Pipefitter Star Exam Questions And Answers.
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
, Pipefitter Star Exam Questions And Answers.
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
, Pipefitter Star Exam Questions And Answers.
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
, Pipefitter Star Exam Questions And Answers.
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 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
, Pipefitter Star Exam Questions And Answers.
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
, Pipefitter Star Exam Questions And Answers.
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
, Pipefitter Star Exam Questions And Answers.
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.
