Monthly Quizzes 

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Engineering Software is pleased to announce the introduction of free short energy conversion quizzes. 

 

Here is a free short energy conversion quiz for the month of August -- when you are ready, take the free short energy conversion quiz for the month of August:

In general, how does an increase in the compression pressure ratio impact the specific power input?
      a) The compression specific power input decreases accordingly.
      b) The compression specific power input increases accordingly.
      c) The compression specific power input first increases and then it decreases accordingly.
      d) The compression specific power input is not dependent on an increase in the compression pressure ratio.  
In general, for a given compression pressure ratio, how does an increase in the working fluid mass flow rate impact the compression power input?
      a) The compression power input decreases accordingly.
      b) The compression power input increases accordingly.
      c) The compression power input first increases and then it decreases accordingly.
      d) The compression power input is not dependent on an increase in the working fluid mass flow rate.
What is the specific heat value for carbon dioxide?
      a) The carbon dioxide specific heat value is:  2,092 [J/kg*K].
      b) The carbon dioxide specific heat value is:  845 [J/kg*K].  
      c) The carbon dioxide specific heat value is:  1,004 [J/kg*K].  
      d) The carbon dioxide specific heat value is:  1,038 [J/kg*K].
In general, how does an increase in the expansion pressure ratio impact the specific power output?
      a) The expansion specific power input decreases accordingly.
      b) The expansion specific power input increases accordingly.
      c) The expansion specific power input first increases and then it decreases accordingly.
      d) The expansion specific power input is not dependent on an increase in the compression pressure ratio.
In general, for a given expansion pressure ratio, how does an increase in the working fluid mass flow rate impact the expansion power output?
      a) The expansion power input decreases accordingly.
      b) The expansion power input increases accordingly.
      c) The expansion power input first increases and then it decreases accordingly.
      d) The expansion power input is not dependent on an increase in the working fluid mass flow rate.

Please note that early next month, September, Engineering Software will post the correct answers to the above free short energy conversion quiz questions for the month of August!

For the month of July, free short energy conversion quiz correct answers are as follows:

What is the coal higher heating value?
      The coal higher heating value is approximately 14,000 [Btu/lbm].
When coal reacts with standard air, what is the stoichiometric oxidant to fuel ratio value?
      Coal stoichiometric oxidant to fuel ratio value is:  10.487 [/].
When coal reacts with standard air, what is the combustion products flame temperature?
      The combustion products flame temperature is:  2,484 [K].
What is the nitrogen enthaply at standard reference conditions where the temperature is 298 [K] and the pressure is 1 [atm]?
      The nitrogen enthalpy is:  0 [kJ/kg*K].
Which of the following species: carbon dioxide, sulfur dioxide, water vapor has the largest molecular weight?
      Sulfur dioxide has the largest molecular weight.

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Last Update:  August, 2020