Florida C Water Operator Practice Test 600
Questions 2026 | Questions & Answers PDF
What is an Ampere? - correct Answersa unit of measurement for current
Which of the following is a type of pump that is commonly used in a water treatment
plant? - correct AnswersCentrifugal
What is a multi-staged pump? - correct Answershas more than one impeller
if the pump impeller is running backwards, what action must be taken to correct the
rotation? - correct Answersswitch any two electrical leads
When should the packing of a pump be adjusted? - correct Answerswhen the pump is
running
when a pump fails to deliver at its rated capacity, what is most likely the cause? -
correct Answersair leak
what is a common cause for vibrations in a motor? - correct Answersmisalignment of
the couplings
What is the purpose of the wear rings in a pump? - correct AnswersPlug internal
leakage
what should the seal water pressure be for a pump? - correct Answers5 psi higher than
the pumps discharge pressure
what is the purpose of the seal water? - correct Answersblock out air intake and
lubricate the packing
what is the recommended maximum suction lift? - correct Answers15 ft.
In a water treatment plant, what type of pump is commonly used to deliver chemical
solutions? - correct AnswersPositive displacement
when should you lubricate your equipment? - correct Answersfollow the manufacturer's
recommendations
In what manner is packing installed? - correct Answersa strip at a time and staggered
,a positive displacement pump should never be operated________? - correct
Answersagainst a closed discharge valve
if two of more pumps of the same size and purpose are online, what method of
operation is recommended for them? - correct Answersalternate to equalize wear
If half of the mechanical seal fails, what corrective action should be taken? - correct
Answerschange both halves of the seal
what is the purpose of a lantern ring? - correct Answerswater seal
The packing of a pump should be adjusted to _________? - correct Answersallow a
slight operating leakage and allow approximately a drip per second.
On a multiple drive motor, when a belt fails, what corrective action should be taken? -
correct AnswersReplace all the belts on the drive
To keep a centrifugal pump primed, install a _______ valve at the end of the suction
line. - correct Answersfoot valve
If a motor fails to start, what should be checked first? - correct AnswersPower supply
Opening or closing a valve rapidly will cause? - correct Answerswater hammer
The formation and collapse of a gas pocket or bubble on the blade of an impeller is
called? - correct Answerscavitaion
Changing the packing on a pump is called ________ maintenance - correct
Answerscorrective
what is an example of a daily maintenance task for a compressor? - correct
Answersdrain the air receiver
what type of valve is usually used to control the rate of flow? - correct Answersglobe
valve
what type of valve is buried? - correct Answersnon-rising stem
what is the most common valve type used in a water treatment plant? - correct
Answersgate valve
what will happen if the gate valve is left half open to control flow? - correct
AnswersUndue seat wear
In what manner should carbon be stored? - correct Answerson concrete floor in single
rows
,what is brinelling? - correct Answersa type of bearing wear
what is the recommended manner for storing potassium permanganate? - correct
Answerson a concrete floor away from heat or heated pipes
what causes more damage to a pump's impeller? - correct AnswersAir
What is the unit of electrical resistance? - correct AnswersOhm
What is an ammeter - correct Answersmeasures amps and current
what type of electrical service is usually found in water plants? - correct Answersthree
phase
Generally, all motors over over two HP require what type of electrical service? - correct
Answers3 phase
Before starting work on any electrical equipment, you must first ____? - correct
AnswersLock out tag out
What unit is used to measure the rate of power Consumption? - correct
AnswersKilowatts
What is the function of a shear pin? - correct Answersto prevent damage to equipment
when there is an overload
The measurement of how close an instrument determines the true of actual reading of
an instrument is called? - correct AnswersAccuracy
The readout of an instrument by the use of a pointer against a scale is an _____
reading? - correct Answersanalog
The device that controls the operation of equipment is called? - correct
Answerscontroller
The readout of an instrument by a direct numerical reading of the measured value id
called a ________ reading? - correct Answersdigital
what is an instrument's ability to measure a process value and repeatedly obtain the
result called? - correct Answersprecision
what is the difference between the actual value and desired value? - correct
Answersdrift
what is software? - correct Answerscomputer programs
, A device that measures the accumulative amount of a process over a 24 hour period is
called? - correct AnswersTotalizer
What is the Williams-Steiger Federal law known as today? - correct AnswersOSHA
Who is responsible for your safety in the workplace? - correct Answersyourself
your should never add _____ to acid because it will cause a violent reaction. - correct
Answerswater
what two chemicals widely used in water treatment will cause an explosion when
mixed? - correct Answerslime and alum (base and acid)
what is usually the first indication of a carbon fire? - correct Answersheat
what type of fire extinguisher is used for a carbon fire - correct Answerscarbon dioxide
what percentage of oxygen is there in air? - correct Answers20.9%
Broken laboratory glassware should be ____ to avoid injuries. - correct Answersflame
polished
recommended fluoride control limits are based on which of the following? - correct
Answersannual average maximum daily temperatures
how many pounds of CL2 can you withdraw from a 150 lb cylinder in a day? - correct
Answers40
how many pounds of CL2 can you withdraw from a one ton cylinder in a day? - correct
Answers400
chlorine is ____ times heavier than air? - correct Answers2.5
One liter of liquid chlorine will expand to ______ liters of chlorine gas. - correct
Answers450
The chlorine dosage minus the chlorine residual id the formula for the _____. - correct
AnswersDemand
NaOC1 is the chemical formula for ______? - correct AnswersSodium Hypochlorite
HOC1 is the chemical formula for _____? - correct AnswersHypochlorous Acid
OC1 is the chemical formula for ______? - correct AnswersHypochlorite
Questions 2026 | Questions & Answers PDF
What is an Ampere? - correct Answersa unit of measurement for current
Which of the following is a type of pump that is commonly used in a water treatment
plant? - correct AnswersCentrifugal
What is a multi-staged pump? - correct Answershas more than one impeller
if the pump impeller is running backwards, what action must be taken to correct the
rotation? - correct Answersswitch any two electrical leads
When should the packing of a pump be adjusted? - correct Answerswhen the pump is
running
when a pump fails to deliver at its rated capacity, what is most likely the cause? -
correct Answersair leak
what is a common cause for vibrations in a motor? - correct Answersmisalignment of
the couplings
What is the purpose of the wear rings in a pump? - correct AnswersPlug internal
leakage
what should the seal water pressure be for a pump? - correct Answers5 psi higher than
the pumps discharge pressure
what is the purpose of the seal water? - correct Answersblock out air intake and
lubricate the packing
what is the recommended maximum suction lift? - correct Answers15 ft.
