A steel billet of 2000 kg mass is to be cooled from 1250 K to 450 K. The heat released during this process is to be used as a source of energy. The ambient temperature is 303 K and the specific heat of steel is 0.5 kJ/kg.K the available energy of this billet is A. 490.44 MJ B. 30.95 MJ C. 10.35 MJ

Availability of a system at any given state is ______ A. A property of the system B. The maximum work obtainable as the system goes to a dead state C. The total energy of the system D. The maximum useful work is obtainable as the system goes to a dead state

A gas expands in a frictionless piston-cylinder arrangement. The expansion process is very slow and is resisted by an ambient pressure of 100 kPa. During the expansion process, the pressure of the system (gas) remains constant at 300 kPa. The change in volume of the gas is 0.01 m^3. The maximum amo

At a place where the surroundings are at 1 bar 27 C, a closed rigid thermally insulated tank contains 2 kg air at 2 bar, 27 C. This air is then churned for a while by a paddle wheel connected to an external motor. If it is given that the irreversibility of the process is 100 kJ, find the final tempe

The pressure, temperature and velocity of air flowing in a pipe are 5 bar, 500 K and 50 m/s, respectively. The specific heats of air at constant pressure and at constant volume are 1.005 kJ/kgK and 0.718 kJ/kgK, respectively. Neglect potential energy. If the pressure and temperature of the surroundi