In a fire tube boiler, what flows inside the tubes while the surrounding medium is water?

Mechanical Engineering Mcqs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

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Subject
Mechanical Engineering Mcqsmechanical-engineering-mcqs
Published
29 Jan 2019
Last updated
28 May 2026

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Choose the correct answer

Explanation

In fire tube boilers, the hot flue gases move through the tubes, which are immersed in water. This design allows heat transfer from the gases to the water. Option A correctly describes this process, whereas option B describes a water tube boiler. Options C and D do not specifically define fire tube boilers.

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