MN Boilers Test Bank – Complete Boiler License Exam Questions & Answers (2025/2026 Update)

MN BOILERS TEST BANK – COMPLETE BOILER LICENSE
EXAM QUESTIONS & ANSWERS (2025/2026 UPDATE)



1.How gmany gway gcan gheat gbe gtransferred?:
g g g g g g g g g g gANS>>Three g(Conduction g-- gConvection g-- gRadiation)



2.How gmay gtypes gof glow gpressure gare gthere?:
g g g g gANS>> gThree



3.Boiler gand gboiler gfitting gused gin gthe gstate gof gMinnesota gmust gbe
gconstructed gto gwhat gcode?: g

g g g g g g g g g gANS>>A.S.M.E



4.What gcontrols gthe gstarting gans gstopping gof gthe gburner gby gsending
gthe gtemperature gof gthe gwater gin ga ghot gwater gboiler?: g

g g g g g g g g gANS>>Aqua gStat



5.When ga ghydrostatic gtest gof ga gboiler gexceeds gthe gmaximum gallowed
gworking gpressure geach gsafety gvalve, gif gleft gattached gto gthe gboiler, gshould::

g g g g g g g g g g g g gANS>> gHave gits gvalve gdisc gheld gto gits gseat gby gmeans gof

gtesting gclamp gor g"gag"



6.Heat gcan gbe gtransferred gin gthree gways gand gthey gare::
g gANS>>Conduction g-,-Convection

- gRadiation

7.The gfirst gsequence gin gthe gseries gof gautomatic gburner gcontrol gis::
g g g g g g g gANS>> gPurging



8.Can ga glow gwater glow gwater gcondition gi ga ghot gwater gheating gtype gboiler?:
g

gggggggg ANS>> gYes, gfor gnumerous greasons

9.Other gthan ga gsafety grelieve gvalve gwhat gother gsafety gdevice gshould gbe
ginstalled gon ga ghot gwater gheating gboiler?: g

g g g g g g g g gANS>>Low gwater gcut goff



10.Each gboiler gin ga gbattery g(pipe gtogether gsharing gthe gsame gcommon
gheader) gmust ghave:: g


1 g/
g11

,MN BOILERS TEST BANK – COMPLETE BOILER LICENSE
EXAM QUESTIONS & ANSWERS (2025/2026 UPDATE)


gggggggggggg ANS>> gA gmain gstem gstop

11.what gremoves gair gfrom ga ghot gwater gboiler gsystem?:
g g g g g gANS>>Air gControl

12.In ga gstem gboiler gsystem, gthe gunit gthat gturns gbe gburner gon gand goff
gbased gon gsteam gpressure gis gthe:: g

g g g g g g g g gANS>>Pressure gControl



13.If gwater gin gthe ggauge gis gnot gvisible gbecause gof gfailure gof gthe gfeed
gwater gsupply, gwhat gshould gbe gdone?:

g g g g g g g g g gANS>> gShut goff gthe gfuel gto gthe gburner gand gsecure gthe gboiler.



14.What gconditions gare gnecessary gto gcause ga gfurnace gexplosion?:
g g g g g g g g g gANS>> gAccumula- gtion gof gunburned gfuel, goxygen gand gan

gignition gsource



15.The gLWCO gshould gbe gtested:: g
g g g g g g g gANS>>Daily



16.Gauge gpressure gplus g14.7 gpsi gis gcalled gwhat?: g
g g g g g g g g gANS>> gAbsolute gpressure



17.The gevaporation gof g34.5 gponds gof gwater gper ghour gfrom gand gat ga
gtemperature gof g212 gdegrees gFahrenheit gis gdefined gas:: g

g g g g g g g g g g gANS>>One gboiler ghorsepower



18.When ga gsafety gvalve gopens gand gcloses grapidly git gis greferred gto gas:
g g g g g g g g gANS>> gChattering



19.Furnace gexplosions gare gcaused gby ga gbuildup gof gcombustible
ggases, gor gvapors gin gthe gcombustion gchamber, gwhat gis gthe gterm gused

gto gremedy gthis gcondition?: g

g g g g g g g g g g g g gANS>> gPurging



20.Why gis ga gpigtail gor gsiphon grequired gin gsteam gpressure ggauge
glines?: g

2 g/
g11