4th Class Power Engineering 4A11 Practice Test

To determine the saturation temperature of water at a given pressure, one can refer to steam tables or saturation temperature charts. At 100 kPag (which is equivalent to approximately 14.5 psi), the saturation temperature of water is higher than the typical boiling point at atmospheric pressure (100 °C or 212 °F).

When examining the saturation temperature for water at 100 kPag, one finds that the correct value is around 120 °C. This means that at this pressure, water will exist as a liquid at 120 °C, and it will start to form steam when heated beyond this point.

Understanding this concept is crucial for power engineering, particularly in systems involving boilers and steam generation, where precise temperature and pressure readings are essential for safe and efficient operation.

The other options represent temperatures that do not correspond to the saturation point at this specific pressure, reinforcing the importance of consulting reliable thermodynamic data when assessing phase changes in water.