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## Homework Statement

It was a standard venturi meter experiment where we calculated the theoretical and actual mass flow rates for different pressures and velocity's. the follow up questions were:

-Compare the results of the coefficient of discharge obtained with typical values given in BS.

-Comment on the results for the percentage pressure loss

-Comment on the probable sources of any errors in your results

## Homework Equations

my problem is not with the maths or equations but the ones used were the standard for mass flow rate and the coefficient of discharge. also:

pressure loss (%) = 100(P1-P11)/P1

## The Attempt at a Solution

I have completed all the equations and found that both the coefficient of discharge and the percentage pressure loss decrease as the mass flow rate decreases and i was just wondering what the scientific reason for this was?

can anyone help?