Introduction to Plumbing Basics
39 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

At standard atmospheric pressure, what is the boiling point of water?

  • 150°F
  • 212°F (correct)
  • 100°F
  • 180°F

    • What happens to the boiling point of water as atmospheric pressure decreases?

  • It remains the same
  • It increases
  • It becomes unpredictable
  • It decreases (correct)

    • What is the specific weight of water commonly used for engineering computations?

  • 62.4 lb/ft3 (correct)
  • 64 lb/ft3
  • 60 lb/ft3
  • 65 lb/ft3

    • What is specific gravity (s.g.) a ratio of?

    <p>Specific weight of a fluid to the specific weight of water</p> Signup and view all the answers

    At what temperature is water most dense?

    <p>39°F</p> Signup and view all the answers

    Which of the following materials would have a specific gravity less than 1.0?

    <p>Oil</p> Signup and view all the answers

    How is specific weight defined?

    <p>Weight per unit volume</p> Signup and view all the answers

    What does the nominal pipe size (NPS) indicate?

    <p>The approximate inside diameter of the pipe</p> Signup and view all the answers

    Which material is NOT commonly used to make pipes?

    <p>Glass</p> Signup and view all the answers

    How are pipes classified in terms of their wall thickness?

    <p>By their schedule number</p> Signup and view all the answers

    Which of the following is a typical nominal pipe size?

    <p>3/4 inch</p> Signup and view all the answers

    What is the significance of the schedule of a pipe?

    <p>It influences the pipe's wall thickness and pressure rating</p> Signup and view all the answers

    What type of structures are tubes primarily used for?

    <p>Structural purposes such as frames and supports</p> Signup and view all the answers

    Which statement about pipes and tubes is correct?

    <p>Pipes are designed with specific industry standards in mind</p> Signup and view all the answers

    What does a higher schedule number indicate regarding pipes?

    <p>Thicker walls</p> Signup and view all the answers

    What types of materials are fittings for plastic, copper, and brass pipe made of?

    <p>The same materials as the pipe being connected</p> Signup and view all the answers

    Which valve type is NOT mentioned as a category of valves in plumbing systems?

    <p>Ball</p> Signup and view all the answers

    What is the primary purpose of valves in a plumbing system?

    <p>To control flow of water</p> Signup and view all the answers

    Which process follows coagulation in the water treatment process?

    <p>Filtration</p> Signup and view all the answers

    What is a characteristic feature of the inner workings of most valves?

    <p>They are generally accessible for repairs</p> Signup and view all the answers

    What is the main benefit of proper location of valves in a plumbing system?

    <p>Simplifies repairs</p> Signup and view all the answers

    Which of the following components is NOT involved in the water treatment process?

    <p>Heaters</p> Signup and view all the answers

    What is the role of coagulants in water treatment?

    <p>Neutralize electric charges on suspended particles</p> Signup and view all the answers

    What is the definition of gauge pressure?

    <p>Pressure excluding the atmosphere</p> Signup and view all the answers

    What is absolute pressure?

    <p>Total pressure including atmospheric pressure</p> Signup and view all the answers

    What types of water are considered potable?

    <p>Water that is clean and suitable for drinking</p> Signup and view all the answers

    What does the term 'water table' refer to?

    <p>The level below which soil is saturated with water</p> Signup and view all the answers

    Which statement correctly describes surface water?

    <p>It exists in rivers, lakes, and reservoirs on the Earth's surface</p> Signup and view all the answers

    What primarily distinguishes nonpotable water from potable water?

    <p>Nonpotable water can be used for purposes other than drinking</p> Signup and view all the answers

    What is an artesian well?

    <p>A well where water can rise to the surface without pumping</p> Signup and view all the answers

    What characteristic of groundwater allows it to remain undisturbed for long periods?

    <p>It can be trapped in sediment and rock</p> Signup and view all the answers

    What must exist at a plumbing fixture for water to flow?

    <p>A pressure difference where water pressure is higher than atmospheric pressure</p> Signup and view all the answers

    What is the pressure at the base of a 1 ft high column of water?

    <p>0.433 psi</p> Signup and view all the answers

    How is static head pressure loss calculated?

    <p>By multiplying the water height by 9.8 kPa</p> Signup and view all the answers

    What influence does friction have on water pressure?

    <p>It decreases water pressure and is complex to compute</p> Signup and view all the answers

    What happens to pressure difference when there is an upward elevation change?

    <p>It becomes negative</p> Signup and view all the answers

    Which of the following is NOT a factor that affects friction head losses in water systems?

    <p>Color of the fluid</p> Signup and view all the answers

    What must the total dynamic head generated by a pump do?

    <p>Overcome the head of the system through which it pumps water</p> Signup and view all the answers

    Which of the following equations correctly represents the static head in psi?

    <p>ΔPstatic = 0.433Z</p> Signup and view all the answers

    Study Notes

    Introduction to Plumbing

    • Water is a chemical compound with a formula of H2O.
    • Water is tasteless and odorless in its pure state.
    • Under standard atmospheric pressure, water boils at 212°F (100°C).
    • The boiling point of water decreases with lower atmospheric pressure and increases with higher pressures.

    Fundamental Units

    • Specific weight is the weight per unit volume of a substance, often measured in kg/L.
    • Specific Gravity is the ratio of the specific weight of a substance to the specific weight of water at 39°F (4°C).
    • Materials with a specific gravity less than 1.0 are less dense than water (e.g., oil).
    • Pressure is a force per unit area.
    • Gauge pressure excludes atmospheric pressure, while Absolute pressure includes atmospheric pressure.

    Water Supply

    • Potable water is suitable for human drinking, cooking, and cleaning.
    • Non-potable water is used for purposes other than drinking, cooking, or cleaning.
    • Surface water is found on the Earth's surface, such as rivers, lakes, and ponds.
    • Groundwater is water found beneath the surface, trapped in sediment and rock.
    • Artesian wells are formed when groundwater is forced upward due to pressure.

    Tubing and Pipe

    • Pipes are tubular structures used to convey fluids (liquids or gases) from one point to another.
    • Tubes are hollow structures used primarily for structural purposes.

    Pipe Sizing

    • Nominal Pipe Size (NPS) is a numerical designation that indicates the approximate inside diameter of a pipe.
    • NPS Sizing is typically expressed in inches, with common sizes like 1/8 inch, 1/4 inch, 1/2 inch, 3/4 inch, and 1 inch.
    • The Schedule of a pipe refers to its wall thickness and, indirectly, its pressure rating.
    • Higher Schedule numbers correspond to thicker walls and higher pressure ratings.

    Fittings and Valves

    • Fittings are used to connect pipe lengths, turn pipes, and create branch lines.
    • Valves control the flow of water throughout a system.
    • Valves are generally classified as gate, globe, check, and angle valves.

    Water Distribution System

    • Coagulation uses chemicals to neutralize charges on suspended particles, causing them to clump together.
    • Filtration physically traps remaining particles and flocs, further purifying water.

    Water Pressure Considerations

    • Pressure difference (ΔP) is the driving force of fluid flow.
    • A 1 ft high column of water creates a pressure of 0.433 psi at its base.
    • Friction head (ΔPfriction) is a pressure loss due to friction within a pipe system.
    • Total dynamic head (ΔPTDH) is the total pressure that a pump must overcome to deliver water at a specific flow rate.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Related Documents

    Engineering Utilities 2 PDF

    Description

    This quiz covers fundamental concepts in plumbing, including the properties of water, specific weight, and pressure measurements. Delve into the differences between potable and non-potable water, along with understanding specific gravity and its implications in plumbing systems.

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser