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Thermodynamics Test - 18
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Thermodynamics Test - 18

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  • Question 1/10
    4 / -1
    The temperature-entropy diagram of a reversible engine cycle is given in the figure. Its efficiency is

    Solutions

  • Question 2/10
    4 / -1
    A uniform metal rod is used as a bar pendulum. If the room temp. rises by 10ºC and coefficient of linear expansion of the metal of the rod is 2 × 106 per ºC, the period of pendulum will increase by
    Solutions

  • Question 3/10
    4 / -1
    If the degrees of freedom of a gas molecule be f, then the ratio of two specific heats Cp/Cυ is given by
    Solutions

  • Question 4/10
    4 / -1
    A given system undergoes a change in which the work done by the system equals the decrease in its internal energy. The system must have undergone
  • Question 5/10
    4 / -1
    Fig. shows four PV diagrams. Which of these curves represent isothermal and adiabatic processes ?

  • Question 6/10
    4 / -1
    Fig. shows V‒T diagram for a gas heated at constant pressure. What happens to the mass of the gas when it goes from state 1 to state 2?

    Solutions

  • Question 7/10
    4 / -1
    An ideal gas is taken from state A to state B following three different paths as shown in P‒V diagram, Fig. Which one of the following is true?

    Solutions

  • Question 8/10
    4 / -1
    Fig. shows a thermodynamical process on one mole of a gas. How does the work done in the process change with time?

  • Question 9/10
    4 / -1
    A thermodynamical system is taken from state A to state B along ACB and is brought back to A along BDA as shown in Fig. Net work done during one complete cycle is given by area

  • Question 10/10
    4 / -1
    What is the nature of change in internal energy in the following three hermodynamical processes shown in Fig. ?

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