Massachusetts Oil Burner 2026-2027
Frequently Tested Exam Questions With
Verified Multiple Choice and Conceptual
Actual 100% Correct Detailed Answers
Guaranteed Pass!!Current Update!!
1. If fuel oil has a milky color, this is an indication of...? - ANSWER Water in
the oil
2. What effect does a drop in temperature have on fuel oil? - ANSWER
Raises viscosity
3. What is the recommended reading of a cad cell in the light? - ANSWER
less than 1600 ohms
4. What is the recommended reading of a cad cell in the dark? - ANSWER
20,000 ohms
5. What determines actual firing rate? - ANSWER Nozzle size and fuel unit
pressure
6. True or False - The higher the viscosity, the higher the firing rate - ANSWER
True
, 7. True or False - The higher the pump pressure, the better the atomization -
ANSWER True
8. How must an oil burner circuit be protected? - ANSWER 15 amp fuse or
breaker
9. How would you wire a line voltage thermostat on a steam boiler? - ANSWER
Series
10.What are 2 ways we test a stack switch? - ANSWER pull wire from #3,
kill motor
11.On a stack switch, what is the terminal 4 wired to? - ANSWER Ignition
12.If you have power on the black wire of a primary control and no power on
the orange wire, name 2 possible reasons - ANSWER Not calling for heat
or bad neutral
13.What is a cad cell and how does it work? - ANSWER A visual flame
detector that measures resistance
14.(800 ohms when running, 1600+ causes lockout)
15.The primary voltage of a step down transformer is....? - ANSWER 120
volts
Frequently Tested Exam Questions With
Verified Multiple Choice and Conceptual
Actual 100% Correct Detailed Answers
Guaranteed Pass!!Current Update!!
1. If fuel oil has a milky color, this is an indication of...? - ANSWER Water in
the oil
2. What effect does a drop in temperature have on fuel oil? - ANSWER
Raises viscosity
3. What is the recommended reading of a cad cell in the light? - ANSWER
less than 1600 ohms
4. What is the recommended reading of a cad cell in the dark? - ANSWER
20,000 ohms
5. What determines actual firing rate? - ANSWER Nozzle size and fuel unit
pressure
6. True or False - The higher the viscosity, the higher the firing rate - ANSWER
True
, 7. True or False - The higher the pump pressure, the better the atomization -
ANSWER True
8. How must an oil burner circuit be protected? - ANSWER 15 amp fuse or
breaker
9. How would you wire a line voltage thermostat on a steam boiler? - ANSWER
Series
10.What are 2 ways we test a stack switch? - ANSWER pull wire from #3,
kill motor
11.On a stack switch, what is the terminal 4 wired to? - ANSWER Ignition
12.If you have power on the black wire of a primary control and no power on
the orange wire, name 2 possible reasons - ANSWER Not calling for heat
or bad neutral
13.What is a cad cell and how does it work? - ANSWER A visual flame
detector that measures resistance
14.(800 ohms when running, 1600+ causes lockout)
15.The primary voltage of a step down transformer is....? - ANSWER 120
volts
