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20 Cards in this Set
- Front
- Back
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What agency establishes drinking water standards in the United States? |
USEPA (United States Environmental Protection Agency) |
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What type of motor is used when infrequent starting is required and a load needs to be brought up to speed quickly? |
Capacitor-start |
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What is schmutzdecke? |
Fine sand and a sticky mat of suspended matter that forms on the surface of a sand filter |
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Autoclaving will sterilize |
Wish team at 121°C and 15 psi |
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They contamination in drinking water will cause children to have |
Altered mental and physical development |
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Which of the following fluoride, compounds usually comes in solution form? |
Fluorosilicic acid |
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Check valves are used to prevent |
water from flowing in two directions |
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Of the following valves, which is the most suitable for a throttling application? |
Pressure reducing |
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Which of the following causes are binding? |
Release of dissolved gases and saturated cold water when pressure decreases in filter beds |
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What type of concrete reservoir is constructed much like a swimming pool and is rather shallow and difficult to cover? |
Hydraulically applied concrete-lined |
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In coliform analysis using the presence absence test, a sample should be incubated for |
24 and 48 hour at 35°C |
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If ammonia vapor is passed over a chlorine leak in a cylinder valve, the presence of delete is indicated by a |
white cloud |
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Non Flexible service line |
Galvanized iron |
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If a water body has a high salinity and is warm, it will generally be |
low in dissolved oxygen |
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What effect will algae in a reservoir have on dissolved oxygen(DO)? |
Increase DO during the day and lower DO during the night. |
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The most common type of whale used for public water systems is a |
drilled well |
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What is the formula for determining watts? |
WATTS = (amps)(volts) |
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A 1-ton cylinder filled with chlorine weighs approximately |
3700 lb |
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A fire hydrant should have______ installed between it and the main |
an auxiliary valve |
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What type of meter determines the total Flow by multiplying the flow through the meter by a factor? |
Proportional |
