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GATE ME 2022: Thermodynamics (App update required to attempt this test)
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Question 1
3kg of steam at 120 °C and 1 atm is mixed with 25kg of water at ambient temperature of 25 °C. Calculate the irreversibility (in kJ) produced if the steam condenses at 100 °C with Latent heat of condensation as 2260 kJ/kg. Specific heat of steam is 1.99kJ/kgK.
Question 2
An adiabatic turbine receives a gas at 5 bar and 1000 °C and discharges at 1.2 bar and 670 °C.The second law efficiency (in percentage ) of the turbine is ____.
(cp= 1.09 kJ/kgK, cv= 0.815 kJ/kgK and neglect any change in kinetic and potential energy).
Take, To= 300K
(cp= 1.09 kJ/kgK, cv= 0.815 kJ/kgK and neglect any change in kinetic and potential energy).
Take, To= 300K
Question 3
1 kg of ethane is enclosed in a rigid container having 7 liters of volume and is maintained at a temperature of 300K. The pressure of gas in the container is 19.25MPa. The compressibility factor Z is _____
Question 4
A heat engine working between high thermal reservoir and low thermal reservoir. Ratio of temperature of high thermal reservoir to low thermal reservoir 5/3. If the same reservoir is used to maintain a space at lower temperature. Then COP of this new system will be
Question 5
The weight placed on the steam exhaust port of a domestic pressure cooker never allows the pressure to build up above 250 KPa inside the cooker. The latent heat of vaporization of water is 2257 kJ/Kg at 100 °C and 101.325 KPa. The temperature ( °C) at which water boils in the cooker is
Question 6
In an adiabatic process 4000 J of work is performed on a system. In the nonadiabatic process by which the system returns to its original state 1000J of heat is added to the system. What is the work done during non-adiabatic process?
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