What determines the amount of hydrogen sulfide produced in a sewer?
A. BOD concentration
B. DO concentration
C. pH
D. SS concentration
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C. pH
Which one of the following items does not need to be monitored during operation of
an internal combustion engine>
A. Air temperature
B. Oil pressure
,C. Oil temperature
D. Water temperature
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A. Air temperature
When repairing a pipeline, the depth of the pipeline can be roughly determined by
A. Digging with a pick and shovel and checking every 12 inches
B. Having an extra person watch the digging to immediately spot the main
C. Opening a manhole and observing the depth to the top of the pipe
D. Using a level
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C. Opening a manhole and observing the depth to the top of the pipe
If a gasoline engine has a starting problem, the most likely cause of the problem is
A. Dirt in the fuel lines
B. Loose connecting rod bearing
C. Low crankcase oil
D. Sticking inlet valves
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A. Dirt in the fuel lines
Which of the following has the greatest effect on the amount of oxygen dissolved in
water?
,A. Chlorine residual
B. Suspended solids
C. temperature
D. volatile acids
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C. Temperature
Solids that settle out in the bottom of a wet well are called
A. scum
B. Colloidal solids
C. suspended solids
D. Settleable solids
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D. Settleable solids
Which of the following is an indicator normally used for determination of water
pollution?
A. Fungi
B. Stapylococcus
C. Algae
D. Coliforms
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D. Coliforms
, A centrifugal pump should not be run empty, except momentarily because
A. A serious counter pressure would be built up by excessive vacuum
B. It is useless to run a pump without getting water
C. The excessive end thrust of the shaft would damage the thrust bearing
D. The parts lubricated by water could be damaged
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D. The parts lubricated by water could be damaged
When filling the water tank on a high velocity cleaner from a fire hydrant, you should
A. Be certain the fill hose extends well into the tank
B. Be sure there is an air gap between the fill hose and the water level
C. Only fill the tank 75% full
D. Open the fire hydrant valve 50% so there will be pressure in the main to fight fire
Give this one a try later!
B. Be sure there is an air gap between the fill hose and the water level
Which part of a pipe is the most vulnerable to corrosion from septic wastewater in a
gravity system?
A. Bell
B. Crown
C. Flange bolts
D. Invert
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A. BOD concentration
B. DO concentration
C. pH
D. SS concentration
Give this one a try later!
C. pH
Which one of the following items does not need to be monitored during operation of
an internal combustion engine>
A. Air temperature
B. Oil pressure
,C. Oil temperature
D. Water temperature
Give this one a try later!
A. Air temperature
When repairing a pipeline, the depth of the pipeline can be roughly determined by
A. Digging with a pick and shovel and checking every 12 inches
B. Having an extra person watch the digging to immediately spot the main
C. Opening a manhole and observing the depth to the top of the pipe
D. Using a level
Give this one a try later!
C. Opening a manhole and observing the depth to the top of the pipe
If a gasoline engine has a starting problem, the most likely cause of the problem is
A. Dirt in the fuel lines
B. Loose connecting rod bearing
C. Low crankcase oil
D. Sticking inlet valves
Give this one a try later!
A. Dirt in the fuel lines
Which of the following has the greatest effect on the amount of oxygen dissolved in
water?
,A. Chlorine residual
B. Suspended solids
C. temperature
D. volatile acids
Give this one a try later!
C. Temperature
Solids that settle out in the bottom of a wet well are called
A. scum
B. Colloidal solids
C. suspended solids
D. Settleable solids
Give this one a try later!
D. Settleable solids
Which of the following is an indicator normally used for determination of water
pollution?
A. Fungi
B. Stapylococcus
C. Algae
D. Coliforms
Give this one a try later!
D. Coliforms
, A centrifugal pump should not be run empty, except momentarily because
A. A serious counter pressure would be built up by excessive vacuum
B. It is useless to run a pump without getting water
C. The excessive end thrust of the shaft would damage the thrust bearing
D. The parts lubricated by water could be damaged
Give this one a try later!
D. The parts lubricated by water could be damaged
When filling the water tank on a high velocity cleaner from a fire hydrant, you should
A. Be certain the fill hose extends well into the tank
B. Be sure there is an air gap between the fill hose and the water level
C. Only fill the tank 75% full
D. Open the fire hydrant valve 50% so there will be pressure in the main to fight fire
Give this one a try later!
B. Be sure there is an air gap between the fill hose and the water level
Which part of a pipe is the most vulnerable to corrosion from septic wastewater in a
gravity system?
A. Bell
B. Crown
C. Flange bolts
D. Invert
Give this one a try later!
