Plumbing Competency Preparation
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This quiz tests general plumbing knowledge.
- 1.When are hot and cold shower valves identical?
- A.
Always
- B.
Never
- C.
Sometimes
- D.
Not Sure
- 2.When can a diverter valve replace a hot or cold shower valve?
- A.
Always
- B.
Never
- C.
Sometimes
- D.
Not Sure
- 3.Stem packing is used when leaking occurs at which location?
- A.
Tub Spout
- B.
Shower valve
- C.
Drain
- D.
Shower Head
- 4.Where is the cold water valve located?
- A.
Left Side
- B.
Right Side
- C.
Center
- D.
Bottom
- 5.What do all toilets have built into them?
- A.
Anti-Syphon Valve
- B.
P-Trap
- C.
T P valve
- D.
Shut-Off valve
- 6.What can never be re-used when replacing a toilet?
- A.
Flange Bolts
- B.
Wax Ring
- C.
Plastic Shims
- D.
Closet Flange
- 7.How many p-traps does a double kitchen sink require?
- A.
One
- B.
Two
- C.
Three
- D.
Four
- 8.What fits between a closet flange and toilet bowl?
- A.
Spud washer
- B.
Wax Ring
- C.
O-Ring
- D.
Lock Washer
- 9.What connects a P-Trap to the drain?
- A.
Coupling
- B.
Elbow
- C.
Trap Adaptor
- D.
Union
- 10.Where can the size of a P-Trap be changed?
- A.
J-Bend
- B.
Wall
- C.
Both the J-bend and the wall
- D.
Neither the j-bend or the wall
- 11.The tail piece on a lavatory is what diameter?
- A.
1 1/2"
- B.
1 1/4"
- C.
2 1/2"
- D.
2 1/4"
- 12.The tail piece on a kitchen sink is what diameter?
- A.
1 1/2"
- B.
1 1/4"
- C.
2 1/2"
- D.
2 1/4"
- 13.What color of flame is best for soldering?
- A.
Red
- B.
Yellow
- C.
Blue
- D.
Orange
- 14.What must be applied to a copper fitting and copper pipe before soldering?
- A.
Water
- B.
Oil
- C.
Flux
- D.
Glue
- 15.What substance is not permitted in solder which is used for water supply pipes?
- A.
Tin
- B.
Brass
- C.
Lead
- D.
Steel
- 16.What is the slope most often required for drainage?
- A.
1/4" per foot
- B.
1/2" per foot
- C.
3/4" per foot
- D.
1" per foot
- 17.What type of adhesive is used to connect PVC pipe and fittings?
- A.
Elmers Glue
- B.
Silicone
- C.
Solvent Glue
- D.
JB Weld
- 18.PSI is the abbreviation for what?
- A.
Pressure Side In
- B.
Pounds per Square Inch
- C.
Plumbing Safety Inquiry
- D.
Pounds per Square Foot
- 19.The anode rod on a water heater is made of what material?
- A.
Copper
- B.
Magnesium
- C.
Galvanized Pipe
- D.
Plastic
- 20.The safety valve on a water heater is called what?
- A.
Anti-Syphon valve
- B.
Shut-off Valve
- C.
Drain Valve
- D.
TP valve
- 21.The drain valve on a water heater has what kind of thread?
- A.
Standard Pipe Thread
- B.
Compression Thread
- C.
Garden Hose Thread
- D.
Fine Thread
- 22.A 50 gallon water heater is operated by how many volts?
- A.
120 volts
- B.
240 volts
- C.
360 volts
- D.
115 volts
- 23.How many thermostats does an electric water heater have?
- A.
One
- B.
Two
- C.
Three
- D.
None
- 24.The water supply pipe that enters and leaves a water heater is what size?
- A.
1/4"
- B.
1/2"
- C.
3/4"
- D.
1"
- 25.What is used to unclog a toilet?
- A.
Mechanical Power Auger
- B.
Closet Auger
- C.
Fish Tape
- D.
Garden Hose
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