WATER DISTRIBUTION 1 PRACTICE QUESTIONS FROM
EXAM STUDY GUIDE TEST WITH LATEST UPDATED
(QUESTIONS AND ANSWERS) ALREADY PASSED!!
Head is measured in Correct Answers height (feet) or pressure
Which type of valve will prevent the collapse of a pipe Correct Answers
Air-and-vacuum relief valve
The highest degree of protection of a coated steel pipe is.... Correct
Answers cathodic protection
At which time of day is the age of the water stored in the distribution
system the highest/oldest? Correct Answers In the morning
One of chlorine advantages is that it Correct Answers has a persistent
residual
Chlorine gas is _____ times heavier than air. Correct Answers 2.5X
After a water storage tank has been chlorinated, which bacteriological
test must prove negative before the tank is put back into service. Correct
Answers Coliform test
~~~~~~Which is the best and most reliable way of finding a very small
chlorine leak? Correct Answers Use a chlorine gas detector and place it
near any area suspected of leaking.
, The minimum required free chlorine residual anywhere in the
distribution system is Correct Answers a detectable level
First draw samples for the analysis of lead and copper water must be
collected from taps where the water has stood motionless in the
plumbing for at least Correct Answers 6 hours
Samples collected for cloakrooms are collected in plastic bottles that
must contain Correct Answers Sodium thiosulfate
The volume of a sample for coliform compliance is Correct Answers
100 ml
If a water sample is not analyzed immediately for chlorine residual, it is
acceptable to be analyzed within Correct Answers 15 minutes
The heart of a pump is called the Correct Answers impeller
Which device serves the same function as the packing Correct Answers
Mechanical seal
Which is used to stop air leakage into the casing around the pump shaft
Correct Answers seals
EXAM STUDY GUIDE TEST WITH LATEST UPDATED
(QUESTIONS AND ANSWERS) ALREADY PASSED!!
Head is measured in Correct Answers height (feet) or pressure
Which type of valve will prevent the collapse of a pipe Correct Answers
Air-and-vacuum relief valve
The highest degree of protection of a coated steel pipe is.... Correct
Answers cathodic protection
At which time of day is the age of the water stored in the distribution
system the highest/oldest? Correct Answers In the morning
One of chlorine advantages is that it Correct Answers has a persistent
residual
Chlorine gas is _____ times heavier than air. Correct Answers 2.5X
After a water storage tank has been chlorinated, which bacteriological
test must prove negative before the tank is put back into service. Correct
Answers Coliform test
~~~~~~Which is the best and most reliable way of finding a very small
chlorine leak? Correct Answers Use a chlorine gas detector and place it
near any area suspected of leaking.
, The minimum required free chlorine residual anywhere in the
distribution system is Correct Answers a detectable level
First draw samples for the analysis of lead and copper water must be
collected from taps where the water has stood motionless in the
plumbing for at least Correct Answers 6 hours
Samples collected for cloakrooms are collected in plastic bottles that
must contain Correct Answers Sodium thiosulfate
The volume of a sample for coliform compliance is Correct Answers
100 ml
If a water sample is not analyzed immediately for chlorine residual, it is
acceptable to be analyzed within Correct Answers 15 minutes
The heart of a pump is called the Correct Answers impeller
Which device serves the same function as the packing Correct Answers
Mechanical seal
Which is used to stop air leakage into the casing around the pump shaft
Correct Answers seals
