Railways Technical Ability Refrigeration and Air-Conditioning Question Bank Refrigeration and Air-Conditioning

  • question_answer Consider the following statements:
    1. In Freon 22 system, moisture choking generally does not occur
    2. Freon 11 is mainly used in large capacity air- conditioning plants with centrifugal compressors.
    3. Presence of lubricating oil in evaporator will increase the heat transfer coefficient.
    4. Refrigerants that are completely miscible with oil, do not cause oil choking.
    Of these statements:

    A) 1, 2 and 3 are correct

    B) 1, 2 and 4 are correct

    C) 2, 3 and 4 are correct

    D) 1, 3 and 4 are correct

    Correct Answer: A

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