Gas 2 Exam questions with correct answers
WHEN vIS vA vPRESSURE vTEST vDONE v? v- vanswer-AFTER vTHE vAPPLIANCE vIS
vINSTALLED
T/F? vWHEN vWELDING vA vPIPE vAPPROXIMATELY v45 vDEGREES vIS vTHE vANGLE
vFOR vTHE vPIPE vTO vBE vBEVELED v- vanswer-False
IN vA vGAS vPIPING vSYSTEM vTHE vJOINING vOF vMANUAL vVALVES vIS vDONE vBY
vWHICH vOF vTHE vFOLLOWING v? v- vanswer-FLANGED vOR vTHREADED
IS vIT vOK vTO vSLUG-PURGE vLARGE, vLONG vPIPES v? v- vanswer-YES
WHEN vPRESSURE vTESTING vAN vAPPLIANCE vBEFORE vIT vIS vCONNECTED, vWHAT
vMUST vBE vUSED vWHEN vTESTING vTHE vPIPING vSYSTEM v? v- vanswer-AIR vOR
vINTERT vGAS
WHAT vIS vTHE vMINIMUM vGUAGE vCOPPER vUSED vAS vA vTRACING vWIRE vFOR
vUNDERGROUND vPIPING v? v- vanswer-16
AS vA vGAS vTECHNICIAN vIS vIT vOK vTO vLEAVE vGAS vPIPING vIN vA vRESIDENTIAL
vBUILDING vNOT vPROPERLY vIDENTIFIED v? v- vanswer-NO
WHAT vTYPE vOF vVALVE vIS vBEST vDESCRIBED vAS vA vVALVE vTHAT vIS vENERGIZED
vON vA vCALL vFOR vHEAT vAND vDE-ENERGIZED vWHEN vTHE vDEMAND vFOR vHEAT vIS
vCOMPLETE v? v- vanswer-SOLENOID vVALVE
WHY vARE vSEPERATE vSIZING vTABLES vNEEDED vFOR vNATURAL vGAS vAND
vPROPANE v? v- vanswer-NATURAL vGAS vAND vPROPANE vHAVE vDIFFERENT
vPROPERTIES vAS vGASES
T/F? vA vFABRIC vSLING vIS vRECOMMENDED vIN vAN vEXPLOSIVE vATMOSPHERE v-
vanswer-FALSE
REGARDING vSTEEL vPIPING, vWHAT vARE vTHE vREQUIREMENTS vFOR vJOINTS v? v-
vanswer-FLANGED, vWELDED vOR vTHREADED
WHEN vDOING vWELDING vWORK vON vGAS vPIPING vWHAT vTYPE vOF vGLOVES vARE
vREQUIRED v? v- vanswer-GAUNLET vTYPE
, T/F? vALL vNON-UTILITY vGAS vPIPING vAND vTUBING vOPERATES vABOVE vGROUNG v-
vanswer-FALSE
WHEN vSERVICING vOR vINSTALLING vA vGAS vAPPLIANCE, vWHAT vSECTIONS vOF
vTHE vMANUFACTURE'S vMANUAL vMUST vBE vREAD v? v- vanswer-ALL vOF vIT
T/F? vFOR vLARGE vGAS vPIPES vTHE vNORMAL vPURGE vVELOCITY vIS v150 vFT/MIN v-
vanswer-FALSE
WHEN vGAS vPIPING vOR vTUBING vIS vINSTALLED vTHROUGH vCONCRETE vWHAT
vSOULD vTHE vGAS vTECHNICIAN vDO vTO vTHE vTUBING vOR vPIPING vUSED v? v- vanswer-
DOUBLE vWRAP, vSLEEVE vOR vCOAT vTHE vPIPING vOR vTUBING vBEING vUSED
THE vWIDTH vOF vA vROOT vGAP vWHEN vWELDING vPIPE vAND vFITTINGS vIS v? v- vanswer-
1/16 vINCH vTO v1/8 vINCH
WHAT vIS vTHE vFOURTH vPROCEDURAL vSTEP vWHEN vSIZING vGAS vPIPING v? v-
