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GATE ME 2022: Thermodynamics
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Question 1
Stirling and Ericsson cycles are
Question 2
The efficiency of a Carnot Engine depends on
Question 3
A 250 m3 rigid tank contains compressed air at 1 MPa and 300 K. If the environment conditions are 100 kPa and 300 K, then the maximum work (in MJ) that can be obtained from this air is
Question 4
In an ideal vapour compression refrigeration cycle, the specific enthalpy of refrigerant (in kJ/kg) at the following states is given as:
Inlet of condenser: 283
Exit of condenser: 116
Exit of evaporator: 232
The COP of this cycle is
Inlet of condenser: 283
Exit of condenser: 116
Exit of evaporator: 232
The COP of this cycle is
Question 5
One kg of air (R = 287 J/kg-K) undergoes an irreversible process between equilibrium state 1 (20 °C , 0.9 m3) and equilibrium state 2 (20 °C, 0.6 m3) The change in entropy S2 - S1 (in J/kg-K) is_____?
Question 6
The temperature – entropy (T-S) diagram for steam power plant cycle is shown in fig. The capacity of steam power plant (in kg/KWh) is
The property values at different state are shown below in table:
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