G2 Gas Fitter Exam 2025 – 400 Free Practice Questions to Pass the Exam

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What is the primary purpose of a forced draft burner?

To improve thermal efficiency

To enhance combustion air supply

The primary purpose of a forced draft burner is to enhance combustion air supply. This type of burner operates by using a fan to draw in air and force it into the combustion chamber. By increasing the quantity and improving the velocity of the air supplied for combustion, the burner ensures that the fuel burns more completely and efficiently. This results in better combustion efficiency and reduced emissions since the optimal air-to-fuel ratio can be maintained.

This configuration is particularly important in applications where the burning conditions need to be controlled tightly, such as in industrial processes or larger heating systems. Enhanced air supply from a forced draft burner helps achieve consistent and reliable combustion, which is necessary for optimal performance and safety in gas-fired systems.

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To cool the combustion process

To stabilize gas pressure

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