Nora Bronze Practice Test with Actual Answers Graded A+
what's the best way to clear a clogged oil line? push-pull hand pump
what three functions do oil pumps preform? move oil from tank to burner, prevent
dirt/sludge from clogging pump, remove air when piped as two-line system
rule of thumb for calculating vacuum: 1" for 1' vertical lift. 1" for 10' horizontal run
if the vacuum is below calculation you may have what? suction line leak
if the vacuum is above calculation you may have what? suction line restriction/clogged
can a leak in the oil line pull in air without oil leaking? yes
a two stage pump is needed when you... have a high lift and a long run
what are the two benefits to a one pipe system eliminates worry's of leaking return lines,
decreases frequency of replacing oil filters
a two pipe system can move ___ gallons of fuel thru the oil filter 15
, pulsating oil pump pressure and pulsating fame may be caused by? air leaks in the suction
line
the three purposes of an oil burner nozzle are to? atomize the oil, provide pattern of oil
spray, meter the amount of oil burned
the flow rate stamped on the nozzle is based on what pump pressure? 100 psi
what can we do to reduce the effect of cold oil? increase pressure and decrease nozzle
size. install nozzle line pre-heater. use additives or kerosene.
what are the three main causes for after drip? air in the nozzle line, a defective regulating
valve, oil expansion in the nozzle
the size of the nozzle and the oil pressure will determain what? BTU input (firing rate)
reflecting heat upon the flame vaporizes the oil droplets and helps... the combustion
process
the flame coming in contact with the sides or back of the combustion chamber is
called... impingement
what's the best way to clear a clogged oil line? push-pull hand pump
what three functions do oil pumps preform? move oil from tank to burner, prevent
dirt/sludge from clogging pump, remove air when piped as two-line system
rule of thumb for calculating vacuum: 1" for 1' vertical lift. 1" for 10' horizontal run
if the vacuum is below calculation you may have what? suction line leak
if the vacuum is above calculation you may have what? suction line restriction/clogged
can a leak in the oil line pull in air without oil leaking? yes
a two stage pump is needed when you... have a high lift and a long run
what are the two benefits to a one pipe system eliminates worry's of leaking return lines,
decreases frequency of replacing oil filters
a two pipe system can move ___ gallons of fuel thru the oil filter 15
, pulsating oil pump pressure and pulsating fame may be caused by? air leaks in the suction
line
the three purposes of an oil burner nozzle are to? atomize the oil, provide pattern of oil
spray, meter the amount of oil burned
the flow rate stamped on the nozzle is based on what pump pressure? 100 psi
what can we do to reduce the effect of cold oil? increase pressure and decrease nozzle
size. install nozzle line pre-heater. use additives or kerosene.
what are the three main causes for after drip? air in the nozzle line, a defective regulating
valve, oil expansion in the nozzle
the size of the nozzle and the oil pressure will determain what? BTU input (firing rate)
reflecting heat upon the flame vaporizes the oil droplets and helps... the combustion
process
the flame coming in contact with the sides or back of the combustion chamber is
called... impingement
