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Pipefitter Star Exam-Questions with Correct Answers/ Verified/ Latest (2024/2025)
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Pipefitter Star Exam-Questions with Correct Answers/ Verified/ Latest (2024/2025)
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Pipefitter Star Exam-Questions with Correct Answers/ Verified/Latest (2024/2025)
What causes 90% of all construction injuries and deaths and are used to help OSHA
inspectors improve their effectiveness? - ✔✔Focus Hazards
What is the minimum safe working distance for overhead power lines? - ✔✔10 feet
What is the standard procedure used to safely de-energize equipment on circuits before
they are worked on? - ✔✔Lockout/Tagout
Which of the following is not true about Material Safety Data Sheets? - ✔✔They can be
written in any language
What are the four focus inspections OSHA compliance officers look for? - ✔✔Fall Hazards,
Electrical Hazards, Caught in, Struck by
The sizes of pipe are identified by the measurement called the: - ✔✔Nominal pipe size NPS
Steel pipe is supplied with the following end finish (es): - ✔✔PESC, T & C TBE
(All of the above)
What is a typical type of welded pipe joints? - ✔✔Butt-welded, Socket-welded, Slip-on
Flanged (All of the above)
List the four principle functions of valves. - ✔✔Start/Stop, Regulate/Throttle, Relief, Reduce
Regulating or throttling flow is done with a: - ✔✔Both B and C, (globe and gate valve)
Name the two basic types of check valves. - ✔✔Lift and Swing
,The most common hanger used in piping systems is the: - ✔✔Clevis
Never expose any part of a compressed gas cylinder to temperatures above: - ✔✔125°F
The four types of copper tube joints are soldered, brazed, flared and _____? -
✔✔compression
What is the maximum recommended service temperature when a brazed joint is used? -
✔✔350 degrees F
Poor alignment of tube joints will cause: - ✔✔spacing difference between tubes and fittings
After fittings and tubes are cleaned and fluxed they should be assembled and soldered: -
✔✔as soon as possible
Name three basic hitches which can be used for lifting with a sling - ✔✔Straight, Choker,
Basket
Which hitch can support the most weight? - ✔✔Basket hitch
Why should the angle between the leg of a sling and the load never be less than 30 degrees?
- ✔✔More stress loads are applied on slings.
What is the weakest part of a chain hoist? - ✔✔Lower hook
An oxyacetylene flame has a peak temperature of approximately: - ✔✔6300°F
What is the purpose of slightly opening/cracking a gas cylinder valve before installing a gas
regulator? - ✔✔clear debris
,Why is it important to ensure that no part of the oxygen handling equipment comes in
contact with oil? - ✔✔causes an explosion
What is the constant used to find the travel with a 45 degree offset? - ✔✔1.414
What is the constant used to find the offset or advance with a 45o offset? - ✔✔.707
Add: 5 1/8 + 1 1/4 + 4 ½ = - ✔✔10 7/8
Subtract: 9 5/8 - 6 15/16 = - ✔✔2 11/16
Multiply: 3 1/5 x 1 ¼ x 1 1/3 = - ✔✔5 1/3
Divide: 11 ¼ by 2 ½ = - ✔✔4 1/2
Change the following to architectural measurements 3.96': - ✔✔3' - 11 ½"
MSDS is part of the "right to know" law. - ✔✔t
IDLH is an individual's daily level of hazards - ✔✔f
Inhalation, ingestion, absorption and injection are four routes of entry. - ✔✔t
When voltage is applied to a conductor, free electrons: - ✔✔Are impelled along the
conductor
The magnetic field around a current-carrying wire: - ✔✔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? - ✔✔122.2 ohms
The device used in circuits to prevent damage from overloads is called a: - ✔✔Fuse
A thermocouple: - ✔✔Generates a small amount of voltage when heated
Sensible heat is defined as: - ✔✔quantity of heat involved to change a substance that can be
measured with a thermometer
Latent heat is defined as: - ✔✔amount of heat required to bring about a change in state in a
substance
Specific heat is defined as: - ✔✔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: - ✔✔is the same in all
directions
Pressure is: - ✔✔force per unit of area
Work is defined as: - ✔✔force times distance
Name the two main classifications of pump types. - ✔✔Positive Displacement pumps and
Non-Positive Displacement pumps
The violent flashing and collapsing of vapor bubbles in a centrifugal pump is called? -
✔✔Cavitation
What are two kinds of misalignment that must be checked for when installing pumps -
✔✔Parallel and Angular alignment
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