a. The fluid is incompressible

b. The fluid is in steady-state

c. The is not affected by fluid flow

d. all of the above

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**ANSWER: d. all of the above**

u = velocity of the fluid entering the control volume

v = velocity of the fluid leaving the control volume

Considering above condition, the equation

(∂u / ∂x) + (∂v / ∂y) = 0

is known as

a. continuity equation for incompressible, steady, two dimensional flow

b. continuity equation for compressible, steady, two dimensional flow

c. continuity equation for incompressible, unsteady, two dimensional flow

d. continuity equation for incompressible, steady, three dimensional flow

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**ANSWER: a. continuity equation for incompressible, steady, two dimensional flow**

a. the result of powers acting on the surface of the control volume

b. the result of works acting on the surface of the control volume

c. the result of forces acting on the surface of the control volume

d. none of the above

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**ANSWER: c. the result of forces acting on the surface of the control volume**

a. (δ / x) = 5 / (Re

b. (δ / x) = 5 / (Re

c. (δ / x) = 10 / (Re

d. (δ / x) = 10 / (Re

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**ANSWER: a. (δ / x) = 5 / (Re _{x})^{(1/2)} **

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