Plumbing Competency Preparation
This quiz tests general plumbing knowledge.
- 1.
When are hot and cold shower valves identical?
- A.
Always
- B.
Never
- C.
Sometimes
- D.
Not Sure
Correct Answer
C. Sometimes -
- 2.
When can a diverter valve replace a hot or cold shower valve?
- A.
Always
- B.
Never
- C.
Sometimes
- D.
Not Sure
Correct Answer
B. Never -
- 3.
Stem packing is used when leaking occurs at which location?
- A.
Tub Spout
- B.
Shower valve
- C.
Drain
- D.
Shower Head
Correct Answer
B. Shower valve -
- 4.
Where is the cold water valve located?
- A.
Left Side
- B.
Right Side
- C.
Center
- D.
Bottom
Correct Answer
B. Right Side -
- 5.
What do all toilets have built into them?
- A.
Anti-Syphon Valve
- B.
P-Trap
- C.
T P valve
- D.
Shut-Off valve
Correct Answer
B. P-Trap -
- 6.
What can never be re-used when replacing a toilet?
- A.
Flange Bolts
- B.
Wax Ring
- C.
Plastic Shims
- D.
Closet Flange
Correct Answer
B. Wax Ring -
- 7.
How many p-traps does a double kitchen sink require?
- A.
One
- B.
Two
- C.
Three
- D.
Four
Correct Answer
A. One -
- 8.
What fits between a closet flange and toilet bowl?
- A.
Spud washer
- B.
Wax Ring
- C.
O-Ring
- D.
Lock Washer
Correct Answer
B. Wax Ring -
- 9.
What connects a P-Trap to the drain?
- A.
Coupling
- B.
Elbow
- C.
Trap Adaptor
- D.
Union
Correct Answer
C. Trap Adaptor -
- 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
Correct Answer
C. Both the J-bend and 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"
Correct Answer
B. 1 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"
Correct Answer
A. 1 1/2" -
- 13.
What color of flame is best for soldering?
- A.
Red
- B.
Yellow
- C.
Blue
- D.
Orange
Correct Answer
C. Blue -
- 14.
What must be applied to a copper fitting and copper pipe before soldering?
- A.
Water
- B.
Oil
- C.
Flux
- D.
Glue
Correct Answer
C. Flux -
- 15.
What substance is not permitted in solder which is used for water supply pipes?
- A.
Tin
- B.
Brass
- C.
Lead
- D.
Steel
Correct Answer
C. Lead -
- 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
Correct Answer
A. 1/4" 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
Correct Answer
C. Solvent Glue -
- 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
Correct Answer
B. Pounds per Square Inch -
- 19.
The anode rod on a water heater is made of what material?
- A.
Copper
- B.
Magnesium
- C.
Galvanized Pipe
- D.
Plastic
Correct Answer
B. Magnesium -
- 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
Correct Answer
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
Correct Answer
C. Garden Hose 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
Correct Answer
B. 240 volts -
- 23.
How many thermostats does an electric water heater have?
- A.
One
- B.
Two
- C.
Three
- D.
None
Correct Answer
B. Two -
- 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"
Correct Answer
C. 3/4" -
- 25.
What is used to unclog a toilet?
- A.
Mechanical Power Auger
- B.
Closet Auger
- C.
Fish Tape
- D.
Garden Hose
Correct Answer
B. Closet Auger -
- 26.
A dip tube is located on what type of water heater?
- A.
Gas Water Heater
- B.
Electric Water Heater
- C.
Both Gas & Electric Water Heater
- D.
None of the Above
Correct Answer
C. Both Gas & Electric Water Heater -
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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
-
Current Version
-
Mar 21, 2022Quiz Edited by
ProProfs Editorial Team -
Aug 31, 2010Quiz Created by
Josephb21
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