Chapter 6 Pump Ops 1. Match to their definitions terms associated with pressure.

Transcription

1 Match to their definitions terms associated with pressure. 1. Pressure exerted by the atmosphere at sea level 2. Gauge reading 3. The PSI above a perfect vacuum, absolute zero 4. Any pressure less than atmospheric pressure 5. Absolute zero pressure 6. gauge readings of less than 0 PSI or KPA 7. The height of a water supply above the discharge orifice 8. The result of dividing the number of feet that the water supply is above the discharge orifice by Stored potential energy available to force water through pipes, fittings, fire hose, and adapters 10. At rest or without motion 11. That pressure found in a water distribution system during normal consumption demands 12. That part of the total available pressure not used to overcome friction lost or gravity while forcing water through pipes, fittings, fire hose, and adapters 13. A remainder or that which is left 14. That forward velocity pressure at a discharge opening while water is flowing 15. The center line of the pump or the bottom of a static water supply source above or below ground level 16. The position of an object above or below sea level 17. What happens when a nozzle is above the pump 18. What happens when a nozzle is below the pump 19. Another term for both pressure lost and pressure gain 20. That part of the total pressure loss while forcing water through pipes, fittings, fire hose, and adapters Answers on next page

2 A. Altitude B. Atmospheric pressure C. Elevation D. Elevation pressure E. Friction loss F. Flow pressure G. Head H. Head pressure I. Negative-pressure J. Normal operating pressure K. Perfect vacuum L. Pressure gain M. Pressure loss N. Psia O. Psig P. Residual Q. Residual pressure R. Static S. Static pressure T. Vacuum

3 1. Water is a compound of hydrogen and oxygen formed when: a. One hydrogen atom combines with one oxygen atom b. Two hydrogen atoms combined with one oxygen atom c. Two oxygen atoms combined with one hydrogen atom d. Two hydrogen atoms combined with two oxygen atom 2. Water exists in a liquid state between: a. 0 and 100 Fahrenheit b. 16 and 110 Fahrenheit c. 20 and 200 Fahrenheit d. 32 and 212 Fahrenheit 3. For fire detection purposes, ordinary fresh water is generally considered to weigh: a pounds/gallons b pounds/gallons c pounds/gallons d pounds/gallons 4. Water has the ability to extinguish fire in all of the following ways except: a. Cooling b. Smothering c. Absorbing heat from the fire d. Excluding carbon monoxide 5. As an extinguishing agent, water depends on all of the following except: a. Specific heat b. Specific gravity c. Specific pressure d. Latent heat of vaporization 6. What is the specific heat? a. A measure of the heat-absorbing capacity of a substance b. They heat required to raise the temperature of 1 pound of water 1 F c. The specific point at which a substance to absorb some of the two combust d. The quantity of heat absorbed by a substance when it changes from a liquid to a vapor

4 7. What unit is used to measure of amounts of heat transfer? a. Calorie b. Kilopascal (kpa) c. British thermal unit, BTU d. Degrees Fahrenheit or Celsius 8. What is a BTU? a. A measure of the heat-absorbing capacity of a substance b. They heat required to raise the temperature of 1 pound of water 1 F c. The specific point at which a substance absorbs of the FFI two combust d. The quantity of heat absorbed by a substance when it changes from a liquid to a vapor 9. The latent heat of vaporization is: a. A measurement of the heat-absorbing capacity of a substance b. The heat required to raise the temperature of 1 pound of water 1 F c. The specific point at which a substance absorbs enough heat to combust d. The quantity of heat absorbed by a substance when it changes from a liquid to a vapor 10. Vaporize Asia and does not completely occur at boiling point. Each pound of water required approximately BTU of additional and heat two completely convert into steam. a. 790 BTU b. 934 BTU c. 970 BTU d BTU 11. The speed with which water absorbs heat increases in proportion to: a. The temperature of the water b. The amount of steam expansion c. The temperature of the fire area d. The water surface exposed to the heat

