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Home ‣ Mechanical Engineering ‣ Thermodynamics Comments
  • Question

  • One reversible heat engine operates between 1600 K and T2 K and another reversible heat engine operates between T2 K and 400 K. If both the engines have the same heat input and output, then temperature T2 is equal to


  • Options
  • A. 800K
  • B. 1000K
  • C. 1200K
  • D. 1400K

  • Correct Answer
  • 800K 

    • Thermodynamics problems

    Search Results

    • 1. The temperature at which the volume of a gas becomes zero is called

    • Options
    • A. absolute scale of temperature
    • B. absolute zero temperature
    • C. absolute temperature
    • D. none of these
      • Discuss
    • 2. A process, in which the gas is heated or expanded in such a way that product of its pressure and volume remains constant, is called isothermal process.

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 3. Boyle's law states that change of internal energy of a perfect gas is directly proportional to the change of temperature.

    • Options
    • A. Agree
    • B. Disagree
      • Discuss
    • 4. The efficiency of a gas turbine is given by

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 5. In closed cycle gas turbine, the air is compressed

    • Options
    • A. isothermally
    • B. isentropically
    • C. polytropically
    • D. none of these
      • Discuss
    • 6. The work ratio of a gas turbine plant is given by

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 7. Coke oven gas is obtained by burning coke in an oven.

    • Options
    • A. Agree
    • B. Disagree
      • Discuss
    • 8. One m3 of methane (CH4) requires 2m3 of oxygen and produces 1m3 of carbon dioxide and 2m3 of water or steam.

    • Options
    • A. Correct
    • B. Incorrect
      • Discuss
    • 9. The variables which control the physical properties of a perfect gas are

    • Options
    • A. pressure exerted by the gas
    • B. volume occupied by the gas
    • C. temperature of the gas
    • D. all of these
      • Discuss
    • 10. The reading of the pressure gauge fitted on a vessel is 25 bar. The atmospheric pressure is 1.03 bar and the value of 'g' is 9.81 m/s2. The absolute pressure in the vessel is

    • Options
    • A. 23.97 bar
    • B. 25 bar
    • C. 26.03 bar
    • D. 34.81 bar
      • Discuss

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