Question

The hydraulic diameter of an annulus of inner and outer radii Rᵢ and R₀ respectively is

a.

4(R₀-Rᵢ)

b.

√(R₀-Rᵢ)

c.

2(R₀-Rᵢ)

d.

R₀ + Rᵢ

Answer: (c).2(R₀-Rᵢ)

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Q. The hydraulic diameter of an annulus of inner and outer radii Rᵢ and R₀ respectively is

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