Hydraulics and Fluid Mechanics in ME
The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a triangular notch is given by

dQ/Q = 2 × (dH/H)
dQ/Q = 3/2 × (dH/H)
dQ/Q = 3 × (dH/H)
dQ/Q = 5/2 × (dH/H)

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Hydraulics and Fluid Mechanics in ME
Which of the following is an incorrect statement ?

Coefficient of contraction of a venturimeter is unity
Discharge is independent of orientation of venturimeter whether it is horizontal, vertical or inclined
None of these
Flow nozzle is cheaper than venturimeter but has higher energy loss

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Hydraulics and Fluid Mechanics in ME
The hydraulic efficiency of a reaction turbine, is the ratio of

Power produced by the turbine to the energy actually supplied by the turbine
None of these
Work-done on the wheel to the energy (or head of water) actually supplied to the turbine
Actual work available at the turbine to energy imparted to the wheel

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