PIPEFITTER EXAM
What causes 90% of all construction injuries and deaths and are used to help OSHA
inspectors improve their effectiveness? - ANSWER Focus Hazards
What is the minimum safe working distance for overhead power lines? - ANSWER
10 feet
What is the standard procedure used to safely de-energize equipment on circuits
before they are worked on? - ANSWER Lockout/Tagout
Which of the following is not true about Material Safety Data Sheets? - ANSWER
They can be written in any language
What are the four focus inspections OSHA compliance officers look for? - ANSWER
Fall Hazards, Electrical Hazards, Caught in, Struck by
The sizes of pipe are identified by the measurement called the: - ANSWER Nominal
pipe size NPS
Steel pipe is supplied with the following end finish (es): - ANSWER PESC, T & C
TBE
(All of the above)
What is a typical type of welded pipe joints? - ANSWER Butt-welded, Socket-
welded, Slip-on Flanged (All of the above)
List the four principle functions of valves. - ANSWER Start/Stop, Regulate/Throttle,
Relief, Reduce
Regulating or throttling flow is done with a: - ANSWER Both B and C, (globe and
gate valve)
Name the two basic types of check valves. - ANSWER Lift and Swing
The most common hanger used in piping systems is the: - ANSWER Clevis
Never expose any part of a compressed gas cylinder to temperatures above: -
ANSWER 125°F
The four types of copper tube joints are soldered, brazed, flared and _____? -
ANSWER compression
What is the maximum recommended service temperature when a brazed joint is
used? - ANSWER 350 degrees F
Poor alignment of tube joints will cause: - ANSWER spacing difference between
tubes and fittings
,After fittings and tubes are cleaned and fluxed they should be assembled and
soldered: - ANSWER as soon as possible
Name three basic hitches which can be used for lifting with a sling - ANSWER
Straight, Choker, Basket
Which hitch can support the most weight? - ANSWER Basket hitch
Why should the angle between the leg of a sling and the load never be less than 30
degrees? - ANSWER More stress loads are applied on slings.
What is the weakest part of a chain hoist? - ANSWER Lower hook
An oxyacetylene flame has a peak temperature of approximately: - ANSWER
6300°F
What is the purpose of slightly opening/cracking a gas cylinder valve before installing
a gas regulator? - ANSWER clear debris
Why is it important to ensure that no part of the oxygen handling equipment comes in
contact with oil? - ANSWER causes an explosion
What is the constant used to find the travel with a 45 degree offset? - ANSWER
1.414
What is the constant used to find the offset or advance with a 45o offset? - ANSWER
.707
Add: 5 1/8 + 1 1/4 + 4 ½ = - ANSWER 10 7/8
Subtract: 9 5/8 - 6 15/16 = - ANSWER 2 11/16
Multiply: 3 1/5 x 1 ¼ x 1 1/3 = - ANSWER 5 1/3
Divide: 11 ¼ by 2 ½ = - ANSWER 4 1/2
Change the following to architectural measurements 3.96': - ANSWER 3' - 11 ½"
MSDS is part of the "right to know" law. - ANSWER t
IDLH is an individual's daily level of hazards - ANSWER f
Inhalation, ingestion, absorption and injection are four routes of entry. - ANSWER t
When voltage is applied to a conductor, free electrons: - ANSWER Are impelled
along the conductor
The magnetic field around a current-carrying wire: - ANSWER Exists at all points
along its length
,A lamp has a source of 110 volts and current of 0.9 amps, what is the resistance of
the lamp? - ANSWER 122.2 ohms
The device used in circuits to prevent damage from overloads is called a: - ANSWER
Fuse
A thermocouple: - ANSWER Generates a small amount of voltage when heated
Sensible heat is defined as: - ANSWER quantity of heat involved to change a
substance that can be measured with a thermometer
Latent heat is defined as: - ANSWER amount of heat required to bring about a
change in state in a substance
Specific heat is defined as: - ANSWER amount of heat in BTU's required to change
the temperature of 1 pound of a substance 1oF.
