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 March -- when you are ready, take the free short energy conversion quiz for the month of April:

What is the kappa value for helium?
      a) The helium kappa value is:  1.66 [/].
      b) The helium kappa value is:  1.67 [/].
      c) The helium kappa value is:  1.32 [/].
      d) The helium kappa value is:  1.4 [/].
What is the gas constant value for helium?
      a) The helium gas constant value is:  286.7 [J/kg*K].
      b) The helium gas constant value is:  2,078.5 [J/kg*K].
      c) The helium gas constant value is:  280.1 [J/kg*K].
      d) The helium gas constant value is:  296.9 [J/kg*K].
What is the specific heat value for helium in [J/kg*K]?
      a) The helium specific heat value is:  2,092 [J/kg*K].
      b) The helium specific heat value is:  5,200 [J/kg*K].  
      c) The helium specific heat value is:  1,004 [J/kg*K].  
      d) The helium specific heat value is:  1,038 [J/kg*K].
What is the ideal Otto Cycle efficiency dependent on?
      a) The ideal Otto Cycle efficiency is dependent on the compression pressure ratio.
      b) The ideal Otto Cycle efficiency is dependent on the compression volumetric ratio.
      c) The ideal Otto Cycle efficiency is dependent on the compression volumetric ratio and the working fluid physical properties.
      d) The ideal Otto Cycle efficiency is dependent on the working fluid physical properties.
For the ideal Otto Cycle, how does an increase in the working fluid mass flow rate impact the power output?
      a) As the working fluid mass flow rate increases, the Otto Cycle power output decreases accordingly.
      b) As the working fluid mass flow rate increases, first the Otto Cycle power output increases accordingly and then it decreases.
      c) As the working fluid mass flow rate increases, the Otto Cycle power output increases accordingly.
      d) The working fluid mass flow rate change has no impact on the power output.

 

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

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

What is the molecular weight value for hydrogen?
      The hydrogen molecular weight value is:  2 [kg/kmol].
What is the hydrogen fuel higher heating value?
      The hydrogen higher heating value is approximately 60,000 [Btu/lbm].
When hydrogen reacts with standard air, what is the stoichiometric oxidant to fuel ratio value?
      Hydrogen stoichiometric oxidant to fuel ratio value is:  34.333 [/].
When hydrogen reacts with standard air, what is the combustion products flame temperature?
      The combustion products flame temperature is:  2,525 [K].
What is the hydrogen enthaply at standard reference conditions where the temperature is 298 [K] and the pressure is 1 [atm]?
      The hydrogen enthalpy is:  0 [kJ/kg*K].

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Last Update:  April, 2020