HSTATIONARY ENGINEER VOCABULARY
100% SOLVED QUESTIONS AND
ANSWERS
accumulation test - test used to establish the relieving capacity of boiler safety valves
air atomizing burner - inside-mixing fuel oil burner that uses compressed air from an air compressor for
atomization
air flow switch - safety device used with rotary cup burners. prevents firing cycle from starting if there is
no primary air at the burner
alkali - compound that contains hydroxide, such as sodium hydroxide and calcium hydroxide
analog-in (AI)point - remotely located sensor that has a continuously varying signal that bears a known
relationship to the value of the measured variable
analog-out(AO)point - remotely located device that receives a continuously varying signal from the
computer and reacts to that signal to control equipment.
analog signal - data that is sent about the status of pressure, humidity, airflow, voltage or resistance
anion - solution with negatively charged ions
axial clearance - distance between the nozzle exits and leading edge of the rotor blades in an impulse
steam turbine
, barometric condenser - condenser that has steam and water mixing together, similar to an open
feedwater heater
bin storage system - pulverized coal system where coal is prepared in a separate space and stored in a
raw coal bunker
anthracite coal - hard coal with a high fixed carbon content
bituminous coal - soft coal with a high volatile content
blowdown - drop in pressure that allows the safety valve to close
blowdown centrifugal separator - separator that reduces the pressure and temperature before the boiler
water enters the blowdown tank
boolean programming - method of programming that uses boolean logic operators such as AND,OR and
NOT to control circuit function.
breeching - duct connecting boiler to chimney. carries products of gases of combustion from boiler to
chimney
calcium carbonate - found in raw water. causes scale to form in boiler drum when heat is added. caustic
soda is added to turn it into a nonadhering sludge.
calorimeter - used to measure heating value of a fuel
capacitor start and run motor - single phase motor that has separate start and run capacitors for high
starting torque
capacitor start motor - single phase motor that has a capacitor placed in series with the starting windings
100% SOLVED QUESTIONS AND
ANSWERS
accumulation test - test used to establish the relieving capacity of boiler safety valves
air atomizing burner - inside-mixing fuel oil burner that uses compressed air from an air compressor for
atomization
air flow switch - safety device used with rotary cup burners. prevents firing cycle from starting if there is
no primary air at the burner
alkali - compound that contains hydroxide, such as sodium hydroxide and calcium hydroxide
analog-in (AI)point - remotely located sensor that has a continuously varying signal that bears a known
relationship to the value of the measured variable
analog-out(AO)point - remotely located device that receives a continuously varying signal from the
computer and reacts to that signal to control equipment.
analog signal - data that is sent about the status of pressure, humidity, airflow, voltage or resistance
anion - solution with negatively charged ions
axial clearance - distance between the nozzle exits and leading edge of the rotor blades in an impulse
steam turbine
, barometric condenser - condenser that has steam and water mixing together, similar to an open
feedwater heater
bin storage system - pulverized coal system where coal is prepared in a separate space and stored in a
raw coal bunker
anthracite coal - hard coal with a high fixed carbon content
bituminous coal - soft coal with a high volatile content
blowdown - drop in pressure that allows the safety valve to close
blowdown centrifugal separator - separator that reduces the pressure and temperature before the boiler
water enters the blowdown tank
boolean programming - method of programming that uses boolean logic operators such as AND,OR and
NOT to control circuit function.
breeching - duct connecting boiler to chimney. carries products of gases of combustion from boiler to
chimney
calcium carbonate - found in raw water. causes scale to form in boiler drum when heat is added. caustic
soda is added to turn it into a nonadhering sludge.
calorimeter - used to measure heating value of a fuel
capacitor start and run motor - single phase motor that has separate start and run capacitors for high
starting torque
capacitor start motor - single phase motor that has a capacitor placed in series with the starting windings