The pressure at a certain depth below the surface of a liquid: - ANSWER is the
same in all directions
Pressure is: - ANSWER force per unit of area
Work is defined as: - ANSWER force times distance
Name the two main classifications of pump types. - ANSWER Positive Displacement
pumps and Non-Positive Displacement pumps
The violent flashing and collapsing of vapor bubbles in a centrifugal pump is called? -
ANSWER Cavitation
What are two kinds of misalignment that must be checked for when installing pumps
- ANSWER Parallel and Angular alignment
What steps should be taken before starting a pump for the first time? - ANSWER
Prime, Check suction and discharge valves, Check rotation
What are two of the three main items shown on a pump curve? - ANSWER Head in
Feet and GPM
Theoretically, how many feet can a pump can raise water vertically by suction? -
ANSWER 34 feet
The welder is at most serious and immediate risk of - ANSWER electrocution
The first two digits on welding rod indicate? - ANSWER tensile strength
The next to last digit indicates the ____________ of the weld. - ANSWER position
Utilizing the piping drawing, calculate the measurements for "B": - ANSWER 5' - 5"
, Utilizing the piping drawing, calculate the measurements for "D": - ANSWER 32' - 3"
Utilizing the piping drawing, calculate the measurements for "K": - ANSWER 10' - 8"
Utilizing the piping drawing, calculate the measurements for "N": - ANSWER 24' - 2"
Utilizing the piping drawing, calculate the measurements for "V": - ANSWER 6' - 8"
Utilizing the piping drawing, calculate the measurements for "T": - ANSWER 2' - 0"
An increase in pressure will cause the boiling temperature of a liquid to: - ANSWER
Increase
The device that controls the pressure in a low-pressure steam boiler is called a/an: -
ANSWER Pressuretrol
The two basic types of low-water cutoffs are: - ANSWER Float type and electric
probe type
Thermostatic traps are opened and closed by: - ANSWER A flexible bellows
In a float and thermostatic trap the float rises to discharge: - ANSWER Condensate
Condensate in steam lines could result in: - ANSWER Water hammer
The 4 main components in a refrigeration system are: - ANSWER Compressor,
Condenser, Evaporator, Metering device
What is the function of a metering device? - ANSWER Regulates the flow of
refrigerant.
What is the function of an evaporator? - ANSWER Absorb heat from the system.
What is the function of a compressor? - ANSWER Create flow in the system.
What is the function of a condenser? - ANSWER Reject heat from the refrigerant.
A vapor heated above its corresponding saturation temperature with no change in
pressure is: - ANSWER Superheated
What does the "R" which is stamped on all tube benders represent? - ANSWER
Right
When your first bend is 3" end to center, where do you mark your tube? - ANSWER
3"
Current polarity becomes an important factor with _______ power sources. -
ANSWER All DC
What causes 90% of all construction injuries and deaths and are used to help OSHA
inspectors improve their effectiveness? - ANSWER Focus Hazards
What is the minimum safe working distance for overhead power lines? - ANSWER
10 feet
What is the standard procedure used to safely de-energize equipment on circuits
before they are worked on? - ANSWER Lockout/Tagout
Which of the following is not true about Material Safety Data Sheets? - ANSWER
They can be written in any language
What are the four focus inspections OSHA compliance officers look for? - ANSWER
Fall Hazards, Electrical Hazards, Caught in, Struck by
The sizes of pipe are identified by the measurement called the: - ANSWER Nominal
pipe size NPS
Steel pipe is supplied with the following end finish (es): - ANSWER PESC, T & C
TBE
(All of the above)
What is a typical type of welded pipe joints? - ANSWER Butt-welded, Socket-
welded, Slip-on Flanged (All of the above)
List the four principle functions of valves. - ANSWER Start/Stop, Regulate/Throttle,
Relief, Reduce
Regulating or throttling flow is done with a: - ANSWER Both B and C, (globe and
gate valve)
Name the two basic types of check valves. - ANSWER Lift and Swing
The most common hanger used in piping systems is the: - ANSWER Clevis
Never expose any part of a compressed gas cylinder to temperatures above: -
ANSWER 125°F
The four types of copper tube joints are soldered, brazed, flared and _____? -
ANSWER compression
What is the maximum recommended service temperature when a brazed joint is
used? - ANSWER 350 degrees F
Poor alignment of tube joints will cause: - ANSWER spacing difference between
tubes and fittings
,After fittings and tubes are cleaned and fluxed they should be assembled and
soldered: - ANSWER as soon as possible
Name three basic hitches which can be used for lifting with a sling - ANSWER
Straight, Choker, Basket
Which hitch can support the most weight? - ANSWER Basket hitch
Why should the angle between the leg of a sling and the load never be less than 30
degrees? - ANSWER More stress loads are applied on slings.
