PIPE Thermodynamics pt.10

Is a measure of the energy that is no longer available to perform useful work within the current environment.

• absolute entropy

• absolute enthalpy

• fugacity

• molar value

When hot soup was served in a cup during dinner an engineer was so eager to drink it. Since it was hot, he added cubes of ice to cool the soup and stirred it. He noticed that dew starts to from on the outermost surface of the cup. What is this temperature equal to?

• superheated temperature

• equal to zero

• standard temperature

• equal to air's dew point temperature

A graph of enthalpy versus entropy for steam.

• mollier diagram

• moody diagram

• steam table

• maxwell diagram

the following are included in the first law of thermodynamics for closed system EXCEPT:

• heat transferred in and of the system

• work done by or on the system

• internal energy

• kinetic energy

The combination of conditions that best describes a thermodynamic process is given by which of the following?

I. Has successive states through which the system passes.

II. When reversed leaves no change in the system.

III. When reversed leaves no change in the system or the surroundings.

IV. States are passes through so quickly that the surroundings do not change.

• I and II

• I and III

• I and IV

• I only

The sum of the energies of all the molecules in a system where energies appear in several complex forms is the ___.

• kinetic energy

• potential energy

• internal energy

• frictional energy

The Carnot refrigeration cycle includes all of the following process except ___.

• isentropic expansion

• isothermal heating

• isenthalpic expansion

• isentropic compression

The maximum possible work that can be obtained a cycle operating between two reservoirs is found from :

• process irreversibility

• availability

• carnot efficiency

• reversible work

The following factors are necessary to define a thermodynamic cycle except ___.

• the working substance

• high and low temperature reservoirs

• the time it takes to complete the cycle

• the means of doing work on the system

All of the following term included in the second law for open system except ___.

• shaft work

• flow work

• internal energy

• average work