Engineering Board Exam Reviewer · Fluid Mechanics · easy

An ideal fluid is one that is:

  1. Compressible and viscous
  2. Incompressible and highly viscous
  3. Incompressible and has zero viscosity
  4. Has constant temperature

Answer

C. Incompressible and has zero viscosity

Solution

An ideal (perfect) fluid is frictionless (inviscid) and incompressible — a useful idealization.

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