High pressure steam is expanded adiabatically and reversibly through a well insulated turbine, which produces some shaft work. If the enthalpy change and entropy change across the turbine are represented by ΔH and ΔS respectively for this process ?

Related Mcqs:

During adiabatic expansion of gas___________________?

A. Pressure remains constant B. Pressure is increased C. Temperature remains constant D. None of these...

An isolated system can exchange ______________ with its surroundings?

A. Matter B. Energy C. Neither matter nor energy D. Both matter and energy...

The second law of thermodynamics states that___________________?

A. The energy change of a system undergoing any reversible process is zero B. It is not possible to transfer heat from a lower temperature to a higher temperature C. The total energy of system and surrounding remains the same D. None of the above...

Helmholtz free energy A. is defined as____________________?

A. A = H – TS B. A = E – TS C. A = H + TS D. None of these...

As the temperature is lowered towards the absolute zero, the value of the quantity (∂ΔF/∂T) approaches________________?

A. Zero B. Unity C. Infinity D. None of these...