Water Supply and Distribution Systems Quiz

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Questions and Answers

What is the main advantage of a direct or upfeed system in a cold water distribution system?

  • Sanitary due to airtight water chamber RMP 01
  • Not affected by power interruptions (correct)
  • Eliminate cost of pumps and tanks
  • Having compact pumping unit and adaptable air pressure

In a plumbing system, which component carries water from the source to the building?

  • Sewage system
  • NOTA
  • Water supply and distribution system (correct)
  • Drainage system

What is the recommended depth below finish ground level for vitrified clay pipes used in building drains or sewers?

  • 0.30 m (correct)
  • 0.50 m
  • 0.20 m
  • 0.60 m

Which system is not affected by peak load hours and time needed to replace broken parts in terms of water supply?

<p>Overhead feed/gravity system (D)</p> Signup and view all the answers

What is the retention period for suspended matters in a septic tank to settle and stabilize?

<p>24 hours (B)</p> Signup and view all the answers

Which disadvantage is NOT associated with an overfeed or gravity system?

<p>Water subject to contamination (D)</p> Signup and view all the answers

What is the minimum water delivery in liters per minute for an outlet of a wet standpipe at a residual pressure of 1.8 kilos per sqm?

<p>132 liters per minute (A)</p> Signup and view all the answers

In a water distribution system, which location does not require the use of a full open valve?

<p>on every hose bibb (A)</p> Signup and view all the answers

What poor design in a plumbing system causes water supply drop when fixtures in series are simultaneously opened?

<p>insufficiency in the size of the water service and distribution pipe (C)</p> Signup and view all the answers

Which type of valve is required at locations like the supply pipe to every water heater in a water distribution system?

<p>ball valve (D)</p> Signup and view all the answers

What type of tank is used in a water system to store water at a certain pressure level?

<p>Pressure tank (C)</p> Signup and view all the answers

What causes a pressure tank or water system to experience low water supply when fixtures in series are opened simultaneously?

<p>insufficient capacity of the tank (D)</p> Signup and view all the answers

What is the impact of using PVC or other plastic pipes on a plumbing system's water supply?

<p>reduced flow rate of water (C)</p> Signup and view all the answers

Which type of valve uses a rubber gasket to shut off water flow and needs to be installed correctly for proper operation?

<p>Stop valve (D)</p> Signup and view all the answers

What process involves exchanging 'hard' ions for 'soft' ions, resulting in water with reduced hardness?

<p>De-ionized water (B)</p> Signup and view all the answers

Which system of water purification uses a semi-permeable membrane to separate impurities from drinking water?

<p>Reverse osmosis (D)</p> Signup and view all the answers

What type of water is known to contain trace minerals, chemicals, viruses, and bacteria, making it harder than distilled water?

<p>Hard water (A)</p> Signup and view all the answers

Which type of water may be hard (like calcium-hardened water) or soft (like rainwater) without being boiled?

<p>Raw water (A)</p> Signup and view all the answers

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