WFSM - Set B (Volume 4) EXAM QUESTIONS AND
ANSWERS NEWEST!! 100% VERIFIED CORRECT
2025/2026
which color band designated reverse osmosis water purifica on water unit piping that carries
raw water
A.)yellow
B.) black
C.) green
D.) blue - Correct Answers B.) Black
which color band designates ROWPU piping that carries filtered water
A.) yellow
B.) black
C.) green
D.) blue - Correct Answers A.) Yellow
which color band on the ROWPU piping that carries product water
A.) yellow
B.)black
C.)green
D.) blue - Correct Answers D.) blue
how many gallons per hour does the 1500 ROWPU produce?
A.) 600
B.) 1000
,C.) 1250
D.) 1500 - Correct Answers D.) 1500
how many hours per day is the ROWPU designed to operate?
A.) 24
B.) 20
C.) 12
D.) 8 - Correct Answers B.) 20
what is a.ached to the suc on hose connected to the raw water pump that prevents the intake
of damaging objects
A.) float
B.) strainer
C.) gate valve
D.) distribu on pump - Correct Answers B.) strainer
what is an electrically driven centrifugal pump used to pump water from the product water
tanks to end the user?
A.) RO pump
B.) chemical feed pump
C.) distribu on pump
D.) raw water pump - Correct Answers C.) distribu on pump
What is another term used to refer to the backwash water tank?
A.) raw water tank
B.) product tank
C.) filtered tank
, D.) brine tank - Correct Answers D.) brine tank
how many gallons of water does the backwash water tank hold?
A.) 20000
B.) 15000
C.) 10000
D.) 5000 - Correct Answers A.) 20000
how man RO elements are in each ROWPU RO vessel
A.) 1
B.) 2
C.) 3
D.) 4 - Correct Answers B.) 2
what is the first stage of purifica on in the ROWPU process?
A.) bag filter
B.) back wash filter
C.) mul media filtra on
D.) Chemical disinfec on - Correct Answers C.) mul media filtra on
what is the 4th and final stage of treatment that completes the ROWPU water treatment
process?
A.) mul media filtra on
B.) chemical disinfec on
C.) bag filtra on
D.) desalina on - Correct Answers B.) chemical dissenfec on
ANSWERS NEWEST!! 100% VERIFIED CORRECT
2025/2026
which color band designated reverse osmosis water purifica on water unit piping that carries
raw water
A.)yellow
B.) black
C.) green
D.) blue - Correct Answers B.) Black
which color band designates ROWPU piping that carries filtered water
A.) yellow
B.) black
C.) green
D.) blue - Correct Answers A.) Yellow
which color band on the ROWPU piping that carries product water
A.) yellow
B.)black
C.)green
D.) blue - Correct Answers D.) blue
how many gallons per hour does the 1500 ROWPU produce?
A.) 600
B.) 1000
,C.) 1250
D.) 1500 - Correct Answers D.) 1500
how many hours per day is the ROWPU designed to operate?
A.) 24
B.) 20
C.) 12
D.) 8 - Correct Answers B.) 20
what is a.ached to the suc on hose connected to the raw water pump that prevents the intake
of damaging objects
A.) float
B.) strainer
C.) gate valve
D.) distribu on pump - Correct Answers B.) strainer
what is an electrically driven centrifugal pump used to pump water from the product water
tanks to end the user?
A.) RO pump
B.) chemical feed pump
C.) distribu on pump
D.) raw water pump - Correct Answers C.) distribu on pump
What is another term used to refer to the backwash water tank?
A.) raw water tank
B.) product tank
C.) filtered tank
, D.) brine tank - Correct Answers D.) brine tank
how many gallons of water does the backwash water tank hold?
A.) 20000
B.) 15000
C.) 10000
D.) 5000 - Correct Answers A.) 20000
how man RO elements are in each ROWPU RO vessel
A.) 1
B.) 2
C.) 3
D.) 4 - Correct Answers B.) 2
what is the first stage of purifica on in the ROWPU process?
A.) bag filter
B.) back wash filter
C.) mul media filtra on
D.) Chemical disinfec on - Correct Answers C.) mul media filtra on
what is the 4th and final stage of treatment that completes the ROWPU water treatment
process?
A.) mul media filtra on
B.) chemical disinfec on
C.) bag filtra on
D.) desalina on - Correct Answers B.) chemical dissenfec on
