Electricity in humid vs. dry air?

[canuck111]

Why would an electric device (lets say a widget maker which creates widgets by using air and trace elements inside the widget maker and is connected to electric power to produce widgets) use less electricity per widget produced in a humid environment like houston rather then a dry one like flagstaff?

 

[russ_watters]

Dunno - might depend on what the device is doing rather than the conditions the motor is spinning in. I don't know that I've ever seen a motor with a temperature vs efficiency curve.