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Mechanical Engineering :: Thermodynamics

  1. According to Kelvin-Planck's statement, a perpetual motion of the __________ is impossible.

  2. A.

     First kind

    B.

     Second kind

    C.

     Third kind

    D.

     None of these


  3. The efficiency of Stirling cycle is __________ Carnot cycle.

  4. A.

     Greater than

    B.

     Less than

    C.

     Equal to

    D.

     None of these


  5. The efficiency of Ericsson cycle is __________ Carnot cycle.

  6. A.

     Greater than

    B.

     Less than

    C.

     Equal to

    D.

     None of these


  7. The efficiency of the dual combustion cycle for the same compression ratio is __________ Diesel cycle.

  8. A.

     Greater than

    B.

     Less than

    C.

     Equal to

    D.

     None of these


  9. For the same compression ratio, the efficiency of Diesel cycle is __________ Otto cycle.

  10. A.

     Greater than

    B.

     Less than

    C.

     Equal to

    D.

     None of these


  11. Diesel cycle consists of __________ processes.

  12. A.

     Two constant volume and two isentropic

    B.

     Two constant pressure and two isentropic

    C.

     Two constant volume and two isothermal

    D.

     One constant pressure, one constant volume and two isentropic


  13. When coal is strongly heated continuously for 42 to 48 hours in the absence of air in a closed vessel, the process is known as __________ of fuel.

  14. A.

     Atomization

    B.

     Carbonization

    C.

     Combustion

    D.

     None of these


  15. The throttling process is __________ process.

  16. A.

     Reversible

    B.

     Irreversible

    C.

     Reversible or irreversible

    D.

     None of these


  17. The atomic mass of nitrogen is __________ oxygen.

  18. A.

     Equal to

    B.

     Less than

    C.

     More than

    D.

     None of these


  19. A tri-atomic molecule consists of __________ atoms.

  20. A.

     Three

    B.

     One

    C.

     Two

    D.

     Four