Railways NTPC (Technical Ability) Theory of Machines and Machine Design Question Bank Theory of Machines

  • question_answer
    Pertaining to a steam boiler, which of the following statements is correct?

    A) Primary boiler heat transfer surface Includes evaporator section, economizer and air preheater

    B) Primary boiler heat transfer surface includes evaporator section, economizer and superheater section

    C) Secondary boiler heat transfer surface includes superheater, economizer and air preheater

    D) Primary boiler heat transfer surface includes evaporator section, superheater section and reheat section

    Correct Answer: D

    Solution :

    Primary boiler heat transfer surface includes evaporator section, economizer and air- preheater.


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