MILLWRIGHT NCCER QUESTIONS WITH CORRECT ANSWERS 2025/2026

MILLWRIGHT NCCER QUESTIONS WITH CORRECT
ANSWERS 2025/2026
OneQtypeQofQcommonQgearboxQisQtheQ .
A) rightQ-angleQdrive
B) bevelQbox
C) fluidQdrive
D) triangleQdriveQ-QANS-A)QRight-angleQdrive

DoubleQhelicalQgearsQareQespeciallyQeffectiveQinQapplicationsQwhereQ areQproblems.
A) shockQandQvibration
B) differentQhelicalQangles
C) misalignments
D) multipleQgearQsetsQ-QANS-A)QShockQandQvibration

DestructiveQpittingQoccursQonQaQgearQonQoneQsideQorQtheQotherQofQtheQ .
A) root
B) wholeQdepth
C) tip
D) pitchQlineQ-QANS-D)QPitchQLine

PressureQisQnormallyQmeasuredQinQ .
A) poundsQofQforce
B) foot-pounds
C) inch-pounds
D) poundsQperQsquareQinchQ-QANS-D)QPoundsQperQsquareQinch

TheQdistanceQfromQtheQtipQofQaQgearQtoothQonQoneQsideQofQaQgearQtoQtheQtipQofQaQtoothQon
QtheQoppositeQsideQofQtheQgearQisQcalledQtheQ .
A) wholeQdepth
B) majorQdiameter
C) pitchQdiameter
D) majorQcircumferenceQ-QANS-B)QMajorQDiameter

TheQPistonsQinQaQtwo-pistonQcylinderQ .
A) alwaysQmoveQtogether
B) areQcalledQdualQpistons
C) canQmoveQtogetherQorQseparately
D) doQnotQmoveQwhenQtheQpressureQisQtooQhighQ-QANS-C)QCanQmoveQtogetherQorQseparately

EngagedQgearsQalwaysQhaveQtheQsameQ .
A) numberQofQteeth
B) surfaceQspeed

,C) failureQrate
D) rpmQ-QANS-B)QSurfaceQspeed

TheQcombinationQofQhydraulicQfluidQandQairQisQcalledQ .
A) airQabsorption
B) oxidation
C) emulsion
D) foamingQ-QANS-B)Qoxidation

WhenQproperlyQdesignedQandQlubricated,Q gearsQareQtheQsmoothest.
A) helical
B) bevel
C) worm
D) spurQ-QANS-C)Qworm

HydraulicQlinesQmustQbeQ
soQthatQenergyQwillQbeQtransmittedQeffectivelyQthrougho
utQtheQsystem.
A) rigid
B) thin
C) flexible
D) sizedQ-QANS-D)Qsized

TheQgearQboxQhousingQisQsealedQandQlubricatedQtoQminimizeQwearQandQdistributeQtheQhe
atQgeneratedQatQtheQ .
A) oilQvent
B) gearQteethQcontactQpoints
C) motor
D) outputQshaftQ-QANS-B)QgearQteethQcontactQpoints

CylindersQinQaQhydraulicQsystemQareQcalledQ .
A) pistons
B) linearQactuators
C) pumps
D) shockQabsorbersQ-QANS-B)QlinearQactuators

DestructiveQpittingQisQcausedQbyQ theQgears.
A) tapping
B) overloading
C) oiling
D) lighteningQ-QANS-B)Qoverloading

CorrosionQisQcausedQbyQ .
A) pressureQthatQisQtooQhigh
B) viscosityQthatQisQtooQhigh

, C) acidsQcreatedQbyQtheQcombinationQofQairQandQliquid
D) aQlowQpourQpointQ-QANS-C)QacidsQcreatedQbyQtheQcombinationQofQairQandQliquid

ScuffingQandQscoringQcanQresultQfromQ orQlubricationQfailure.
A) excessQlubricant
B) poorQgrounding
C) highQspeed
D) surfaceQroughnessQ-QANS-D)QsurfaceQroughness

TheQtwoQmainQfunctionsQofQaQhydraulicQfluidQareQtoQ .
A) lubricateQpartsQandQproduceQemulsions
B) produceQemulsionsQandQlowQviscosity
C) transmitQpowerQandQlubricateQparts
D) createQoxidationQandQremoveQrustQ-QANS-C)QtransmitQpowerQandQlubricateQparts

ForQremovingQhard-to-removeQgasketQmaterialsQfoundQonQsealingQsurfaces,Q
is
recommended.
Q

A) aQsharpenedQbrassQputtyQknife
B) acid
C) aQgrinder
D) sandpaperQ-QANS-A)QaQsharpenedQbrassQputtyQknife

AQdifferentialQtransmitsQpowerQfromQaQdriveQshaftQ90QdegreesQtoQ .
A) aQturbine
B) aQgearbox
C) twoQaxles
D) aQgeneratorQ-QANS-C)QtwoQaxles

TheQmaterialsQusedQinQstrainersQandQfiltersQtoQremoveQparticlesQfromQhydraulicQfluidQareQcalled
.
A) fabrics
B) sifters
C) fibers
D) mediumsQ-QANS-D)Qmediums

AQcompressorQwithQaQfanQblowingQonQtheQtubingQconnectionQtheQdischargeQofQtheQcompresso
r'sQfirstQstageQtoQtheQinletQofQtheQcompressor'sQsecondQstageQisQequippedQwithQanQ .
A) oil-cooledQdryer
B) oil-cooledQreceiver
C) air-cooledQintercooler
D) air-cooledQaftercoolerQ-QANS-C)Qair-cooledQintercooler

TheQmajorQenergyQlossQbetweenQgearsQisQfromQ .
A) pitch