"C" Water Operator - 600 Study
Questions
v What is an Ampere? - a unit of measurement for current
Which of the following is a type of pump that is commonly used in a water treatment plant? - Centrifugal
What is a multi-staged pump? - has more than one impeller
if the pump impeller is running backwards, what action must be taken to correct the rotation? - switch
any two electrical leads
When should the packing of a pump be adjusted? - when the pump is running
when a pump fails to deliver at its rated capacity, what is most likely the cause? - air leak
what is a common cause for vibrations in a motor? - misalignment of the couplings
What is the purpose of the wear rings in a pump? - Plug internal leakage
what should the seal water pressure be for a pump? - 5 psi higher than the pumps discharge pressure
what is the purpose of the seal water? - block out air intake and lubricate the packing
what is the recommended maximum suction lift? - 15 ft.
In a water treatment plant, what type of pump is commonly used to deliver chemical solutions? -
Positive displacement
,when should you lubricate your equipment? - follow the manufacturer's recommendations
In what manner is packing installed? - a strip at a time and staggered
a positive displacement pump should never be operated________? - against 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? - alternate to equalize wear
If half of the mechanical seal fails, what corrective action should be taken? - change both halves of the
seal
what is the purpose of a lantern ring? - water seal
The packing of a pump should be adjusted to _________? - allow 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? - Replace all the
belts on the drive
To keep a centrifugal pump primed, install a _______ valve at the end of the suction line. - foot valve
If a motor fails to start, what should be checked first? - Power supply
Opening or closing a valve rapidly will cause? - water hammer
The formation and collapse of a gas pocket or bubble on the blade of an impeller is called? - cavitaion
Changing the packing on a pump is called ________ maintenance - corrective
,what is an example of a daily maintenance task for a compressor? - drain the air receiver
what type of valve is usually used to control the rate of flow? - globe valve
what type of valve is buried? - non-rising stem
what is the most common valve type used in a water treatment plant? - gate valve
what will happen if the gate valve is left half open to control flow? - Undue seat wear
In what manner should carbon be stored? - on concrete floor in single rows
what is brinelling? - a type of bearing wear
what is the recommended manner for storing potassium permanganate? - on a concrete floor away from
heat or heated pipes
what causes more damage to a pump's impeller? - Air
What is the unit of electrical resistance? - Ohm
What is an ammeter - measures amps and current
what type of electrical service is usually found in water plants? - three phase
Generally, all motors over over two HP require what type of electrical service? - 3 phase
Before starting work on any electrical equipment, you must first ____? - Lock out tag out
, What unit is used to measure the rate of power Consumption? - Kilowatts
What is the function of a shear pin? - to 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? - Accuracy
The readout of an instrument by the use of a pointer against a scale is an _____ reading? - analog
The device that controls the operation of equipment is called? - controller
The readout of an instrument by a direct numerical reading of the measured value id called a ________
reading? - digital
what is an instrument's ability to measure a process value and repeatedly obtain the result called? -
precision
what is the difference between the actual value and desired value? - drift
what is software? - computer programs
A device that measures the accumulative amount of a process over a 24 hour period is called? - Totalizer
What is the Williams-Steiger Federal law known as today? - OSHA
Who is responsible for your safety in the workplace? - yourself
your should never add _____ to acid because it will cause a violent reaction. - water
Questions
v What is an Ampere? - a unit of measurement for current
Which of the following is a type of pump that is commonly used in a water treatment plant? - Centrifugal
What is a multi-staged pump? - has more than one impeller
if the pump impeller is running backwards, what action must be taken to correct the rotation? - switch
any two electrical leads
When should the packing of a pump be adjusted? - when the pump is running
when a pump fails to deliver at its rated capacity, what is most likely the cause? - air leak
what is a common cause for vibrations in a motor? - misalignment of the couplings
What is the purpose of the wear rings in a pump? - Plug internal leakage
what should the seal water pressure be for a pump? - 5 psi higher than the pumps discharge pressure
what is the purpose of the seal water? - block out air intake and lubricate the packing
what is the recommended maximum suction lift? - 15 ft.
In a water treatment plant, what type of pump is commonly used to deliver chemical solutions? -
Positive displacement
,when should you lubricate your equipment? - follow the manufacturer's recommendations
In what manner is packing installed? - a strip at a time and staggered
a positive displacement pump should never be operated________? - against 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? - alternate to equalize wear
If half of the mechanical seal fails, what corrective action should be taken? - change both halves of the
seal
what is the purpose of a lantern ring? - water seal
The packing of a pump should be adjusted to _________? - allow 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? - Replace all the
belts on the drive
To keep a centrifugal pump primed, install a _______ valve at the end of the suction line. - foot valve
If a motor fails to start, what should be checked first? - Power supply
Opening or closing a valve rapidly will cause? - water hammer
The formation and collapse of a gas pocket or bubble on the blade of an impeller is called? - cavitaion
Changing the packing on a pump is called ________ maintenance - corrective
,what is an example of a daily maintenance task for a compressor? - drain the air receiver
what type of valve is usually used to control the rate of flow? - globe valve
what type of valve is buried? - non-rising stem
what is the most common valve type used in a water treatment plant? - gate valve
what will happen if the gate valve is left half open to control flow? - Undue seat wear
In what manner should carbon be stored? - on concrete floor in single rows
what is brinelling? - a type of bearing wear
what is the recommended manner for storing potassium permanganate? - on a concrete floor away from
heat or heated pipes
what causes more damage to a pump's impeller? - Air
What is the unit of electrical resistance? - Ohm
What is an ammeter - measures amps and current
what type of electrical service is usually found in water plants? - three phase
Generally, all motors over over two HP require what type of electrical service? - 3 phase
Before starting work on any electrical equipment, you must first ____? - Lock out tag out
, What unit is used to measure the rate of power Consumption? - Kilowatts
What is the function of a shear pin? - to 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? - Accuracy
The readout of an instrument by the use of a pointer against a scale is an _____ reading? - analog
The device that controls the operation of equipment is called? - controller
The readout of an instrument by a direct numerical reading of the measured value id called a ________
reading? - digital
what is an instrument's ability to measure a process value and repeatedly obtain the result called? -
precision
what is the difference between the actual value and desired value? - drift
what is software? - computer programs
A device that measures the accumulative amount of a process over a 24 hour period is called? - Totalizer
What is the Williams-Steiger Federal law known as today? - OSHA
Who is responsible for your safety in the workplace? - yourself
your should never add _____ to acid because it will cause a violent reaction. - water