vanswer-SIZE vPIPE vSECTIONS
T/F? vFOR vRIGGING vAND vHOISTING vA vSYMMETRICAL vLOAD vIS vAN vOBJECT vTHAT
vHAS vA vUNIFORM vSHAPE vAND vA vCENTRE vOF vGRAVITY vLOCATED vEXACTLY vIN
vTHE vMIDDLE v- vanswer-TRUE
WHAT vIS vTHE vDANGER vWHEN vGAS vPIPING vIS vNOT vPROPERLY vPURGED v? v-
vanswer-ACCIDENTAL vEXPLOSION vOF vA vGAS-AIR vMIXTURE vOUTSIDE vAND
vINSIDE vTHE vPIPE
REGARDING vREGULATOR vARRANGMENTS, vWHEN vIS vTWO vSTAGE vREGULATION
vREQUIRED? v- vanswer-ON vALL vPERMANENT vPROPANE vINSTALLATIONS
T/F? vA vRELIEF vVALVE vHAS vA vRESTRICTING vELEMENT vAS vA vTYPE vOF
vOVERPRESSURE vPROTECTION v- vanswer-TRUE
WHAT vMETHOD vIS vTHE vUSED vTO vDETERMINE vHOW vMANY vB.T.U.'s vPER vHOUR vA
vGAS vAPPLIANCE vUSES? v- vanswer-CLOCKING vTHE vGAS vMETER
A vCYLINDER vTHAT vHAS vA vMAXIMUM vCAPACITY vOF v420# vOF vLIQUID vPROPANE
vHAS vA vCAPACITY vOF vHOW vMANY vPOUNDS vOF vWATER? v- vanswer-1000
WHAT vIS vTHE vCAUSES vTHE vDOWNSTREAM vPRESSURE vIN vA vREGULATOR
vDECREASES v? v- vanswer-FLOW vRATE vINCREASES
IN vA vREGULATOR vWHAT vIS vTHE vDIAPHRAM vREFERRED vTO vAS v? v- vanswer-THE
vMEASURING vELEMENT
WHEN vIS vA vPRESSURE vTEST vDONE v? v- vanswer-AFTER vTHE vAPPLIANCE vIS
vINSTALLED
T/F? vWHEN vWELDING vA vPIPE vAPPROXIMATELY v45 vDEGREES vIS vTHE vANGLE
vFOR vTHE vPIPE vTO vBE vBEVELED v- vanswer-False
IN vA vGAS vPIPING vSYSTEM vTHE vJOINING vOF vMANUAL vVALVES vIS vDONE vBY
vWHICH vOF vTHE vFOLLOWING v? v- vanswer-FLANGED vOR vTHREADED
IS vIT vOK vTO vSLUG-PURGE vLARGE, vLONG vPIPES v? v- vanswer-YES
WHEN vPRESSURE vTESTING vAN vAPPLIANCE vBEFORE vIT vIS vCONNECTED, vWHAT
vMUST vBE vUSED vWHEN vTESTING vTHE vPIPING vSYSTEM v? v- vanswer-AIR vOR
vINTERT vGAS
WHAT vIS vTHE vMINIMUM vGUAGE vCOPPER vUSED vAS vA vTRACING vWIRE vFOR
vUNDERGROUND vPIPING v? v- vanswer-16
AS vA vGAS vTECHNICIAN vIS vIT vOK vTO vLEAVE vGAS vPIPING vIN vA vRESIDENTIAL
vBUILDING vNOT vPROPERLY vIDENTIFIED v? v- vanswer-NO
WHAT vTYPE vOF vVALVE vIS vBEST vDESCRIBED vAS vA vVALVE vTHAT vIS vENERGIZED
vON vA vCALL vFOR vHEAT vAND vDE-ENERGIZED vWHEN vTHE vDEMAND vFOR vHEAT vIS
vCOMPLETE v? v- vanswer-SOLENOID vVALVE
WHY vARE vSEPERATE vSIZING vTABLES vNEEDED vFOR vNATURAL vGAS vAND