5 12. At 212 F, water expands approximately its original volume. a times b times c times d times 13. Steam expansion is inside a burning building. a. Rapid b. Gradual c. Nonexistent d. Unnecessary 14. What is viscosity? a. A measurement of the heat-absorbing capacity of a substance b. The heat required to raise the temperature of 1 pound of water 1 F c. The specific point at which a substance absorbs enough heat to combust d. The tendency of a liquid to possess internal resistance to flow 15. What is specific gravity? a. Static pressure b. Atmospheric pressure c. The density of liquids in relation to water d. The viscosity of water in relation to solids 16. What kinds of liquids are lighter than water and air therefore float on water? a. Those with a specific gravity less than 1 b. Those with a specific gravity greater than 1 c. Those with a specific gravity less than 10 d. Those with a specific gravity greater than What kinds of liquids are heavier than water and sink to the bottom? a. And those with a specific gravity less than 1 b. Those with a specific gravity greater than 1 c. Those with a specific gravity less than 10 d. Those with a specific gravity greater than 10

6 18. Forces is defined as: a. Force per unit area b. A simple measurement of space c. Force exerted on one substance by another d. A measurement directly related to the force of gravity 19. Customary in order to understand how to determine force, it is necessary to know that the weight of 1 cubic foot of water is approximately: a pounds b pounds c pounds d pounds 20. Metric in order to understand how to determine force, it is necessary to know that the weight of 1 cubic decimeter of water is approximately: a kilograms b kilograms c. 1.0 kilograms d. 1.6 kilograms 21. Elevation is: a. The term used to describe both pressure lost and pressure gain b. The position of an object above or below sea level c. The center line of the pump or the bottom of a static water supply source above or below ground level d. The part of the total pressure loss while forcing water through pipes, fittings, fire hose, and adapters 22. When a nozzle is above the pump, there is a: a. Gravity loss b. Pressure loss c. Pressure gain d. Elevation pressure 23. Friction loss is: a. Pressure loss due to friction b. The term used to describe both pressure loss and pressure gain c. The position of an object above or below sea level d. The center line of the pump or the bottom of a static water supply source above or below ground level

7 24. Which of the following is NOT a cause of friction loss? a. Couplings b. Sharp bends c. Improper valve size d. Change in hose size or orifice by adapters 25. Flow pressure will always be near the supply source and at the fathers point in the system. a. Greatest/lowest b. Lowest/greatest c. Hardest/softest d. Softest/hardest 26. If viscosity is increased beyond practical limits, the friction becomes so great that the resistance agitates the entire strain, creating: a. Critical velocity b. Terminal velocity c. Critical friction loss d. Terminal friction loss 27. Which of the following characteristics of hose layouts does NOT affect friction loss? a. Hose length b. Hose diameter c. Kinks in the hose d. Sexless couplings on the hose 28. What is water hammer? a. The pressure found in a water distribution system during normal consumption demands b. The part of the total pressure loss when water is forced through pipes, fittings, fire hose, and adapters c. The decrease of the amount of water flowing through a hose, reducing the speed of the water and therefore causing less friction loss d. The sudden stopping of water moving through a hose or pipe resulting in an energy surge being transmitted in the opposite direction, often at many times the original pressure

8 29. Close nozzles, hydrants, valves, and hose clamps two prevent water hammer. a. Quickly b. Slowly c. Carefully d. Completely 30. Which of the following is NOT one of the four components of a municipal water Supply System? a. Source of water supply b. Means of moving water c. Wastewater treatment plant d. Water distribution system 31. Where can the primary water supply be obtained? a. Water processing facility b. Water treatment facility c. Water distribution system d. Surface water or groundwater 32. Which of the following is NOT a means of moving water? a. Gravity system b. Treatment system c. Combination system d. Direct pumping system 33. Which means of moving water uses one or more pumps that take water from the primary source and discharge it through the filtration and treatment processes? a. Gravity system b. Distribution system c. Combination system d. Direct pumping system 34. Which means of moving water uses a primary water source located at a higher elevation than the distribution system? a. Gravity system b. Distribution system c. Combination system d. Direct pumping system

