NATE Gas Heating Exam TESTS WITH ANSWERS A+ GRADE.
The purpose of the gas pressure regulator is to:
A: Keep the color of the flame constant
B: Keep the high limit switch from tripping
C: Maintain a constant gas pressure at the burner
D: Allow the gas valve to operate smoothly and accurately - C: Maintain a constant gas pressure at the
burner
The instrument used to measure outlet gas pressure is the:
A: Velometer
B: Anemometer
C: Monometer
D: Draft gauge - C: Monometer
The regulator on a natural gas furnace should be adjusted to supply _____ inches of pressure at the
burners.
A: 11"
B: 10"
,C: 3.5"
D: 2" - C: 3.5"
Burning one cubic foot of natural gas releases approximately _____ btu.
A: 800
B: 1,050
C: 12,000
D: 15,000 - B: 1,050
Under ideal conditions natural gas has an ignition temperature of _______ degrees F and a burning
temperature of ________ degrees F.
A: 800 degrees, 1000 degrees
B: 1,100 degrees, 3,500 degrees
C: 1,100 degrees, 5,000 degrees
D: 2,500 degrees, 8,000 degrees - B: 1,100 degrees, 3,500 degrees
Propane and butane are both:
A: Lighter than air
B: Heavier than air
, C: Weigh the same as air
D: None of the above - B: Heavier than air
In order to achieve complete combustion with natural gas, each cubic foot of gas must combine with no
less than ______ cubic feet of air with an additional 5 cubic feet of extra air to ensure there is enough
oxygen for complete combustion.
A: 5 cubic feet
B: 10 cubic feet
C: 15 cubic feet
D: 20 cubic feet - B: 10 cubic feet
The three elements of combustion are:
A: Fuel, oxygen and ignition
B: Nitrogen, oxygen and heat
C: Air, fuel and oxygen
D: Air, fuel and nitrogen - A: Fuel, oxygen and ignition
Which of the following is a natural result of combustion?
A: Water vapor
B: Carbon monoxide
C: Carbon dioxide
The purpose of the gas pressure regulator is to:
A: Keep the color of the flame constant
B: Keep the high limit switch from tripping
C: Maintain a constant gas pressure at the burner
D: Allow the gas valve to operate smoothly and accurately - C: Maintain a constant gas pressure at the
burner
The instrument used to measure outlet gas pressure is the:
A: Velometer
B: Anemometer
C: Monometer
D: Draft gauge - C: Monometer
The regulator on a natural gas furnace should be adjusted to supply _____ inches of pressure at the
burners.
A: 11"
B: 10"
,C: 3.5"
D: 2" - C: 3.5"
Burning one cubic foot of natural gas releases approximately _____ btu.
A: 800
B: 1,050
C: 12,000
D: 15,000 - B: 1,050
Under ideal conditions natural gas has an ignition temperature of _______ degrees F and a burning
temperature of ________ degrees F.
A: 800 degrees, 1000 degrees
B: 1,100 degrees, 3,500 degrees
C: 1,100 degrees, 5,000 degrees
D: 2,500 degrees, 8,000 degrees - B: 1,100 degrees, 3,500 degrees
Propane and butane are both:
A: Lighter than air
B: Heavier than air
, C: Weigh the same as air
D: None of the above - B: Heavier than air
In order to achieve complete combustion with natural gas, each cubic foot of gas must combine with no
less than ______ cubic feet of air with an additional 5 cubic feet of extra air to ensure there is enough
oxygen for complete combustion.
A: 5 cubic feet
B: 10 cubic feet
C: 15 cubic feet
D: 20 cubic feet - B: 10 cubic feet
The three elements of combustion are:
A: Fuel, oxygen and ignition
B: Nitrogen, oxygen and heat
C: Air, fuel and oxygen
D: Air, fuel and nitrogen - A: Fuel, oxygen and ignition
Which of the following is a natural result of combustion?
A: Water vapor
B: Carbon monoxide
C: Carbon dioxide
