Pipefitter Star Exam Part 1 questions with correct
answers
Violent flashing and collapsing of vapor bubbles in a centrifugal pump is called. - **🔰
VERIFIED ANSWERS🔰 ✔✔Cavitation
Device that controls the pressure in a low pressure steam boiler - **🔰 VERIFIED
ANSWERS🔰 ✔✔Pressuretrol
Function of an evaporator - **🔰 VERIFIED ANSWERS🔰 ✔✔Absorb heat from the system
Metal which has a high iron content - **🔰 VERIFIED ANSWERS🔰 ✔✔ferrous
Why should the angle between the leg of a swing and the load never be less than 30
degrees? - **🔰 VERIFIED ANSWERS🔰 ✔✔More stress loads are applied on the sling
What are two kinds of misalignment that must be checked for when installing pumps? -
**🔰 VERIFIED ANSWERS🔰 ✔✔Parallel and angular alignment
What is the function of a compressor? - **🔰 VERIFIED ANSWERS🔰 ✔✔Create flow in the
system
After fittings and tubes are cleaned and fluxed, they should be assembled and soldered -
**🔰 VERIFIED ANSWERS🔰 ✔✔As soon as possible
The relief valve is sized to the ________ rating of a boiler - **🔰 VERIFIED ANSWERS🔰
✔✔Gross Output
,Four types of copper tube joints - **🔰 VERIFIED ANSWERS🔰 ✔✔Soldered, Brazed, Flared,
Compression
Most common hanger type - **🔰 VERIFIED ANSWERS🔰 ✔✔Clevis
Which hitch can support the most weight? - **🔰 VERIFIED ANSWERS🔰 ✔✔Basket Hitch
Minimum safe working distance for overhead power lines - **🔰 VERIFIED ANSWERS🔰
✔✔10 feet
Three basic hitches which can be used for lifting with a sling - **🔰 VERIFIED ANSWERS🔰
✔✔Straight, Choker, Basket
Amount of heat required to bring about a change in a state in a substance - **🔰 VERIFIED
ANSWERS🔰 ✔✔Latent heat
Harmful products of incomplete combustion - **🔰 VERIFIED ANSWERS🔰 ✔✔Carbon
Monoxide & Aldehydes
Regulating or throttling flow is done with - **🔰 VERIFIED ANSWERS🔰 ✔✔Globe
4 main components in a refrigeration system - **🔰 VERIFIED ANSWERS🔰
✔✔Compressor, Condenser, Evaporator, Metering device.
Quanting of heat involved to change a substance that can be measured with a thermometer
- **🔰 VERIFIED ANSWERS🔰 ✔✔Sensible heat
Main advantage of a fluidized bed boiler - **🔰 VERIFIED ANSWERS🔰 ✔✔Low SO & NOx
emissions
, Two basic types of low-water cutoffs - **🔰 VERIFIED ANSWERS🔰 ✔✔Float type and
electric probe
Measurement unit used to express rate of flow - **🔰 VERIFIED ANSWERS🔰 ✔✔Velocity
Weakest part of a chain hoist - **🔰 VERIFIED ANSWERS🔰 ✔✔Lower Hook
Four principle functions of valves - **🔰 VERIFIED ANSWERS🔰 ✔✔Start/Stop,
Regulate/Throttle, Relief, Reduce
Oxyacetylene flame has a peak temperature of approximately - **🔰 VERIFIED ANSWERS🔰
✔✔6300
Float and thermostatic trap rises to discharge - **🔰 VERIFIED ANSWERS🔰 ✔✔Condensate
Vapor heated above its corresponding saturation temperature with no change in pressure -
**🔰 VERIFIED ANSWERS🔰 ✔✔Superheated
Magnetic field around a current carrying wire - **🔰 VERIFIED ANSWERS🔰 ✔✔Exists at all
points long its length
How many feet can a pump raise water vertically by suction - **🔰 VERIFIED ANSWERS🔰
✔✔34 feet
What steps should be taken before starting a pump for the first time - **🔰 VERIFIED
ANSWERS🔰 ✔✔Prime, Check suction and discharge valves, Check rotation
