"C" Water Operator - 600 Study
Questions and answers graded A+
a unit of measurement for current - correct answer ✔✔What is an Ampere?
Centrifugal - correct answer ✔✔Which of the following is a type of pump that is commonly
used in a water treatment plant?
has more than one impeller - correct answer ✔✔What is a multi-staged pump?
switch any two electrical leads - correct answer ✔✔if the pump impeller is running backwards,
what action must be taken to correct the rotation?
when the pump is running - correct answer ✔✔When should the packing of a pump be
adjusted?
air leak - correct answer ✔✔when a pump fails to deliver at its rated capacity, what is most
likely the cause?
misalignment of the couplings - correct answer ✔✔what is a common cause for vibrations in a
motor?
Plug internal leakage - correct answer ✔✔What is the purpose of the wear rings in a pump?
5 psi higher than the pumps discharge pressure - correct answer ✔✔what should the seal water
pressure be for a pump?
,block out air intake and lubricate the packing - correct answer ✔✔what is the purpose of the
seal water?
15 ft. - correct answer ✔✔what is the recommended maximum suction lift?
Positive displacement - correct answer ✔✔In a water treatment plant, what type of pump is
commonly used to deliver chemical solutions?
follow the manufacturer's recommendations - correct answer ✔✔when should you lubricate
your equipment?
a strip at a time and staggered - correct answer ✔✔In what manner is packing installed?
against a closed discharge valve - correct answer ✔✔a positive displacement pump should
never be operated________?
alternate to equalize wear - correct answer ✔✔if two of more pumps of the same size and
purpose are online, what method of operation is recommended for them?
change both halves of the seal - correct answer ✔✔If half of the mechanical seal fails, what
corrective action should be taken?
water seal - correct answer ✔✔what is the purpose of a lantern ring?
allow a slight operating leakage and allow approximately a drip per second. - correct answer
✔✔The packing of a pump should be adjusted to _________?
Replace all the belts on the drive - correct answer ✔✔On a multiple drive motor, when a belt
fails, what corrective action should be taken?
,foot valve - correct answer ✔✔To keep a centrifugal pump primed, install a _______ valve at
the end of the suction line.
Power supply - correct answer ✔✔If a motor fails to start, what should be checked first?
water hammer - correct answer ✔✔Opening or closing a valve rapidly will cause?
cavitaion - correct answer ✔✔The formation and collapse of a gas pocket or bubble on the
blade of an impeller is called?
corrective - correct answer ✔✔Changing the packing on a pump is called ________
maintenance
drain the air receiver - correct answer ✔✔what is an example of a daily maintenance task for a
compressor?
globe valve - correct answer ✔✔what type of valve is usually used to control the rate of flow?
non-rising stem - correct answer ✔✔what type of valve is buried?
gate valve - correct answer ✔✔what is the most common valve type used in a water treatment
plant?
Undue seat wear - correct answer ✔✔what will happen if the gate valve is left half open to
control flow?
on concrete floor in single rows - correct answer ✔✔In what manner should carbon be stored?
, a type of bearing wear - correct answer ✔✔what is brinelling?
on a concrete floor away from heat or heated pipes - correct answer ✔✔what is the
recommended manner for storing potassium permanganate?
Air - correct answer ✔✔what causes more damage to a pump's impeller?
Ohm - correct answer ✔✔What is the unit of electrical resistance?
measures amps and current - correct answer ✔✔What is an ammeter
three phase - correct answer ✔✔what type of electrical service is usually found in water plants?
3 phase - correct answer ✔✔Generally, all motors over over two HP require what type of
electrical service?
Lock out tag out - correct answer ✔✔Before starting work on any electrical equipment, you
must first ____?
Kilowatts - correct answer ✔✔What unit is used to measure the rate of power Consumption?
to prevent damage to equipment when there is an overload - correct answer ✔✔What is the
function of a shear pin?
Accuracy - correct answer ✔✔The measurement of how close an instrument determines the
true of actual reading of an instrument is called?
