ASSACHUSETTS OIL BURNER LICENSE NEWEST 2025 ACTUAL EXAM TEST BANK 350 QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)

ASSACHUSETTS OIL BURNER LICENSE NEWEST
2025 ACTUAL EXAM TEST BANK 350
QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS)

ASSACHUSETTS OIL BURNER LICENSE NEWEST
2025 ACTUAL EXAM TEST BANK 350
QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS)

To reduce combustion problems caused by cold oil - CORRECT
ANSWER✔✔ Increase the pump pressure, install a nozzle line
pre-heater, and use additives or kerosene to lower viscosity


Nozzle after trip can be caused by - CORRECT ANSWER✔✔ a
defective pressure regulating valve, air in the nozzle line, and oil
expansion in the nozzle after shut down


The flow rate stamped on the nozzle is based on: - CORRECT

ANSWER✔✔ 100 PSI


A proper combustion chamber: - CORRECT ANSWER✔✔ Is
large enough so the fire doesn't touch (impinge on) any
surface, The cross connection between two supply tanks shall
not exceed? - CORRECT ANSWER✔✔ 660 gallons

,ASSACHUSETTS OIL BURNER LICENSE NEWEST
2025 ACTUAL EXAM TEST BANK 350
QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS)

When is an automatic draft control not required? - CORRECT
ANSWER✔✔ When the equipment is designed to control the
draft.


Combustion performance testing can indicate: - CORRECT
ANSWER✔✔ Improper air oil mixture, too much combustion air,
and low pump pressure.


If a second oil-burning appliance is installed in a single chimney,
you must insure: - CORRECT ANSWER✔✔ Sufficient draft is
available for safe operation of all connected equipment.


Delayed ignition can be caused by: - CORRECT ANSWER✔✔
Weak ignition transformer


You should replace the oil burner nozzle with: - CORRECT
ANSWER✔✔ The manufacturers recommended nozzle spray
pattern and spray angle.

, ASSACHUSETTS OIL BURNER LICENSE NEWEST
2025 ACTUAL EXAM TEST BANK 350
QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS)

Viscosity problems can be corrected by: - CORRECT ANSWER✔✔
Decreasing the nozzle size and increasing the pump pressure
accordingly


The minimum operating pressure of an oil pump is: - CORRECT

ANSWER✔✔ 100 PSI


If a stack relay fails you, must? - CORRECT ANSWER✔✔ Replace
it with an approved type controller


Aquastats are normally found on what type of heating systems?
-

CORRECT ANSWER✔✔ Hydronic


Airstats are found on what type of heating systems? - CORRECT

ANSWER✔✔ Forced warm air systems


Under sized returns on a warm air system can result in what? -

CORRECT ANSWER✔✔ Short cycling of the oil burner