In a reversible cycle, the entropy of the system

Related MCQs

• According to entropy principle, the entropy of an isolated system can never decrease and remains constant only when the process is reversible.
• The entropy increase due to internal irreversibility is also called entropy production or entropy generation.
• For any reversible process, the change in entropy of the system & surroundings is
• One reversible heat engine operates between 1600 K & T₂ K & another reversible heat engine operates between T₂ K & 400 K. If both the engines have the temperature T₂ must be equal to
• For a reversible adiabatic process, the change in entropy is
• Carnot cycle is a reversible cycle.
• 1.6 Kg of air is expanded at constant pressure from 100°C to 0°C resulting in entropy change of - 2.0 J/K 3.2 Kg of air is cooled at constant volume from 100°C to 0°C with a change in entropy of -3.0 J/K. The ratio Cp/ Cv is
• The rate of entropy increase of the control volume          or          the net rate of entropy transfer to it.
• The rate at which entropy is transferred out must          the rate at which entropy enters the control volume.
• A heat engine is supplied with 250 kJ/s of heat at a constant fixed temperature of 227°C. The heat is rejected at 27°C. The cycle is reversible, if the amount of heat rejected is