Term
| What is the freezing point of Water? |
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Definition
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Term
| what is the boiling point of water |
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Definition
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Term
| what two natural laws of physics is water affected by? |
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Definition
| Law of specific heat and law of latent heat of vaporation |
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Definition
| a measure of the heat absorbing capacity of a substance |
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Term
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Definition
| raise the temperature of 1 pound of water 1 degree fahrenheit |
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Term
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Definition
| the quantity of heat absorbed by a substance when it changes a from a liquid to a vapor |
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Term
| How many BTUS is needed to convert water to steam? |
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Definition
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Term
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Definition
| the tendency of a liquid to possess internal resistance to flow |
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Term
| What is specific gravity? |
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Definition
| the density of liquids in relation to water. water is given a value of 1 |
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Term
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Definition
| pressure per square foot PSF or pounds per square inch PSI |
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Term
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Definition
| a simple measure of weight and is usually expressed in pounds or kilos |
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Term
| what is the weight of 1 cubic foot of water? |
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Definition
| approximately 62.5 pounds |
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Term
| What is velocity head pressure? |
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Definition
| the speed at which a fluid travels through hose or pipe is developed |
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Term
| first principle of pressure |
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Definition
| fluid pressure is perpendicular to any surface on which it acts |
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Term
| second principle of pressure? |
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Definition
| fluid pressure at rest is the same intensity in all directions |
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Term
| 3rd principle of pressure |
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Definition
| pressure applied to a cinfined fluid is transmitted equally in all directions |
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Term
| 4th principle of pressure |
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Definition
| pressure of a liquid in an open vessel is proportional to its depth. |
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Term
| 5th principle of pressure |
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Definition
| pressure of a liquid in an open vessel is proportional to the density. |
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Term
| 6th principle of pressure |
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Definition
| pressure of a liquid on the bottom of a vessel is independant on the shape of the vessel. |
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Term
| What is atmospheric pressure? |
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Definition
| pressure exerted on the earths surface. |
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Term
| what is the atmospheric pressure force |
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Definition
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Term
| what is a common method in measuring atmospheric pressure? |
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Definition
| compare it with a column of mercury |
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Term
| a pressure of 1 psi will raise mercury? |
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Definition
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Term
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Definition
| any pressure less than atmospheric pressure |
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Definition
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| what is another term for expressing pressure? |
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Definition
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Term
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Definition
| the height of a water supply above the discharge orifice. |
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Term
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Definition
| stored potential energy available to force water through pipe, fire hose, adapters. static means at rest |
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Term
| what is normal operating pressure |
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Definition
| pressure found in a water distribution system during normal consumption demands. |
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Term
| what is residual pressure? |
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Definition
| that part of the total available pressure not used to overcome friction loss or gravity while forcing water through |
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Term
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Definition
| forward velocity pressure while water is flowing. |
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Term
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Definition
| refers to the center line of the pump or the bottom of a static water supply source above or below ground level |
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Term
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Definition
| the position of an object above or below sea level |
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Term
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Definition
| part of the total pressure lost while forcing water through pipe. |
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Term
| first principle of friction loss |
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Definition
| friction loss varies with the length of the hose |
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Term
| second principle of friction loss |
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Definition
| when hoses are the same friction loss varies with increase in pressure |
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Term
| third principle of friction loss |
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Definition
| friction loss varies with diameter of hose |
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Term
| 4th principle of friction loss |
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Definition
| friction loss is the same regardless of the pressure on the water |
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Term
| whats a physical property of water |
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Definition
| its incompressible same volume at both ends |
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Term
| what are some means of moving water? |
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Definition
| direct pumping system, gravity system, and combination |
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Term
| What is a dead-end hydrant? |
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Definition
| a hydrant that receives water from only one direction |
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Term
| what is a circulating feed or looped line? |
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Definition
| a hydrant that receives from two or more directions |
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Term
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Definition
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Term
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Definition
| intermediate pipes that reinforces grip |
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Term
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Definition
| main aupplier for hydrant |
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Term
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Definition
| there is exactly one inflow point and one outflow point |
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Term
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Definition
| also referred to as a loop. more than one inflow. |
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Term
| what types of valves are there? |
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Definition
| indicating and non indicating |
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Term
| what are two common indicator valves |
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Definition
| post indicator valve and outside stem and yoke valve |
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Term
| what is the most common hydrant in the US? |
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Definition
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Term
| what is thre common variety of a dry barrel hydrant? |
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Definition
| two 2 1/2in outlets and one 4 1/2in outlet called a pumper or steamer |
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Definition
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Definition
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Definition
| for us. require 500 gpm with 100 gpm residual |
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Term
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Definition
| for them. requires 100 gpm at the most remote connection. |
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Term
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Definition
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Term
| what is the duration of water supplies for exterior fire fighting |
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Definition
| 2 hours for up to 2500 gpm |
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