2024 Plumbing Year 1 Midterm and Final Exam New Latest Version with All Questions and 100% Correct Answers Each with 50 Questions
2024 Plumbing Year 1 Midterm and Final Exam New
Latest Version with All Questions and 100% Correct
Answers Each with 50 Questions
Final Exam
The chain pipe vise is designed to hold pieces of pipe that are small. ——— Correct
Answer ——— False
A method of joining copper tube that is safe in an environment that includes a fire
hazard is ——— Correct Answer ——— flare joints
A disadvantage of PVC plastic pipe is that it has a limited life span. ——— Correct
Answer ——— False
All these fasteners can be used to secure cast-iron pipe supports and hangers to
wooden structures EXCEPT _. ——— Correct Answer ——— anchors
The plumber’s hammer is also called the sledge hammer. ——— Correct Answer ——–
- False
Potable water is ——— Correct Answer ——— water generally free from impurities and
safe to consume by the public.
Steel pipe is usually connected with fittings that are threaded. ——— Correct Answer —
—— True
To calculate fitting allowance, measure the fitting from its center to its face, then
subtract the thread-in measurement. ——— Correct Answer ——— True
An advantage of using plastic pipe in plumbing installations is that plastic . ——— Correct Answer ——— requires little maintenance When using soft copper tubing, a plumber can reduce the number of joints in the plumbing system by _______. ——— Correct Answer ——— bending
A standard bathtub is . ——— Correct Answer ——— 5′ long The process of joining tubes and fittings by heating the materials and melting a filler metal into the joint to seal the tubes together is called ______. ——— Correct
Answer ——— soldering
A plot plan does not show _. ——— Correct Answer ——— aerial views of
rooms
When working with piping in the ground, ensure that the pipe lays on a firm bed . –
——– Correct Answer ——— for its entire length
When joining ABS pipe to PVC pipe, the correct joint requires a . ——— Correct
Answer ——— transition fitting
The information printed on the outside of copper tubing does not include the joining
method. ——— Correct Answer ——— True
Because of the pipe material’s flexibility, manifold plumbing distribution systems are
commonly made using . ——— Correct Answer ——— PEX pipe An adjustable wrench is a smooth jawed wrench used for turning nuts, bolts, small pipe fittings and chrome-plated pipe fittings. ——— Correct Answer ——— True __ can occur due to material failure or poor workmanship. ——— Correct
Answer ——— Leakage
When using soft copper tubing, a plumber can reduce the number of joints in the
plumbing system by soldering. ——— Correct Answer ——— False
Cast-iron pipe is classified by its _. ——— Correct Answer ——— wall thickness
The part of the fitting that is used the least often when measuring pipe is the face. ——–
- Correct Answer ——— False
An advantage of using plastic pipe in plumbing installations is that plastic . ——— Correct Answer ——— requires little maintenance The natural way of purifying water is through chlorinization. ——— Correct Answer —— — False To provide maximum support for horizontal pipe runs, the maximum distance that a hanger should be installed from a joint is _______. ——— Correct Answer ——
— 18 inches
Faucet spouts set below the rim of a fixture is a form of cross connection. ———
Correct Answer ——— True
A document allowing a licensed plumber to perform plumbing work according to a plan
at a specified location is called a(n) ——— Correct Answer ——— permit
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The process of joining tubes and fittings by heating the materials and melting a filler metal into the joint to seal the tubes together is called
soldering
The part of the hanger that touches or connects directly to the tube is called the
tube attachment
An example of an insulating material is
glass fiber
In a solder fitting, the space that allows solder to flow into the joint is called the
capillary action gap
Copper tube should never be joined using a
threaded joint
Ductile iron is made from a combination of molten gray iron and
magnesium
When measuring a no-hub cast-iron pipe, you must
subtract the allowance for the gasket ridge
While using a 60 inch-pound torque wrench to tighten the coupling clamps on a no-hub pipe, a plumber hears a clicking sound. This means that
the wrench has disengaged
The two types of testing that can be performed at the rough-in stage are
air pressure and hydrostatic
Cast-iron pipe is classified by its
wall thickness
The side openings in closet bends are available as either
left-hand or right-hand
When permitted by applicable codes, ductile iron pipe is usually required when installing pipe under buildings if the diameter of the pipe is larger than
15 inches
To protect against abrasive and corrosive materials, galvanized pipe is coated with
zinc
An installation of steel piping will need to be occasionally disassembled and then reassembled. To make the installation process easier, use
Unions
For optimal use of a chain vise, keep the chain
Oiled
High-alloy steel is also called
stainless steel
The 3 basic components of hangers are
pipe attachments, connectors, and structural attachments
When fastening a piping system to concrete, use
anchors
When threading steel pipe, cut the threads until the number of threads that appear at the other end of the die is
2
Marble is not used as a material in decorative fixtures because it
absorbs water
Depending on your local code, three options for venting a dishwasher are to install an air gap assembly in the discharge piping; to loop the drain hose above the fixture’s flood-level rim; or, to
connect a discharge hose from a kitchen sink or domestic dishwasher through a single 1-1/2 inch trap
The most common fixture style of drinking fountain and water cooler is
wall-hung
According to ADA requirements for accessible water closets, the maximum height above the floor that controls for flush valves and flushometers can be mounted is
44 inches
Because self-closing compression faucets have a tendency to receive too little water flow, one problem that can occur with them is that
lime and other minerals can build up in the system
The type of waste disposal system used by most residential dishwashers is called
pump-out
The waste passageways of reverse-trap waters closets are
2 inches in diameter
The DWV system is
a system of piping used to remove waste from a building’s fixtures and drains
A basket strainer is an example of a
fixture drain
Grease interceptors are commonly installed in
restaurants
The point where wastewater leaves the trap and enters the drainage piping is called the
trap arm
A homeowner is experiencing a problem with a water closet because it keeps losing its trap seal. The water closet is located in a powder room that is seldom used. The problem is most likely due to
evaporation
A 1/6 elbow fitting will turn a run of pipe by
60 degrees
The main horizontal pipe inside a building is called the
building drain
Plumbing codes require that manholes be provided for underground piping unless the piping
is 8 inches or larger in diameter
A trap is likely to siphon if the horizontal leg is installed with a drop greater than
1/4 inch per foot
Codes typically require hub-type fittings to be installed so that the wastes flow
from the bell to the spigot end of the pipe
In private water supply systems, water is drawn from
a well
To dissolve carbon dioxide and to oxidize iron and manganese, water treatment systems use
aerators
Water meters are usually installed by
a city or county employee
The _ should be installed so that it bypasses the water softener.
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