Solve this multiple-choice question and choose the correct option.

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Boiler draught: source of natural draught Identify the device that produces natural draught for combustion air and flue gas movement in steam boilers. Choose the correct option.

Difficulty: Easy

Steam jet
Centrifugal fan
Chimney
Both (a) and (b)

Correct Answer: Chimney

Explanation:

ConceptNatural draught is created by the density (temperature) difference of hot flue gases and outside air, using the static head of a chimney. Mechanical draught uses fans or steam jets.

Final AnswerChimney

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