Pipefitter Star Exam Part 1 Exam Questions And
Correct Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download Pdf
Violent flashing and collapsing of vapor bubbles in a centrifugal
pump is called.☑️CORRECT ANSWER☑️☑️Cavitation
Device that controls the pressure in a low pressure steam
boiler☑️CORRECT ANSWER☑️☑️Pressuretrol
Function of an evaporator☑️CORRECT ANSWER☑️☑️Absorb heat
from the system
Metal which has a high iron content☑️CORRECT
ANSWER☑️☑️ferrous
Why should the angle between the leg of a swing and the load
never be less than 30 degrees?☑️CORRECT ANSWER☑️☑️More
stress loads are applied on the sling
,What are two kinds of misalignment that must be checked for
when installing pumps?☑️CORRECT ANSWER☑️☑️Parallel and
angular alignment
What is the function of a compressor?☑️CORRECT
ANSWER☑️☑️Create flow in the system
After fittings and tubes are cleaned and fluxed, they should be
assembled and soldered☑️CORRECT ANSWER☑️☑️As soon as
possible
The relief valve is sized to the ________ rating of a
boiler☑️CORRECT ANSWER☑️☑️Gross Output
Four types of copper tube joints☑️CORRECT
ANSWER☑️☑️Soldered, Brazed, Flared, Compression
Most common hanger type☑️CORRECT ANSWER☑️☑️Clevis
Which hitch can support the most weight?☑️CORRECT
ANSWER☑️☑️Basket Hitch
,Minimum safe working distance for overhead power
lines☑️CORRECT ANSWER☑️☑️10 feet
Three basic hitches which can be used for lifting with a
sling☑️CORRECT ANSWER☑️☑️Straight, Choker, Basket
Amount of heat required to bring about a change in a state in a
substance☑️CORRECT ANSWER☑️☑️Latent heat
Harmful products of incomplete combustion☑️CORRECT
ANSWER☑️☑️Carbon Monoxide & Aldehydes
Regulating or throttling flow is done with☑️CORRECT
ANSWER☑️☑️Globe
4 main components in a refrigeration system☑️CORRECT
ANSWER☑️☑️Compressor, Condenser, Evaporator, Metering
device.
, Quanting of heat involved to change a substance that can be
measured with a thermometer☑️CORRECT
ANSWER☑️☑️Sensible heat
Main advantage of a fluidized bed boiler☑️CORRECT
ANSWER☑️☑️Low SO & NOx emissions
Two basic types of low-water cutoffs☑️CORRECT
ANSWER☑️☑️Float type and electric probe
Measurement unit used to express rate of flow☑️CORRECT
ANSWER☑️☑️Velocity
Weakest part of a chain hoist☑️CORRECT ANSWER☑️☑️Lower
Hook
Four principle functions of valves☑️CORRECT
ANSWER☑️☑️Start/Stop, Regulate/Throttle, Relief, Reduce
Oxyacetylene flame has a peak temperature of
approximately☑️CORRECT ANSWER☑️☑️6300
Correct Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download Pdf
Violent flashing and collapsing of vapor bubbles in a centrifugal
pump is called.☑️CORRECT ANSWER☑️☑️Cavitation
Device that controls the pressure in a low pressure steam
boiler☑️CORRECT ANSWER☑️☑️Pressuretrol
Function of an evaporator☑️CORRECT ANSWER☑️☑️Absorb heat
from the system
Metal which has a high iron content☑️CORRECT
ANSWER☑️☑️ferrous
Why should the angle between the leg of a swing and the load
never be less than 30 degrees?☑️CORRECT ANSWER☑️☑️More
stress loads are applied on the sling
,What are two kinds of misalignment that must be checked for
when installing pumps?☑️CORRECT ANSWER☑️☑️Parallel and
angular alignment
What is the function of a compressor?☑️CORRECT
ANSWER☑️☑️Create flow in the system
After fittings and tubes are cleaned and fluxed, they should be
assembled and soldered☑️CORRECT ANSWER☑️☑️As soon as
possible
The relief valve is sized to the ________ rating of a
boiler☑️CORRECT ANSWER☑️☑️Gross Output
Four types of copper tube joints☑️CORRECT
ANSWER☑️☑️Soldered, Brazed, Flared, Compression
Most common hanger type☑️CORRECT ANSWER☑️☑️Clevis
Which hitch can support the most weight?☑️CORRECT
ANSWER☑️☑️Basket Hitch
,Minimum safe working distance for overhead power
lines☑️CORRECT ANSWER☑️☑️10 feet
Three basic hitches which can be used for lifting with a
sling☑️CORRECT ANSWER☑️☑️Straight, Choker, Basket
Amount of heat required to bring about a change in a state in a
substance☑️CORRECT ANSWER☑️☑️Latent heat
Harmful products of incomplete combustion☑️CORRECT
ANSWER☑️☑️Carbon Monoxide & Aldehydes
Regulating or throttling flow is done with☑️CORRECT
ANSWER☑️☑️Globe
4 main components in a refrigeration system☑️CORRECT
ANSWER☑️☑️Compressor, Condenser, Evaporator, Metering
device.
, Quanting of heat involved to change a substance that can be
measured with a thermometer☑️CORRECT
ANSWER☑️☑️Sensible heat
Main advantage of a fluidized bed boiler☑️CORRECT
ANSWER☑️☑️Low SO & NOx emissions
Two basic types of low-water cutoffs☑️CORRECT
ANSWER☑️☑️Float type and electric probe
Measurement unit used to express rate of flow☑️CORRECT
ANSWER☑️☑️Velocity
Weakest part of a chain hoist☑️CORRECT ANSWER☑️☑️Lower
Hook
Four principle functions of valves☑️CORRECT
ANSWER☑️☑️Start/Stop, Regulate/Throttle, Relief, Reduce
Oxyacetylene flame has a peak temperature of
approximately☑️CORRECT ANSWER☑️☑️6300
