top of page

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

What is the coal higher heating value?
a) The coal higher heating value is approximately 60,000 [Btu/lbm].
b) The coal higher heating value is approximately 14,000 [Btu/lbm].
c) The coal higher heating value is approximately 21,000 [Btu/lbm].
d) The coal higher heating value is approximately 4,000 [Btu/lbm].
When coal reacts with standard air, what is the stoichiometric oxidant to fuel ratio value?
a) Coal stoichiometric oxidant to fuel ratio value is:  10.487 [/].
b) Coal stoichiometric oxidant to fuel ratio value is:   4.292 [/].
c) Coal stoichiometric oxidant to fuel ratio value is:  11.444 [/].
d) Coal stoichiometric oxidant to fuel ratio value is:  17.167 [/].
When coal 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 nitrogen enthaply at standard reference conditions where the temperature is 298 [K] and the pressure is 1 [atm]?
a) The nitrogen enthalpy is:  10,000 [kJ/kg*K].
b) The nitrogen enthalpy is:  -10,000 [kJ/kg*K].
c) The nitrogen enthalpy is:  -20,000 [kJ/kg*K].
d) The nitrogen enthalpy is:  0 [kJ/kg*K].
Which of the following species:  carbon dioxide, sulfur, sulfur dioxide and water vapor has the largest molecular weight?
a) Carbon dioxide has the largest molecular weight.
b) Sulfur has the largest molecular weight.
c) Sulfur dioxide has the largest molecular weight.
d) Water vapor has the largest molecular weight.

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

For the month of June, free short energy conversion quiz correct answers are as follows:
What is the kappa value for nitrogen?
The nitrogen kappa value is:  1.4 [/].
What is the molecular weight value for nitrogen?
The nitrogen molecular weight value is:  28 [kg/kmol].
What is the specific heat value for nitrogen?
The nitrogen specific heat value is:  1,038 [J/kg*K].
What is the ideal Diesel Cycle efficiency dependent on?
The ideal Diesel Cycle efficiency is dependent on the compression volumetric ratio, cut off ratio and the working fluid physical
properties.
For the ideal Diesel Cycle, how does an increase in the working fluid mass flow rate impact the power output?
As the working fluid mass flow rate increases, the Diesel Cycle power output increases accordingly.

bottom of page