Two pipes, each of diameter d, converge to form a pipe of diameter D. – McqOptions

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1.	Two pipes, each of diameter d, converge to form a pipe of diameter D. What should be the relation between d and D such that the flow velocity in the third pipe becomes double of that in each of the two pipes?
A.	D = d
B.	D = 2d
C.	D = 3d
D.	D = 4d
Answer» B. D = 2d

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