Operator Test 10 Questions With
Accurate Answers
After 25 feet (7.5 m) of dependable lift, maximum suction capacity is so
challenged, and the loss is so great, that the resulting expected capacity is: correct
answer too low to be considered for drafting.
After priming the pump, opening the discharge valve too quickly may draw air
into the pump and: correct answer cause a loss of prime.
After the pump has been drained and the connections removed, operate the
positive displacement primer for several seconds until _____ comes out of the
discharge from the priming pump. correct answer primer oil or fluid
Artificial static water supply sources that resemble ponds or lakes may offer more
accessibility for fire apparatus than natural bodies of water because of their
strategic area are known as: correct answer ground reservoirs.
As the primer operates, the vacuum reading should _____ as atmospheric
pressure forces water into the intake hose. correct answer increase
Constant movement of water through the pump prevents: correct answer
overheating
During drafting operations, a hose with smaller diameter and greater length
creates _____ friction loss. correct answer higher
, Each time nonpotable water is pumped through the apparatus, the pump and
piping should be: correct answer flushed with fresh water as soon as possible.
Fire departments are encouraged to use _____ to ensure access at drafting sites.
correct answer preincident planning
Generally speaking, apparatus in good repair can draft water to a height of
approximately: correct answer 20 feet (6 m).
In general, the minimum amount of water around a barrel-type strainer is: correct
answer 2 feet (600 mm).
In most circumstances, maximum lift reaches about: correct answer 25 feet (7.5
m).
In order for a pumper to approach its rated capacity using a traditional strainer,
there must be at least _____ of water over the strainer. correct answer 24 inches
(600 mm)
Intake gauge readings below _____ indicates cavitation during drafting. correct
answer 20 in Hg (70 kPa)
Pumpers cannot be expected to draft water that sits _____ below the level of the
pump at sea level. correct answer 33.8 feet (10 m)
Some natural water sources provide _____, which allow a pumper to draft
without the complications of putting hard suction hoses directly into the source.
correct answer dry hydrants