Water Operator Study Material 200 PDF

48. A water tank that uses compressed air over water to provide pressure is called a - a. Sand pressure filter b. Bladder tank c. Boiler d. Hydro pneumatic tank e. Health hazard and should be removed 49. According to the lead and copper rule, pipe and f...

48. A water tank that uses compressed air over water to provide pressure is called a - a. Sand pressure filter b. Bladder tank c. Boiler d. Hydro pneumatic tank e. Health hazard and should be removed 49. According to the lead and copper rule, pipe and fittings may not contain more than __ lead or solder and flux may not contain more than 0.2 % lead. a. 0.8% b. 0.25 % C. 2.0 % d. 20 % e. None of the above 50. When testing for chlorine residual DPD is used as an indicator, when DPD is added to water containing chlorine what color does the sample turn? a. Blue b. Red c. Green d. Yellow e. There should be no change in color 51. The most common valve(s) used for isolating a water leak is the ----- valve. a. Ball valve b. Butterfly valve c. Check valve d. Gate valve e. Pressure reducing valve 52. In the distribution system when a valve or hydrant is opened or closed too fast it could result in a - a. Pressure drop b. Water hammer c. Cross connection d. Contamination e. No change - this task is routinely preformed 53. The most commonly used pump in the distribution system is - a. Centrifugal b. Positive displacement c. Roller pump d. Submersible e. Hollow shaft turbine Test Questions Made Possible By TWUA Answer Key Available For TWUA Members- Contact [email protected]  Water Answer Key 1. E 31.E 61.C 91.E 121.D 151.E 181.E 2. B 32.D 62.A 92.A 122.A 152.C 182.E 3. D 33.D 63.A 93.E 123.D 153.E 183.A 4. A 34.C 64.E 94.C 124.C 154.B 184.B s. E 35.C 65.A 95.D 125.D 155.E 185.C 6. D 36.E 66.A 96.A 126.D 156.B 186.D 7. E 37.C 67.C 97.C 127.D 157.D 187.B 8. B 38.B 68.A 98.B 128.B 158.B 188.A 9. A 39.D 69.E 99.C 129.C 159.A 189.A 10.E 40.C 70.D 100.D 130.D 160.B 190.C 11.A 41.E 71.C 101.C 131.A 161.C 191.C 12.C 42.D 72.B 102.B 132.C 162.C 192.B 13.D 43.E 73.A 103.D 133.B 163.D 193.A 14.A 44.B 74.B 104.D 134.C 164.B 194.C 15.A 45.B 75.C 105.B 135.A 165.A 195.C 16.C 46.D 76.D 106.B 136.A 166.E 196.E 17.A 47.D 77.D 107.D 137.E 167.A 197.A 18.C 48.D 78.E 108.C 138.C 168.D 198.E 19.D 49.B 79.E 109.E 139.E 169.C 199.E 20.B 50.B 80.C 110.D 140.D 170.B 200.B 21.E 51.D 81.B 111.E 141.C 171.C 22.D 52.B 82.A 112.B 142.D 172.E 23.A 53.A 83.C 113.D 143.B 173.B 24.D 54.D 84.D 114.A 144.C 174.C 25.B 55.A 85.A 115.D 145.E 175.D 26.C 56.B 86.D 116.D 146.B 176.E 27.A 57.C 87.B 117.D 147.B 177.B 28.C 58.C 88.C 118.B 148.C 178.B 29.E 59.E 89.D 119.B 149.D 179.C 30.E 60.D 90.A 120.C 150.A 180.E