Pipefitter Star Exam Part 1 Questions With
Correct Answers
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
Float |and |thermostatic |trap |rises |to |discharge |- |CORRECT |ANSWER✔✔-Condensate
Vapor |heated |above |its |corresponding |saturation |temperature |with |no |change |in |pressure |- |
CORRECT |ANSWER✔✔-Superheated
Magnetic |field |around |a |current |carrying |wire |- |CORRECT |ANSWER✔✔-Exists |at |all |points |long |
its |length
How |many |feet |can |a |pump |raise |water |vertically |by |suction |- |CORRECT |ANSWER✔✔-34 |feet
What |steps |should |be |taken |before |starting |a |pump |for |the |first |time |- |CORRECT |ANSWER✔✔-
Prime, |Check |suction |and |discharge |valves, |Check |rotation
Constant |used |to |find |offset |or |advance |with |45 |degree |offset |- |CORRECT |ANSWER✔✔-.707
Correct Answers
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
Float |and |thermostatic |trap |rises |to |discharge |- |CORRECT |ANSWER✔✔-Condensate
Vapor |heated |above |its |corresponding |saturation |temperature |with |no |change |in |pressure |- |
CORRECT |ANSWER✔✔-Superheated
Magnetic |field |around |a |current |carrying |wire |- |CORRECT |ANSWER✔✔-Exists |at |all |points |long |
its |length
How |many |feet |can |a |pump |raise |water |vertically |by |suction |- |CORRECT |ANSWER✔✔-34 |feet
What |steps |should |be |taken |before |starting |a |pump |for |the |first |time |- |CORRECT |ANSWER✔✔-
Prime, |Check |suction |and |discharge |valves, |Check |rotation
Constant |used |to |find |offset |or |advance |with |45 |degree |offset |- |CORRECT |ANSWER✔✔-.707
