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Home Mechanical Engineering Thermodynamics Comments

  • Question
  • A process, in which the working substance neither receives nor gives out heat to its surroundings during its expansion or compression, is called


  • Options
  • A. isothermal process
  • B. hyperbolic process
  • C. adiabatic process
  • D. polytropic process

  • Correct Answer
  • adiabatic process 


  • Thermodynamics problems


    Search Results


    • 1. The ideal efficiency of simple gas turbine cycle depends upon pressure ratio.

    • Options
    • A. Yes
    • B. No
    • Discuss
    • 2. The universal gas constant (or molar constant) of a gas is the product of

    • Options
    • A. molecular mass of the gas and the gas constant
    • B. atomic mass of the gas and the gas constant
    • C. molecular mass of the gas and the specific heat at constant pressure
    • D. molecular mass of the gas and the specific heat at constant volume
    • Discuss
    • 3. The amount of heat required to raise the temperature of 1 kg of water through one Kelvin is called

    • Options
    • A. specific heat at constant volume
    • B. specific heat at constant pressure
    • C. kilo-Joule
    • D. none of these
    • Discuss
    • 4. A machine which violates the first law of thermodynamics is known as perpetual motion machine of the second kind.

    • Options
    • A. Correct
    • B. Incorrect
    • Discuss
    • 5. A closed cycle gas turbine works on Joule's cycle.

    • Options
    • A. True
    • B. False
    • Discuss
    • 6. The natural petroleum may be separated into

    • Options
    • A. petrol
    • B. kerosene
    • C. fuel oil
    • D. lubricating oil
    • Discuss
    • 7. A definite area or a space where some thermodynamic process takes place is known as

    • Options
    • A. thermodynamic system
    • B. thermodynamic cycle
    • C. thermodynamic process
    • D. thermodynamic law
    • Discuss
    • 8. The specific volume of a system is an __________ property.

    • Options
    • A. extensive
    • B. intensive
    • Discuss
    • 9. If in the equation pvn = C, the value of n = 1, then the process is called isothermal process.

    • Options
    • A. True
    • B. False
    • Discuss
    • 10. A cycle consisting of two constant pressure and two isothermal processes is known as Ericsson cycle.

    • Options
    • A. True
    • B. False
    • Discuss


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