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While calibrating a venturi meter in a pipeline, which consequence develops from underestimated fluid viscosity within the Bernoulli equation?

A)Overestimation of flow rate readings
B)Underestimation of pressure drop expected
C)Unexplained meter instability develops suddenly
D)Increased measurement noise significantly appears

💡 Explanation

Underestimated viscosity leads to an underestimated friction term in the energy balance, causing the calculated pressure difference to suggest a higher flow rate. Because the assumed flow rate is higher, therefore it overestimates the true flow, rather than showing pressure decreases.

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