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chemical engineering process equipment and plant design
1. To keep the power input constant for a stirred vessel operating under fully developed turbulent flow conditions (constant power number), if the impeller diameter is increased by 20%, the impeller speed should be decreased by a factor of
(A): (1.2)2/3
(B): (1.2)3/2
(C): (1.2)3/5
(D): (1.2)5/3
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