Civil Engineering MCQAE Level Civil Engineering
In a venturimeter, the differential head measured between inlet and throat is used to compute discharge. The actual discharge Q_actual relates to theoretical Q_th as:
Fluid MechanicsVenturimeterMEDIUM
Choose the correct answer
A
Q_actual = Cd x Q_th
B
Q_actual = Q_th / Cd
C
Q_actual = Cd x sqrt(Q_th)
D
Q_actual = Q_th + Cd
Correct Answer
A. Q_actual = Cd x Q_th
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Q_actual = Cd x Q_th, where Cd = coefficient of discharge (typically 0.97-0.99 for venturimeters). It accounts for friction losses between inlet and throat.
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