The kinematic viscosity of a fluid is defined as the ratio of its dynamic viscosity to its:
Correct answer: B. Density
- A. Specific weight
- B. Density
- C. Specific gravity
- D. Bulk modulus
Explanation
Kinematic viscosity is ν = μ/ρ, where μ is dynamic viscosity and ρ is density. Specific weight is related to density through gravity, but it is not the defining denominator.
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Hydraulics studies fluid properties, pressure, buoyancy, continuity, Bernoulli's equation, momentum, pipe flow, open-channel flow and hydraulic machines. Water resources extends these principles to pumps, turbines, reservoirs, irrigation, floods and hydrology, while distinguishing laminar from turbulent flow and uniform from gradually varied channel flow.
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