For each of the following statement choose T True or F False

For each of the following statement, choose \"T\" (True) or \"F\" (False), or \"U\" (Undetermined). If your answer is \"U\", please state your reasons. Quality can be defined as the ratio of the volume of gas to the total volume. A heat engine with a 100% efficiency is impossible to build because it violates the first law of thermodynamics. Entropy generation is a state property. An ideal gas at a given state expands to a fixed final volume first at constant pressure and then at constant temperature. The boundary work of the former is greater than that of the latter. Internal energy is an extensive property, while enthalpy per unit mass is an intensive property. The COP of a refrigerator is always greater than 1. If a process is adiabatic and reversible, then it is isentropic. Entropy per unit mass and specific heat have the same dimension. The equation du = c_vdT holds for a constant volume process, but not for a constant pressure process. The mass is constant in a closed system. It is also constant in a steady -flow control volume.

Solution

1.false .Ratio of masses

2.false.Violates 2nd law

3.False

4.False.Boundary work during constant temperature is more in expansion

5.True

6.False .COP can be greater than 1

7.True.Isentropic is reversible adiabiatic

8.True

9.True

10.True.Mass is constant i.e mass enters to system and mass exits the system are same

5.