List of top Fluid Mechanics and Thermal Sciences Questions on Thermodynamic systems and processes asked in GATE ME

A furnace can supply heat steadily at 1200 K at a rate of 24000 kJ/min. The maximum amount of power (in kW) that can be produced by using the heat supplied by this furnace in an environment at 300 K is

A piston-cylinder arrangement shown in the figure has a stop located 2m above the base. The cylinder initially contains air at 140kPa and 350°C and the piston is resting in equilibrium at a position which is 1m above the stops. The system is now cooled to the ambient temperature of 25°C. Consider air to be an ideal gas with a value of gas constant R = 0.287kJ/(kg.K).
The absolute value of specific work done during the process is _____kJ/kg (rounded off to 1 decimal place)

At steady state, 500 kg/s of steam enters a turbine with specific enthalpy $h_1 = 3500\ \text{kJ/kg}$ and entropy $s_1 = 6.5\ \text{kJ . kg}^{-1}\text{K}^{-1}$. It expands reversibly in the turbine at 500 K. Exit properties: $h_2 = 2500\ \text{kJ/kg}$, $s_2 = 6.3\ \text{kJ . kg}^{-1}\text{K}^{-1}$. Find turbine work output (MW, integer).

A rigid tank (8 m$^3$) is filled with air from a pipeline at 600 kPa and 306 K. Heat loss during filling = 1000 kJ. Final tank pressure equals pipeline pressure. Final temperature is __________ K (rounded to nearest integer).

Which one of the following is an intensive property of a thermodynamic system?

Consider the open feed water heater (FWH) shown in the figure given below: Specific enthalpy of steam at location 2 is 2624 kJ/kg, specific enthalpy of water at location 5 is 226.7 kJ/kg and specific enthalpy of saturated water at location 6 is 708.6 kJ/kg. If the mass flow rate of water entering the open feed water heater at location 5 is 100 kg/s then the mass flow rate of steam at location 2 will be $\underline{\hspace{2cm}}$ kg/s (round off to one decimal place).