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The ratio of the energy required to produce the artificial draught...

This question belongs to Mechanical Engineering Steam Boilers, Engines, Nozzles And Turbines
Steam Boilers, Engines, Nozzles and Turbines
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The ratio of the energy required to produce the artificial draught (expressed in meters head or J/kg of flue gas) to the mechanical equivalent of extra heat carried away per kg of flue gases due to natural draught, is known as

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Correct Answer: Option B
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