An ideal gas of mass 0.5 kg has a pressure of 600 kPa, a temperature of 77 and a volume of 0.08 m3. This gas undergoes an irreversible process to a final pressure of 600 kPa and final volume of 0.12 m3, during which the heat addition and work done on gas are 2 kJ and 30 kJ respectively. The value of Cv of gas is
Which of the following represents the perpetual motion of the first kind
A closed system is one in which ____.
Which of the following statements are TRUE with respect to heat and work? (i) They are boundary phenomena (ii) They are exact differentials (iii) They are path functions
What is the velocity of steam (in m/sec) at exit across a steam whistle which is perfectly insulated and does not perform any work and undergoes a drop of 0.2 kJ/kg in enthalpy from entry to exit?
In an internal combustion engine, during the compression stroke the heat rejected to the cooling water is 50 kJ/kg and the work input is 100 kJ/kg. What is the change in internal energy of the working fluid ?
A closed gaseous system undergoes a reversible constant pressure process at 2 bar in which 100 kJ of heat is rejected and the volume changes from 0.2 m3 to 0.1 m3. The change in the internal energy of the system is
For a system of ideal gas, in a reversible isothermal process the heat transferred to the system is 0.75 kW. The internal energy at the initial point is 2.05 kJ/s. Determine the work done during the process.
When the heat transfer into a system is Greater than the work transfer out of the system, then
Calculate the net heat interaction (kJ) for the cycle shown in the figure.