In a water treatment plant, what type of pump is commonly used to deliver chemical
solutions? - correct AnswersPositive displacement
when should you lubricate your equipment? - correct Answersfollow the manufacturer's
recommendations
In what manner is packing installed? - correct Answersa strip at a time and staggered
,a positive displacement pump should never be operated________? - correct
Answersagainst a closed discharge valve
if two of more pumps of the same size and purpose are online, what method of
operation is recommended for them? - correct Answersalternate to equalize wear
If half of the mechanical seal fails, what corrective action should be taken? - correct
Answerschange both halves of the seal
what is the purpose of a lantern ring? - correct Answerswater seal
The packing of a pump should be adjusted to _________? - correct Answersallow a
slight operating leakage and allow approximately a drip per second.
On a multiple drive motor, when a belt fails, what corrective action should be taken? -
correct AnswersReplace all the belts on the drive
To keep a centrifugal pump primed, install a _______ valve at the end of the suction
line. - correct Answersfoot valve
If a motor fails to start, what should be checked first? - correct AnswersPower supply
Opening or closing a valve rapidly will cause? - correct Answerswater hammer
The formation and collapse of a gas pocket or bubble on the blade of an impeller is
called? - correct Answerscavitaion
Changing the packing on a pump is called ________ maintenance - correct
Answerscorrective
what is an example of a daily maintenance task for a compressor? - correct
Answersdrain the air receiver
what type of valve is usually used to control the rate of flow? - correct Answersglobe
valve
what type of valve is buried? - correct Answersnon-rising stem
what is the most common valve type used in a water treatment plant? - correct
Answersgate valve
what will happen if the gate valve is left half open to control flow? - correct
AnswersUndue seat wear
In what manner should carbon be stored? - correct Answerson concrete floor in single
rows
,what is brinelling? - correct Answersa type of bearing wear
what is the recommended manner for storing potassium permanganate? - correct
Answerson a concrete floor away from heat or heated pipes
what causes more damage to a pump's impeller? - correct AnswersAir
What is the unit of electrical resistance? - correct AnswersOhm
What is an ammeter - correct Answersmeasures amps and current
what type of electrical service is usually found in water plants? - correct Answersthree
phase
Generally, all motors over over two HP require what type of electrical service? - correct
Answers3 phase
Before starting work on any electrical equipment, you must first ____? - correct
AnswersLock out tag out
What unit is used to measure the rate of power Consumption? - correct
AnswersKilowatts
What is the function of a shear pin? - correct Answersto prevent damage to equipment
when there is an overload
The measurement of how close an instrument determines the true of actual reading of
an instrument is called? - correct AnswersAccuracy
The readout of an instrument by the use of a pointer against a scale is an _____
reading? - correct Answersanalog
The device that controls the operation of equipment is called? - correct
Answerscontroller
The readout of an instrument by a direct numerical reading of the measured value id
called a ________ reading? - correct Answersdigital
what is an instrument's ability to measure a process value and repeatedly obtain the
result called? - correct Answersprecision
what is the difference between the actual value and desired value? - correct
Answersdrift
what is software? - correct Answerscomputer programs
, A device that measures the accumulative amount of a process over a 24 hour period is
called? - correct AnswersTotalizer
What is the Williams-Steiger Federal law known as today? - correct AnswersOSHA
Who is responsible for your safety in the workplace? - correct Answersyourself
your should never add _____ to acid because it will cause a violent reaction. - correct
Answerswater
what two chemicals widely used in water treatment will cause an explosion when
mixed? - correct Answerslime and alum (base and acid)
what is usually the first indication of a carbon fire? - correct Answersheat
what type of fire extinguisher is used for a carbon fire - correct Answerscarbon dioxide
what percentage of oxygen is there in air? - correct Answers20.9%
Broken laboratory glassware should be ____ to avoid injuries. - correct Answersflame
polished
recommended fluoride control limits are based on which of the following? - correct
Answersannual average maximum daily temperatures
how many pounds of CL2 can you withdraw from a 150 lb cylinder in a day? - correct
Answers40
how many pounds of CL2 can you withdraw from a one ton cylinder in a day? - correct
Answers400
chlorine is ____ times heavier than air? - correct Answers2.5
One liter of liquid chlorine will expand to ______ liters of chlorine gas. - correct
Answers450
The chlorine dosage minus the chlorine residual id the formula for the _____. - correct
AnswersDemand
NaOC1 is the chemical formula for ______? - correct AnswersSodium Hypochlorite
HOC1 is the chemical formula for _____? - correct AnswersHypochlorous Acid
OC1 is the chemical formula for ______? - correct AnswersHypochlorite