vPROPANE v? v- vanswer-NATURAL vGAS vAND vPROPANE vHAVE vDIFFERENT
vPROPERTIES vAS vGASES
T/F? vA vFABRIC vSLING vIS vRECOMMENDED vIN vAN vEXPLOSIVE vATMOSPHERE v-
vanswer-FALSE
REGARDING vSTEEL vPIPING, vWHAT vARE vTHE vREQUIREMENTS vFOR vJOINTS v? v-
vanswer-FLANGED, vWELDED vOR vTHREADED
WHEN vDOING vWELDING vWORK vON vGAS vPIPING vWHAT vTYPE vOF vGLOVES vARE
vREQUIRED v? v- vanswer-GAUNLET vTYPE
, T/F? vALL vNON-UTILITY vGAS vPIPING vAND vTUBING vOPERATES vABOVE vGROUNG v-
vanswer-FALSE
WHEN vSERVICING vOR vINSTALLING vA vGAS vAPPLIANCE, vWHAT vSECTIONS vOF
vTHE vMANUFACTURE'S vMANUAL vMUST vBE vREAD v? v- vanswer-ALL vOF vIT
T/F? vFOR vLARGE vGAS vPIPES vTHE vNORMAL vPURGE vVELOCITY vIS v150 vFT/MIN v-
vanswer-FALSE
WHEN vGAS vPIPING vOR vTUBING vIS vINSTALLED vTHROUGH vCONCRETE vWHAT
vSOULD vTHE vGAS vTECHNICIAN vDO vTO vTHE vTUBING vOR vPIPING vUSED v? v- vanswer-
DOUBLE vWRAP, vSLEEVE vOR vCOAT vTHE vPIPING vOR vTUBING vBEING vUSED
THE vWIDTH vOF vA vROOT vGAP vWHEN vWELDING vPIPE vAND vFITTINGS vIS v? v- vanswer-
1/16 vINCH vTO v1/8 vINCH
WHAT vIS vTHE vFOURTH vPROCEDURAL vSTEP vWHEN vSIZING vGAS vPIPING v? v-
vanswer-SIZE vPIPE vSECTIONS
T/F? vFOR vRIGGING vAND vHOISTING vA vSYMMETRICAL vLOAD vIS vAN vOBJECT vTHAT
vHAS vA vUNIFORM vSHAPE vAND vA vCENTRE vOF vGRAVITY vLOCATED vEXACTLY vIN
vTHE vMIDDLE v- vanswer-TRUE
WHAT vIS vTHE vDANGER vWHEN vGAS vPIPING vIS vNOT vPROPERLY vPURGED v? v-
vanswer-ACCIDENTAL vEXPLOSION vOF vA vGAS-AIR vMIXTURE vOUTSIDE vAND
vINSIDE vTHE vPIPE
REGARDING vREGULATOR vARRANGMENTS, vWHEN vIS vTWO vSTAGE vREGULATION
vREQUIRED? v- vanswer-ON vALL vPERMANENT vPROPANE vINSTALLATIONS
T/F? vA vRELIEF vVALVE vHAS vA vRESTRICTING vELEMENT vAS vA vTYPE vOF
vOVERPRESSURE vPROTECTION v- vanswer-TRUE
WHAT vMETHOD vIS vTHE vUSED vTO vDETERMINE vHOW vMANY vB.T.U.'s vPER vHOUR vA
vGAS vAPPLIANCE vUSES? v- vanswer-CLOCKING vTHE vGAS vMETER
A vCYLINDER vTHAT vHAS vA vMAXIMUM vCAPACITY vOF v420# vOF vLIQUID vPROPANE
vHAS vA vCAPACITY vOF vHOW vMANY vPOUNDS vOF vWATER? v- vanswer-1000
WHAT vIS vTHE vCAUSES vTHE vDOWNSTREAM vPRESSURE vIN vA vREGULATOR
vDECREASES v? v- vanswer-FLOW vRATE vINCREASES
IN vA vREGULATOR vWHAT vIS vTHE vDIAPHRAM vREFERRED vTO vAS v? v- vanswer-THE
vMEASURING vELEMENT
