Railways Technical Ability Turbomachinery Question Bank Turbomachinery

  • question_answer Consider the following statements:
    Blowdown is necessary on boilers, because
    1. The boiler water level is lowered rapidly in case it accidentally rises too high.
    2. The precipitated sediment or sludge is removed while the boiler is in service.
    3. The concentration of suspended solids in the boiler is controlled.
    Of these statements:

    A) 1, 2 and 3 are correct

    B) 1 and 2 are correct

    C) 3 alone is correct   

    D) 1 and 3 are correct

    Correct Answer: C

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