Which type of heat does not cause a change in temperature when added or removed?

Prepare for the 4th Class Power Engineering Exam. Study with multiple choice questions and explanations to get exam-ready. Enhance your understanding and pass with confidence!

Latent heat is the energy absorbed or released during a phase change of a substance, such as when ice melts into water or water boils into steam. This process occurs at a consistent temperature, meaning that while latent heat is transferred, there is no increase in the temperature of the substance. For instance, when ice is heated at a constant temperature, it remains at 0°C until all the ice has melted, despite the addition of heat. The energy is used to change the state rather than increase the temperature.

In contrast, sensible heat refers to the heat that causes a change in temperature of a substance without changing its state. When sensible heat is added to water, for instance, the temperature of the water will rise. Specific heat relates to the amount of energy required to raise the temperature of a unit mass of a substance by one degree, further underscoring the concept that adding this type of heat changes the temperature.

Conduction heat is a mode of heat transfer where energy is transferred through direct contact between materials, and this also contributes to a change in temperature. Hence, latent heat is distinct because it directly correlates with phase transitions without affecting temperature, which makes it the correct answer in this context.

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