1.

Which of the following expressions correctly represents the relationship between cross-sectional area of a nozzle, fluid velocity and specific volume?

A. ( frac{dA}{A}+ frac{dC}{C}= frac{dv}{v} )
B. ( frac{dA}{A}- frac{dC}{C}= frac{dv}{v} )
C. ( frac{dA}{A}+ frac{dC}{C}+ frac{dv}{v} ) = 0
D. ( frac{dA}{A}+ frac{dv}{v}= frac{dC}{C} )
Answer» B. ( frac{dA}{A}- frac{dC}{C}= frac{dv}{v} )


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