When the sensing bulb of a thermostatic expansion valve is charged with a fluid different from the charge used in the system, what name of the charge is associated with the power element?

Correct Answer: Option C — cross charged

A cross-charged thermal expansion valve utilizes a power element fluid that has different pressure-temperature characteristics than the system refrigerant. This design provides a limiting characteristic to prevent excessive evaporator operating pressures during high load warm-up periods.