Matching questions
1-42 of 42
Click a definition to match it with a term
Under which conditions are thrust blocks used to anchor pipes and fittings to keep
them from moving or being pulled apart?
1. Change in demand for corrosion control
2. Change in water quality
3. Change in direction of the pipe
4. Sudden stoppage of flow
5. Sudden increase in velocity
Give this one a try later!
3. Change in direction of the pipe
4. Sudden stoppage of flow
5. Sudden increase in velocity
Why should excessive water velocities be avoided when filling pipes for pressure and
leakage tests?
1. To prevent erosion corrosion of the pipes
,2.to prevent cavitation on futons and valves due to flowing water
3.to prevent pipe movements, which could cause leaks
4. To prevent damage from water hammer
Give this one a try later!
3. To prevent pipe movements which could cause leaks
Why should a check valve be provided on the discharge side of each pump?
1. To divert flows to storage facilities
2.to check flows for compliance with quality standards
3. To prevent backflow
4. To meter flows being pumped
Give this one a try later!
3. To prevent backflows
Which threats can be kept out of covered reservoirs by covering vents, drains, and
overflow outlets with a fine mesh screen?
1. Vandals
2. Birds
3. Small animals
4. Snakes
5. Insects
Give this one a try later!
, 2. Birds
3. Small animals
4. Snakes
5. Insects
What is the purpose of backflow prevention valves in the water distribution system?
1. To isolate the system for repairs
2. To provide backup for other system valves
3. To stop the flow of an unapproved and possibly contaminated supply into the
domestic water system
4. To prevent the loss of water through leaks
Give this one a try later!
3.To stop the flow of an unapproved and possibly contaminated supply into
the domestic water system
What are the limitations of compound water meters?
1. Not suited for locations with widely varying flows where accurate low flow
measurements is needed
2. Large and cumbersome
3. Expensive
4. Accuracy drops during the changeover from low to high and high to low flows
5. Loss of head from friction is higher than in high flow meters
Give this one a try later!
1-42 of 42
Click a definition to match it with a term
Under which conditions are thrust blocks used to anchor pipes and fittings to keep
them from moving or being pulled apart?
1. Change in demand for corrosion control
2. Change in water quality
3. Change in direction of the pipe
4. Sudden stoppage of flow
5. Sudden increase in velocity
Give this one a try later!
3. Change in direction of the pipe
4. Sudden stoppage of flow
5. Sudden increase in velocity
Why should excessive water velocities be avoided when filling pipes for pressure and
leakage tests?
1. To prevent erosion corrosion of the pipes
,2.to prevent cavitation on futons and valves due to flowing water
3.to prevent pipe movements, which could cause leaks
4. To prevent damage from water hammer
Give this one a try later!
3. To prevent pipe movements which could cause leaks
Why should a check valve be provided on the discharge side of each pump?
1. To divert flows to storage facilities
2.to check flows for compliance with quality standards
3. To prevent backflow
4. To meter flows being pumped
Give this one a try later!
3. To prevent backflows
Which threats can be kept out of covered reservoirs by covering vents, drains, and
overflow outlets with a fine mesh screen?
1. Vandals
2. Birds
3. Small animals
4. Snakes
5. Insects
Give this one a try later!
, 2. Birds
3. Small animals
4. Snakes
5. Insects
What is the purpose of backflow prevention valves in the water distribution system?
1. To isolate the system for repairs
2. To provide backup for other system valves
3. To stop the flow of an unapproved and possibly contaminated supply into the
domestic water system
4. To prevent the loss of water through leaks
Give this one a try later!
3.To stop the flow of an unapproved and possibly contaminated supply into
the domestic water system
What are the limitations of compound water meters?
1. Not suited for locations with widely varying flows where accurate low flow
measurements is needed
2. Large and cumbersome
3. Expensive
4. Accuracy drops during the changeover from low to high and high to low flows
5. Loss of head from friction is higher than in high flow meters
Give this one a try later!