answers
Violent flashing and collapsing of vapor bubbles in a centrifugal pump is called. - **🔰
VERIFIED ANSWERS🔰 ✔✔Cavitation
Device that controls the pressure in a low pressure steam boiler - **🔰 VERIFIED
ANSWERS🔰 ✔✔Pressuretrol
Function of an evaporator - **🔰 VERIFIED ANSWERS🔰 ✔✔Absorb heat from the system
Metal which has a high iron content - **🔰 VERIFIED ANSWERS🔰 ✔✔ferrous
Why should the angle between the leg of a swing and the load never be less than 30
degrees? - **🔰 VERIFIED ANSWERS🔰 ✔✔More stress loads are applied on the sling
What are two kinds of misalignment that must be checked for when installing pumps? -
**🔰 VERIFIED ANSWERS🔰 ✔✔Parallel and angular alignment
What is the function of a compressor? - **🔰 VERIFIED ANSWERS🔰 ✔✔Create flow in the
system
After fittings and tubes are cleaned and fluxed, they should be assembled and soldered -
**🔰 VERIFIED ANSWERS🔰 ✔✔As soon as possible
The relief valve is sized to the ________ rating of a boiler - **🔰 VERIFIED ANSWERS🔰
✔✔Gross Output
,Four types of copper tube joints - **🔰 VERIFIED ANSWERS🔰 ✔✔Soldered, Brazed, Flared,
Compression
Most common hanger type - **🔰 VERIFIED ANSWERS🔰 ✔✔Clevis
Which hitch can support the most weight? - **🔰 VERIFIED ANSWERS🔰 ✔✔Basket Hitch
Minimum safe working distance for overhead power lines - **🔰 VERIFIED ANSWERS🔰
✔✔10 feet
Three basic hitches which can be used for lifting with a sling - **🔰 VERIFIED ANSWERS🔰
✔✔Straight, Choker, Basket
Amount of heat required to bring about a change in a state in a substance - **🔰 VERIFIED
ANSWERS🔰 ✔✔Latent heat
Harmful products of incomplete combustion - **🔰 VERIFIED ANSWERS🔰 ✔✔Carbon
Monoxide & Aldehydes
Regulating or throttling flow is done with - **🔰 VERIFIED ANSWERS🔰 ✔✔Globe
4 main components in a refrigeration system - **🔰 VERIFIED ANSWERS🔰
✔✔Compressor, Condenser, Evaporator, Metering device.
Quanting of heat involved to change a substance that can be measured with a thermometer
- **🔰 VERIFIED ANSWERS🔰 ✔✔Sensible heat
Main advantage of a fluidized bed boiler - **🔰 VERIFIED ANSWERS🔰 ✔✔Low SO & NOx
emissions
, Two basic types of low-water cutoffs - **🔰 VERIFIED ANSWERS🔰 ✔✔Float type and
electric probe
Measurement unit used to express rate of flow - **🔰 VERIFIED ANSWERS🔰 ✔✔Velocity
Weakest part of a chain hoist - **🔰 VERIFIED ANSWERS🔰 ✔✔Lower Hook
Four principle functions of valves - **🔰 VERIFIED ANSWERS🔰 ✔✔Start/Stop,
Regulate/Throttle, Relief, Reduce
Oxyacetylene flame has a peak temperature of approximately - **🔰 VERIFIED ANSWERS🔰
✔✔6300
Float and thermostatic trap rises to discharge - **🔰 VERIFIED ANSWERS🔰 ✔✔Condensate
Vapor heated above its corresponding saturation temperature with no change in pressure -
**🔰 VERIFIED ANSWERS🔰 ✔✔Superheated
Magnetic field around a current carrying wire - **🔰 VERIFIED ANSWERS🔰 ✔✔Exists at all
points long its length
How many feet can a pump raise water vertically by suction - **🔰 VERIFIED ANSWERS🔰
✔✔34 feet
What steps should be taken before starting a pump for the first time - **🔰 VERIFIED
ANSWERS🔰 ✔✔Prime, Check suction and discharge valves, Check rotation