Questions and answers graded A+
a unit of measurement for current - correct answer ✔✔What is an Ampere?
Centrifugal - correct answer ✔✔Which of the following is a type of pump that is commonly
used in a water treatment plant?
has more than one impeller - correct answer ✔✔What is a multi-staged pump?
switch any two electrical leads - correct answer ✔✔if the pump impeller is running backwards,
what action must be taken to correct the rotation?
when the pump is running - correct answer ✔✔When should the packing of a pump be
adjusted?
air leak - correct answer ✔✔when a pump fails to deliver at its rated capacity, what is most
likely the cause?
misalignment of the couplings - correct answer ✔✔what is a common cause for vibrations in a
motor?
Plug internal leakage - correct answer ✔✔What is the purpose of the wear rings in a pump?
5 psi higher than the pumps discharge pressure - correct answer ✔✔what should the seal water
pressure be for a pump?
,block out air intake and lubricate the packing - correct answer ✔✔what is the purpose of the
seal water?
15 ft. - correct answer ✔✔what is the recommended maximum suction lift?
Positive displacement - correct answer ✔✔In a water treatment plant, what type of pump is
commonly used to deliver chemical solutions?
follow the manufacturer's recommendations - correct answer ✔✔when should you lubricate
your equipment?
a strip at a time and staggered - correct answer ✔✔In what manner is packing installed?
against a closed discharge valve - correct answer ✔✔a positive displacement pump should
never be operated________?
alternate to equalize wear - correct answer ✔✔if two of more pumps of the same size and
purpose are online, what method of operation is recommended for them?
change both halves of the seal - correct answer ✔✔If half of the mechanical seal fails, what
corrective action should be taken?
water seal - correct answer ✔✔what is the purpose of a lantern ring?
allow a slight operating leakage and allow approximately a drip per second. - correct answer
✔✔The packing of a pump should be adjusted to _________?
Replace all the belts on the drive - correct answer ✔✔On a multiple drive motor, when a belt
fails, what corrective action should be taken?
,foot valve - correct answer ✔✔To keep a centrifugal pump primed, install a _______ valve at
the end of the suction line.
Power supply - correct answer ✔✔If a motor fails to start, what should be checked first?
water hammer - correct answer ✔✔Opening or closing a valve rapidly will cause?
cavitaion - correct answer ✔✔The formation and collapse of a gas pocket or bubble on the
blade of an impeller is called?
corrective - correct answer ✔✔Changing the packing on a pump is called ________
maintenance
drain the air receiver - correct answer ✔✔what is an example of a daily maintenance task for a
compressor?
globe valve - correct answer ✔✔what type of valve is usually used to control the rate of flow?
non-rising stem - correct answer ✔✔what type of valve is buried?
gate valve - correct answer ✔✔what is the most common valve type used in a water treatment
plant?
Undue seat wear - correct answer ✔✔what will happen if the gate valve is left half open to
control flow?
on concrete floor in single rows - correct answer ✔✔In what manner should carbon be stored?
, a type of bearing wear - correct answer ✔✔what is brinelling?
on a concrete floor away from heat or heated pipes - correct answer ✔✔what is the
recommended manner for storing potassium permanganate?
Air - correct answer ✔✔what causes more damage to a pump's impeller?
Ohm - correct answer ✔✔What is the unit of electrical resistance?
measures amps and current - correct answer ✔✔What is an ammeter
three phase - correct answer ✔✔what type of electrical service is usually found in water plants?
3 phase - correct answer ✔✔Generally, all motors over over two HP require what type of
electrical service?
Lock out tag out - correct answer ✔✔Before starting work on any electrical equipment, you
must first ____?
Kilowatts - correct answer ✔✔What unit is used to measure the rate of power Consumption?
to prevent damage to equipment when there is an overload - correct answer ✔✔What is the
function of a shear pin?
Accuracy - correct answer ✔✔The measurement of how close an instrument determines the
true of actual reading of an instrument is called?