What is the weakest part of a chain hoist? - ANSWER Lower hook
An oxyacetylene flame has a peak temperature of approximately: - ANSWER
6300°F
What is the purpose of slightly opening/cracking a gas cylinder valve before installing
a gas regulator? - ANSWER clear debris
Why is it important to ensure that no part of the oxygen handling equipment comes in
contact with oil? - ANSWER causes an explosion
What is the constant used to find the travel with a 45 degree offset? - ANSWER
1.414
What is the constant used to find the offset or advance with a 45o offset? - ANSWER
.707
Add: 5 1/8 + 1 1/4 + 4 ½ = - ANSWER 10 7/8
Subtract: 9 5/8 - 6 15/16 = - ANSWER 2 11/16
Multiply: 3 1/5 x 1 ¼ x 1 1/3 = - ANSWER 5 1/3
Divide: 11 ¼ by 2 ½ = - ANSWER 4 1/2
Change the following to architectural measurements 3.96': - ANSWER 3' - 11 ½"
MSDS is part of the "right to know" law. - ANSWER t
IDLH is an individual's daily level of hazards - ANSWER f
Inhalation, ingestion, absorption and injection are four routes of entry. - ANSWER t
When voltage is applied to a conductor, free electrons: - ANSWER Are impelled
along the conductor
The magnetic field around a current-carrying wire: - ANSWER Exists at all points
along its length
,A lamp has a source of 110 volts and current of 0.9 amps, what is the resistance of
the lamp? - ANSWER 122.2 ohms
The device used in circuits to prevent damage from overloads is called a: - ANSWER
Fuse
A thermocouple: - ANSWER Generates a small amount of voltage when heated
Sensible heat is defined as: - ANSWER quantity of heat involved to change a
substance that can be measured with a thermometer
Latent heat is defined as: - ANSWER amount of heat required to bring about a
change in state in a substance
Specific heat is defined as: - ANSWER amount of heat in BTU's required to change
the temperature of 1 pound of a substance 1oF.
The pressure at a certain depth below the surface of a liquid: - ANSWER is the
same in all directions
Pressure is: - ANSWER force per unit of area
Work is defined as: - ANSWER force times distance
Name the two main classifications of pump types. - ANSWER Positive Displacement
pumps and Non-Positive Displacement pumps
The violent flashing and collapsing of vapor bubbles in a centrifugal pump is called? -
ANSWER Cavitation
What are two kinds of misalignment that must be checked for when installing pumps
- ANSWER Parallel and Angular alignment
What steps should be taken before starting a pump for the first time? - ANSWER
Prime, Check suction and discharge valves, Check rotation
What are two of the three main items shown on a pump curve? - ANSWER Head in
Feet and GPM
Theoretically, how many feet can a pump can raise water vertically by suction? -
ANSWER 34 feet
The welder is at most serious and immediate risk of - ANSWER electrocution
The first two digits on welding rod indicate? - ANSWER tensile strength
The next to last digit indicates the ____________ of the weld. - ANSWER position
Utilizing the piping drawing, calculate the measurements for "B": - ANSWER 5' - 5"
, Utilizing the piping drawing, calculate the measurements for "D": - ANSWER 32' - 3"
Utilizing the piping drawing, calculate the measurements for "K": - ANSWER 10' - 8"
Utilizing the piping drawing, calculate the measurements for "N": - ANSWER 24' - 2"
Utilizing the piping drawing, calculate the measurements for "V": - ANSWER 6' - 8"
Utilizing the piping drawing, calculate the measurements for "T": - ANSWER 2' - 0"
An increase in pressure will cause the boiling temperature of a liquid to: - ANSWER
Increase
The device that controls the pressure in a low-pressure steam boiler is called a/an: -
ANSWER Pressuretrol
The two basic types of low-water cutoffs are: - ANSWER Float type and electric
probe type
Thermostatic traps are opened and closed by: - ANSWER A flexible bellows
In a float and thermostatic trap the float rises to discharge: - ANSWER Condensate
Condensate in steam lines could result in: - ANSWER Water hammer
The 4 main components in a refrigeration system are: - ANSWER Compressor,
Condenser, Evaporator, Metering device
What is the function of a metering device? - ANSWER Regulates the flow of
refrigerant.
What is the function of an evaporator? - ANSWER Absorb heat from the system.
What is the function of a compressor? - ANSWER Create flow in the system.
What is the function of a condenser? - ANSWER Reject heat from the refrigerant.
A vapor heated above its corresponding saturation temperature with no change in
pressure is: - ANSWER Superheated
What does the "R" which is stamped on all tube benders represent? - ANSWER
Right
When your first bend is 3" end to center, where do you mark your tube? - ANSWER
3"
Current polarity becomes an important factor with _______ power sources. -
ANSWER All DC
