Reference no: EM132247700

Questions -

Question 1: The adiabatic enthalpy drop across the prime mover of the Rankine cycle is 750 kJ/kg. The enthalpy of steam supplied is 2250 kJ/kg. If the back pressure is 0.1 bar and the corresponding h_f from the tables is 300 kJ/kg, determine the thermal efficiency.

Question 2: The following equation is one of the cubic equations of state

P = RT/(v-b) - a/(v²+cbv+db²)

Rewrite this equation if the gas in consideration is an ideal gas.

Question 3: One kg of CO2 has a volume of 1 m³ at 127^oC. Compute the pressure by the perfect gas equation.

Question 4: The Clapeyron equation of state provides a relationship between which combination of the following thermodynamic properties?

A. Temperature

B. Specific volume

C. Pressure

D. Enthalpy

E. Entropy

Question 5: When the Joule-Thomson coefficient, μ_JT is negative during a throttling process, what does it mean regarding temperature change?

Question 6: The four Maxwell relations for simple compressible mass provide relationships between which combination of the following thermodynamic properties?

A. Temperature

B. Specific volume

C. Pressure

D. Enthalpy

E. Entropy

Question 7: As p tends to zero at fixed T, the compressibility factor tends to what?

Question 8: Which of the following statements is true of the expression pv/ZT if Z is the compressibility factor, T is the temperature, v^- is the specific volume and p is pressure.

A. It is specific for every gas.

B. It is the same for all gases only when pressure is zero.

C. It is different for all gases all the time.

D. It is the same for all gases at all conditions.