A thermostatic expansion valve is properly controlling evaporator superheat. Adjusting this valve to lower the evaporator superheat setting will result in which of the following?

Correct Answer: Option C — the evaporator feed will increase

Decreasing the superheat setting reduces spring opposing force on the thermostatic expansion valve diaphragm, causing the valve to open wider, increase refrigerant feed to the evaporator, and lower the resulting superheat value.