nate gas heating exam questions 20222023 | consisting of 50 questions with verified answers from experts
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NATE Gas Heating Exam Questions And Answers 2022/2023
1. Since 1992, the United States Department of Energy has required that
all furnaces sold and installed from that date on must have an AFUE of no
less than:
A: 70%
B: 75%
C: 78%
D: 80%: C: 78%
2. Many pre-1992
furnaces have efficiencies around .
A: 10%
B: 40%
C: 60%
D: 80%: C: 60%
3. Today, furnaces
, with AFUE ratings greater than are available.
A: 85%
B: 90%
C: 100%
D: 110%: B: 90%
4. A thermocouple is used with:
A: Intermittent pilot systems
B: Direct spark ignition
systems C: Glow coil ignition
systems
D: Standing pilot ignition systems: D: Standing pilot ignition systems
, 5. 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
6. The instrument used to measure outlet gas pressure is
the: A: Velometer
B: Anemometer
C: Monometer
D: Draft gauge: C: Monometer
7.
he 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"
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