9 35. What is the fire department s main concern regarding treatment facilities? a. That the process of treating water made lead to less available water volume and pressure b. That treatment facilities may not supply enough water to adequately fight large-scale fires c. That a maintenance error, natural disaster, loss of Power Supply, or fire could disabled the pumping stations d. That contaminants may not be completely removed, causing undue corrosion of hose and couplings 36. From where does the water supply distribution system receives water? a. From the pumping station b. From the water treatment facility c. From a network of distribution pipes d. From a ground or surface water source 37. A fire hydrant that receives water from only one direction is known as they: a. One way heading b. One way hydrant c. Deadhead hydrant d. Date end hydrant 38. A distribution system that provides circulating feed from several mains constitutes a: a. Grid system b. Waffle pattern c. Gridiron system d. Crosshatch system 39. are large pipes (mains) with relatively widespread spacing that convey large quantities of water to various points of the system for local distribution to the smaller mains. a. Distributors b. Contributors c. Primary feeders d. Secondary feeder 40. make up a network of intermediate-sized pipes that reinforce the grid within the various loops of the primary feeder system and aid the concentration of the required fire flow at any point. a. Distributors b. Contributors c. Primary feeders d. Secondary feeders

10 41. make up the grid arrangement of smaller mains serving individual fire hydrants and blocks of consumers. a. Distributors b. Contributors c. Primary feeders d. Secondary feeders 42. What is the function of a valve in a water distribution system? a. Two provide a means for controlling the flow of water through the distribution piping b. To receive water from the pumping station and deliver it throughout that area served c. To take water from the primary source and discharge it through the filtration and treatment processes d. Two convey large quantities of water to various points of the system for mobile distribution to the smaller mains 43. Valve spacing should be such that: a. There is at least 12 feet between valves b. Valves are located at infrequent intervals c. Large amounts of pipes are connected by one valve d. Only a minimum length of pipe is out of service at one time 44. Which type of valve shows whether the gate or valve seat is open, closed, or partially closed? a. Control valve b. Indicating valve c. Check valve d. Nonindicating valve 45. Which type of valve is a hollow metal post that is attached to the valve housing? a. Control valve b. Butterfly valve c. Post indicator valves d. Nonindicating valve 46. Which type of valve has a yoke on the outside with a threaded stem that controls the gates opening or closing? a. Control valve b. Butterfly valve c. Post indicating valve d. Outside screw and yoke

11 47. Which types of valves are the most common types of valves used on most public water distribution systems? a. Control valves b. Butterfly valves c. Post indicator valves d. Nonindicating valves 48. Friction loss in water pipes can be reduced by: a. Using only steel pipes b. Operating valves periodically c. Flushing hydrant periodically d. Keeping valves partially open during use 49. Which of the following is the average of the total amount of water used in a water distribution system over the period of one year a. Peak hourly consumption b. Average daily consumption c. Minimum daily consumption d. Maximum daily consumption 50. Which of the following statements about private water Supply Systems is FALSE? a. Prided water Supply Systems are most often found in residential developments b. The design of private water Supply Systems is typically similar to that of municipal systems c. Private water Supply Systems may service one large building or a series of buildings on the complex d. Most private water supply system s maintain separate piping for fire protection and domestic/industrial services

12 Answers Matching 1. B ( ) 11. J ( ) 2. O (144) 12. Q (146) 3. N (144) 13. P (146) 4. T (144) 14. F (146) 5. K (144) 15. C (146) 6. I (144) 16. A (146) 7. G (144) 17. M (146) 8. H (144) 18. L (146) 9. S (144) 19. D (144) 10. R (144) 20. E (147) Multiple Choice 1. B (135) 16. A (139) 31. D (152) 46. D ( ) 2. D (135) 17. B (139) 32. B (152) 47. D ( ) 3. C (136) 18. D (140) 33. D ( ) 48. C (159) 4. D (136) 19. C (141) 34. A ( ) 49. B ( ) 5. C (136) 20. C (146) 35. C (155) 50. A (160) 6. A (136) 21. B (146) 36. A (156) 7. C (136) 22. B (146) 37. D (156) 8. B (136) 23. A (147) 38. A (156) 9. D (137) 24. C (147) 39. C ( ) 10. C (137) 25. A (148) 40. D ( ) 11. D (137) 26. A (150) 41. A ( ) 12. C (138) 27. D (150) 42. A (157) 13. A (139) 28. D (151) 43. D (157) 14. D (139) 29. B (151) 44. B ( ) 15. C (139) 30. C (152) 45. C ( )