EXA - High Sierra Pool
A filter out backwash cycle for a sand clear out is complete when:
A) The system has run mins
B) No similarly water flows through the gadget
C) The strain within the clear out tank rises to 50 psi
D) The backwash water appears clean inside the sight glass - ANS-The backwash water
seems clean within the sight glass
A pool need to be unfastened from:
A) Floating debris
B) Sediment and dust
C) Algae
D) All of the above - ANS-All of the above
A sequestering agent may be used in a pool to:
A) Prevent precipitation of minerals on pool surface
B) Prevent algae increase
C) Stabilize chlorine
D) Provide a tint of blue to the water - ANS-Prevent precipitation of minerals on pool floor
A skimmer weir:
A) Prevents floating debris from re-getting into the pool
B) Provides seventy five percentage of the pool's recirculation
C) Directs floating debris closer to the principle drain
D) All of the above - ANS-Prevents floating particles from re-entering the pool
According to current information from the CDC, about how many water - associated
accidents are yearly associated with swimming sports:
A) 500
B) 7000
C) one hundred forty 000
D) 1 000 000 - ANS-a hundred and forty 000
Adding liquid chlorine to pool water has the subsequent impact on PH:
A) Will decrease the ph
B) Will raise the ph
C) Has no impact on ph
D) Depends on outdoor air temperature - ANS-Will boost the pH
Alkalinity of swimming pool water is recommended to be maintained:
A) 20 - 50 elements according to million
B) eighty - one hundred forty parts in line with million
, C) 200 - 500 components per million
D) Greater than 500 parts in line with million - ANS-80 - 140 elements consistent with million
An suited degree of free chlorine in the swimming pool water is:
A) 1 to three elements consistent with million (ppm)
B) five to twenty components in keeping with million (ppm)
C) 2 to 15 elements per million (ppm)
D) 2 to twenty components in step with million (ppm) - ANS-2 to 20 components according to
million (ppm)
An resource in eliminating small particles from the pool water is:
A) Sodium chloride
B) A flocculent
C) Glucose
D) Urea - ANS-Flocculent
An increased studying from the vacuum gauge of a high rate sand filter out may additionally
imply:
A) The hair/lint strainer needs to be cleaned
B) The filter out needs to be backwashed
C) The pool inlets want to be adjusted
D) Air has gathered within the clear out - ANS-The filter desires to be backwashed
As dirt accumulates inner a filter out the quantity of water that could bypass through the filter
out:
A) Increases
B) Decreases
C) Remains the equal
D) None of the above - ANS-Decreases
Bromine is sometime used as a disinfectant because:
A) It increases PH
B) Combined bromine remains an effective sanitizer/ It is more solid at better temperatures
than chlorine
C) Is cheaper
D) All of the above - ANS-Combined bromine continues to be an powerful sanitizer/ It is
more solid at higher temperatures than chlorine
Chloramines are:
A) Weak disinfectants
B) A mixture of chlorine and ammonia in pool water
C) Irritating to the body
D) All of the above - ANS-A combination of chlorine and ammonia in pool water
Chlorine may be used wherein of the following paperwork?
A) Gas
B) Liquid
C) Powder