Question

The loss of head in the converging portion of a horizontal venturimeter is 2.5% of the differential head. What is the meter coefficient of discharge

• A. 0.975
• B. 0.987
• C. 0.962
• D. 0.956

Answer 1

The correct option is B 0.987

$h_f=h(1-C{D}^2)\left(or\right)C{D}^2=1-\frac{hf}{h}$

$C{D}^2=1-\frac{2.5}{100}=0.0975$

$CD=\sqrt{0.0975}=0.9875$