Oil Burners For Heating Boilers Chapter 91 Exam Questions With 100% Correct And Verified Answers Graded A+ 2025

Oil Burners For Heating Boilers
Chapter 91 Exam Questions With
100% Correct And Verified Answers
Graded A+ 2025
*Maximumistaticipressureiiniaifuelioililineibeforeitheioilipum
piisilimitedibyicodeitoiapproximately:
i
*A*i10ikPa
*B*i15ikPa
*C*i80ikPa
*D*i35ikPa
*E*i70ikPai-iCORRECTiANSWERS-d

WhichiofitheifollowingiisiNOTiaitypeiofioiliburner?
i
*A*iAtmosphericiburners
*B*iSteamiatomizingiburners
*C*iMechanicalioripressureiatomizingiburners
*D*iCentrifugaliorirotaryicupiburners
*E*iAiriatomizingiburnersi-iCORRECTiANSWERS-a

Aimodulatingipressureiatomizerihasiitsireturnioiliflowiregula
tediby:
i
*A*iAimodulatingivalveitoitheiburner
*B*iAimodulatingivalveiinitheireturniline
*C*iAisolenoidivalveiinitheireturniline
*D*iAipressureiregulator
*E*iPumpispeedi-iCORRECTiANSWERS-b

Aitimeidelayioilivalve:
i
*A*iOpensiwhenitheioilipumpistarts
*B*iOpensi5itoi15isecondsiafteriignitionibegins.
*C*iOpensioniflameifailure
*D*iIsilocatedionitheireturniline



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, *E*iIsiupstreamiofitheipressureiregulatingivalvei-
iCORRECTiANSWERS-b



Regulationsirequireithatitheiminimumidistanceibetweeniani
oil-firedifurnaceiandianiindoorioilistorageitankimustibe:
i
*A*i7im
*B*i5.2im
*C*i2.1im
*D*i4.7im
*E*i9.8imi-iCORRECTiANSWERS-c

Aniairiatomizingiburneriutilizesianiairipressureiofiapproxima
tely:
i
*A*i15ikPa
*B*i150ikPa
*C*i75ikPa
*D*i95ikPa
*E*i100ikPai-iCORRECTiANSWERS-e

Toiwhichiofitheifollowingioiliburnersiisitheioilisuppliediunder
ihighipressure?
i
*A*iMechanicaliatomizingiburner
*B*iAiriatomizingiburner
*C*iRotaryicupiburner
*D*iSteamiatomizingiburner
*E*iMulti-spudiburneri-iCORRECTiANSWERS-a

Beforeibeingipumpeditoitheiburner,iheavyioilsiareiheateditoi
approximately:
i
*A*i203°C
*B*i95°C
*C*i115°C
*D*i75°C
*E*i150°Ci-iCORRECTiANSWERS-b

Aimulti-
burnericlusterihasisecondaryianditertiaryinozzlesiignitediby:

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