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### Monthly Quizzes

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 March:

What is the molecular weight value for hydrogen?
a) The hydrogen molecular weight value is:  32 [kg/kmol].
b) The hydrogen molecular weight value is:  12 [kg/kmol].
c) The hydrogen molecular weight value is:  28 [kg/kmol].
d) The hydrogen molecular weight value is:  2 [kg/kmol].
What is the hydrogen higher heating value?
a) The hydrogen higher heating value is approximately 60,000 [Btu/lbm].
b) The hydrogen higher heating value is approximately 12,000 [Btu/lbm].
c) The hydrogen higher heating value is approximately 21,000 [Btu/lbm].
d) The hydrogen higher heating value is approximately 4,000 [Btu/lbm].
When hydrogen reacts with standard air, what is the stoichiometric oxidant to fuel ratio value?
a) Hydrogen stoichiometric oxidant to fuel ratio value is:  10.487 [/].
b) Hydrogen stoichiometric oxidant to fuel ratio value is:   34.333 [/].
c) Hydrogen stoichiometric oxidant to fuel ratio value is:  11.444 [/].
d) Hydrogen stoichiometric oxidant to fuel ratio value is:   17.167 [/].
When hydrogen reacts with standard air, what is the combustion products flame temperature?
a) The combustion products flame temperature is:  1,972 [K].
b) The combustion products flame temperature is:  2,525 [K].
c) The combustion products flame temperature is:  2,460 [K].
d) The combustion products flame temperature is:  2,484 [K].
What is the hydrogen enthaply at standard reference conditions where the temperature is 298 [K] and the pressure is 1 [atm]?
a) The hydrogen enthalpy is:  10,000 [kJ/kg*K].
b) The hydrogen enthalpy is:  -10,000 [kJ/kg*K].
c) The hydrogen enthalpy is:  -20,000 [kJ/kg*K].
d) The hydrogen enthalpy is:  0 [kJ/kg*K].

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

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

What is the kappa value for argon?
The argon kappa value is:  1.67 [/].
What is the gas constant value for argon?
The argon gas constant value is:  2,078.5 [J/kg*K].
What is the specific heat value for argon in?
The argon specific heat value is:  519 [J/kg*K].
What is the ideal Brayton Cycle efficiency dependent on?
The ideal Brayton Cycle efficiency is dependent on the compression ratio and the working fluid physical properties.
For the ideal Brayton Cycle, how does an increase in the working fluid mass flow rate for the fixed gas turbine inlet temperature
and compression ratio values impact the power output?
As the working fluid mass flow rate increases, the Brayton Cycle power output increases accordingly.

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