HVAC NATE Gas Heat Exam (New 2024/ 2025 Update) Questions and Verified Answers 100% Correct | A Grade

HVAC NATE Gas Heat Exam (New 2024/ 2025 Update) Questions and Verified Answers 100% Correct | A Grade QUESTION A damaged section of double wall vent pipe is to be replaced with a section produced by a different manufacturer: Answer: The installer should check the new section for compatible locking joints. QUESTION If too much primary air is used the flame will: Answer: Lift off the burner. QUESTION What is the problem when a flame on a high efficiency gas furnace is burning primarily yellow: Answer: The flame is burning without sufficient combustion air. QUESTION The cause of a voltage reading across a closed contact in a 24V control circuit is: Answer: Pitted or dirty contacts. QUESTION The following are the first two checks typically made on an electronic control: Answer: Presence of any on board transformer voltage. Proper output voltage. QUESTION During a service call on a unit the technician finds that the wiring diagram is missing from the access panel. The technician may begin troubleshooting by: Answer: Tracing the circuits either mentally or on a sketch pad. QUESTION The first check made for most electrical troubleshooting is a: Answer: Voltage check of the supply line. QUESTION The test to be used to check the wiring and connections to the terminals of an energized blower motor is a: Answer: Voltage test. QUESTION The following conditions exist in a circuit that supplies power to three parallel loads. Answer: The total current in the circuit when operating will be the sum of the currents