EPRI Heat Transfer & Fluid Flow Practice Test

Intensive properties are those that do not depend on how much material you have. They describe the state of a system per unit amount, so changing the size of the sample doesn’t change their values.

Viscosity measures how resistant a fluid is to shear and stays the same whether you have a cup or a tank of fluid. Thermal conductivity tells how well the material conducts heat, independent of the total amount. Specific volume is the volume per unit mass, which is fixed for a given material and does not scale with sample size. Pressure and temperature describe the current state of the system and, at a given state, remain unchanged if you change the amount of material.

Electrical resistance is listed as well, and while the actual resistance of a piece depends on its geometry, the material’s intrinsic electrical characteristic is described by resistivity, which is an intensive property. In the context of this classification, all of these properties are treated as intensive because they do not depend on the system’s size, making them the correct type of properties in this question.