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  • Question

  • Select the wrong statement


  • Options
  • A. A Joule cycle consists of two constant volume and two isentropic processes.
  • B. An Otto cycle consists of two constant volume and two isentropic processes.
  • C. An Ericsson cycle consists of two constant pressure and two isothermal processes.
  • D. all of the above

  • Correct Answer
  • A Joule cycle consists of two constant volume and two isentropic processes. 

    • Thermodynamics problems

    Search Results

    • 1. 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
    • 2. 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
    • 3. 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
    • 4. Coke oven gas is obtained by burning coke in an oven.

    • Options
    • A. Agree
    • B. Disagree
      • Discuss
    • 5. The work ratio of a gas turbine plant is given by

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 6. One kg of hydrogen requires 8 kg of oxygen and produces

    • Options
    • A. 1 kg of water
    • B. 7 kg of water
    • C. 8 kg of water
    • D. 9 kg of water
      • Discuss
    • 7. The absolute zero pressure will be

    • Options
    • A. when molecular momentum of the system becomes zero
    • B. at sea level
    • C. at the temperature of - 273 K
    • D. at the centre of the earth
      • Discuss
    • 8. In an extensive property of a thermodynamic system

    • Options
    • A. extensive heat is transferred
    • B. extensive work is done
    • C. extensive energy is utilised
    • D. none of these
      • Discuss
    • 9. An open system is one in which

    • Options
    • A. heat and work crosses the boundary of the system, but the mass of the working substance does not crosses the boundary of the system
    • B. mass of the working substance crosses the boundary of the system but the heat and work does not crosses the boundary of the system
    • C. both the heat and work as well as mass of the working substance crosses the boundary of the system
    • D. neither the heat and work nor the mass of the working substance crosses the boundary of the system
      • Discuss
    • 10. Workdone during adiabatic expansion is given by (where p1 v1, T1 = Pressure, volume and temperature for the initial condition of gas, p2, v2, T2 = Corresponding values for the final condition of gas, R = Gas constant, and ? = Ratio of specific heats)

    • Options
    • A.
    • B.
    • C.
    • D. all of these
      • Discuss

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