What will be the effect if a refrigeration cycle contains moisture?

The correct answer is option "1".

Explanation:
In a refrigeration system, the capillary tube (or expansion valve) is a crucial component responsible for regulating the flow of the refrigerant from the high-pressure side (condenser) to the low-pressure side (evaporator). The capillary tube has a narrow diameter, and the refrigerant passes through it at high pressure.

When moisture is present in the refrigeration system, it can lead to several issues:

Ice Formation: Moisture can freeze and form ice within the capillary tube due to the low temperatures encountered in the expansion process. As ice accumulates, it reduces the effective diameter of the capillary tube.

Choking Effect: The formation of ice inside the capillary tube acts as a restriction, limiting the flow of refrigerant. This restriction can result in a significant drop in the flow rate of the refrigerant, leading to decreased system efficiency.

Decreased Cooling Capacity: As the capillary tube chokes due to ice formation, the flow of refrigerant to the evaporator is hindered. This reduces the amount of refrigerant reaching the evaporator coil, leading to a decrease in the system's cooling capacity.

System Imbalance: The choking effect in the capillary tube can cause an imbalance in the pressure and temperature distribution across the refrigeration system, affecting its overall performance.