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

dQ/Q = (1/2) × (dH/H)
dQ/Q = (dH/H)
dQ/Q = (3/2) × (dH/H)
dQ/Q = (3/4) × (dH/H)

ANSWER DOWNLOAD EXAMIANS APP

Hydraulics and Fluid Mechanics in ME
In a reaction turbine, the draft tube is used

To increase the head of water by an amount equal to the height of the runner outlet above the tail race
To run the turbine full
To prevent air to enter the turbine
To transport water to downstream

ANSWER DOWNLOAD EXAMIANS APP