Railways NTPC (Technical Ability) Thermodynamics Question Bank Thermodynamics

  • question_answer
    Which of the following statements are associated with second law of thermodynamics
    1. When a system executes a cyclic process, network transfer is equal to net heat transfer.
    2. It is impossible to construct an engine, that operating in a cycle will produce no other effect than the extraction of heat from a reservoir and performance of an equivalent amount of work.
    3. It is impossible by any procedure, no matter how idealized, to reduce any system the absolute zero of temperature in a finite number of operations
    4. It is impossible to construct a device that operating in a cycle will produce no effect other than transfer of heat from a cooler to hotter body.
    Select the correct answer using the codes given below:

    A) 1, 2 and 4                     

    B) 2 and 4

    C) 2, 3 and 4                     

    D) 2 and 3

    Correct Answer: C


You need to login to perform this action.
You will be redirected in 3 sec spinner