Lesson 6 Plumbing System Components and Water Treatment Exam
| Question 1 | 5 / 5 points |
What type of union is used to prevent corrosion?
Question options:
| Hybrid union | |||
| Dielectric union | |||
| Neoprene union | |||
| Transition union | |||
| Question 2 | 5 / 5 points | ||
What is the most common type of water heater?
Question options:
| Storage | |||
| Instantaneous | |||
| Solar | |||
| Hybrid | |||
| Question 3 | 5 / 5 points | ||
What is the most common way of killing bacteria in water?
Question options:
| Chlorination | |||
| Pasteurization | |||
| Filtering | |||
| Boiling | |||
| Question 4 | 0 / 5 points | ||
How far away should a well be from sources of contamination?
Question options:
| 50 feet | |||
| 100 feet | |||
| 50 yards | |||
| 100 yards | |||
| Question 5 | 5 / 5 points | ||
Which type of valve can fully open or closed by turning the handle 90 degrees?
Question options:
| Ball valve | |||
| Check valve | |||
| Globe valve | |||
| Pressure relief valve | |||
| Question 6 | 5 / 5 points | ||
Which type of well is created using an earth auger?
Question options:
| Dug well | |||
| Driven well | |||
| Drilled well | |||
| Bored well | |||
| Question 7 | 5 / 5 points | ||
What type of valve is designed specifically for use in the DWV system?
Question options:
| Pressure regulator | |||
| Flush valve | |||
| Check valve | |||
| Back water valve | |||
| Question 8 | 5 / 5 points | ||
What point on the pH scale is considered neutral?
Question options:
| 0 | |||
| 7 | |||
| 14 | |||
| 5 | |||
| Question 9 | 5 / 5 points | ||
When using pasteurization, to what minimum temperature must the water be heated to kill bacteria?
Question options:
| 160° C | |||
| 180° F | |||
| 100° C | |||
| 160° F | |||
| Question 10 | 5 / 5 points | ||
What is the largest-diameter valve available?
Question options:
| 6 inches | |||
| 10 inches | |||
| 12 inches | |||
| 15 inches | |||
| Question 11 | 5 / 5 points | ||
Which type of pump uses an ejector to help move water?
Question options:
| Reciprocating pump | |||
| Jet pump | |||
| Centrifugal pump | |||
| Rotary pump | |||
| Question 12 | 5 / 5 points | ||
What type of valve can be used to drain part of a plumbing system?
Question options:
| Flush valve | |||
| Gate valve | |||
| Stop and waste valve | |||
| Control stop | |||
| Question 13 | 5 / 5 points | ||
What is the heaviest type of copper pipe?
Question options:
| K | |||
| L | |||
| M | |||
| DWV | |||
| Question 14 | 5 / 5 points | ||
Which type of well would be used to access water 30 feet below ground?
Question options:
| Dug well | |||
| Driven well | |||
| Drilled well | |||
| Bored well | |||
| Question 15 | 5 / 5 points | ||
Which type of valve is installed at the water main?
Question options:
| Corporation valve | |||
| Check valve | |||
| Gate valve | |||
| Control stop | |||
| Question 16 | 5 / 5 points | ||
What is the name of the tube that removes by-products of combustion from a water heater?
Question options:
| Exhaust | |||
| Flue | |||
| Vent | |||
| Stack | |||
| Question 17 | 5 / 5 points | ||
Which type of fitting is used to connect a toilet to a waste pipe?
Question options:
| P-trap | |||
| Closet flange | |||
| Street wye | |||
| Sanitary tee | |||
| Question 18 | 5 / 5 points | ||
What filter is used to remove particles from water and make the water clearer?
Question options:
| Sediment filter | |||
| Scale filter | |||
| Charcoal filter | |||
| Activated-carbon filter | |||
| Question 19 | 5 / 5 points | ||
Which type of plastic piping is the most flexible?
Question options:
| ABS | |||
| PVC | |||
| PE | |||
| PEX | |||
| Question 20 | 5 / 5 points | ||
How high can a helical pump lift water?
Question options:
| 200 feet | |
| 300 feet | |
| 400 feet | |
| 500 feet |
Which type of water heaters save the most energy?
Question 4 options:
| Storage | |
| Solar | |
| Instantaneous | |
| Electrically powered |
Which material should not be used in modern plumbing systems?
Question 10 options:
| Vitrified clay | |
| Galvanized steel | |
| Cast iron | |
| Lead |
What type of valve limits the flow of water to one direction?
Question 11 options:
| Control valve | |
| Check valve | |
| Flush valve | |
| Ball valve |
Which type of water heater is the most expensive to install?
Question 12 options:
| Gas powered | |
| Storage | |
| Instantaneous | |
| Solar |
……………………………………………..$30
