemaker and water dispenser, under a kitchen, or in a drinking fountain? -
Answer-Point-of-use
A (n) ___________ valve mixes cold water with hot water exiting a hot water storage
tank to deliver hot water to fixtures at a safe temp. at around 49 degrees Celsius (120
degrees Fahrenheit)? - Answer-Thermostatic mixing
Which pilot ignition type remains on at all times regardless of whether it's sensed or
not? - Answer-Standing Pilot
What is the barometric pressure at 5000 fr. above sea level? - Answer-12.2 psia
What is the theoretical volume of air that must be mixed with 1 cu.ft of CH4 to achieve
perfect combustion? - Answer-10 cu.ft
Name a product of incomplete combustion which is toxic and has a penetrating odor. -
Answer-Aldehydes
What is the total air requirement for a gas appliance, equipped with a draft hood, to
operate safely and efficiently? - Answer-30 cu.ft of air per 1000 btuh input
Name a product of incomplete combustion which has no odor, taste or smell. - Answer-
CO (Carbon Monoxide)
REVIEW QUESTIONS AND ANSWERS
When working on electrically powered equipment, which of the following should be the
most important safety practice? - Answer-Be sure equipment is de-energized
The NBC specifies that floor set and wall-hung water closets must have a minimum
spacing of _____ mm on either side of the center of the water closet flange to a wall or
another fixture to allow freedom of movement. - Answer-380 mm
A ___________ waste and overflow is a combination waste and overflow device that
consists of a stopper that is raised or lowered by pushing on it. - Answer-clicker
Canada requires water to be stored at a temp. of _________ degrees Celsius to control
dangerous bacteria, such as legionella. - Answer-60 degrees Celsius
The _____________ waste and overflow is a combination waste overflow device
consisting of a stopper with a raised knob that can be operated by the operator. -
Answer-Lift and Turn
What type of water filter is often installed in the water line servicing a refrigerator with an
integral icemaker and water dispenser, under a kitchen, or in a drinking fountain? -
Answer-Point-of-use
A (n) ___________ valve mixes cold water with hot water exiting a hot water storage
tank to deliver hot water to fixtures at a safe temp. at around 49 degrees Celsius (120
degrees Fahrenheit)? - Answer-Thermostatic mixing
Which pilot ignition type remains on at all times regardless of whether it's sensed or
not? - Answer-Standing Pilot
What is the barometric pressure at 5000 fr. above sea level? - Answer-12.2 psia
What is the theoretical volume of air that must be mixed with 1 cu.ft of CH4 to achieve
perfect combustion? - Answer-10 cu.ft
Name a product of incomplete combustion which is toxic and has a penetrating odor. -
Answer-Aldehydes
What is the total air requirement for a gas appliance, equipped with a draft hood, to
operate safely and efficiently? - Answer-30 cu.ft of air per 1000 btuh input
Name a product of incomplete combustion which has no odor, taste or smell. - Answer-
CO (Carbon Monoxide)
