The absolute percentage error in the computed discharge over a rectangular weir corresponding to an absolute error of 1.5% in the measurement of head over the sill of the weir would be
For a rectangular weir
∴ For an error of 1.5% in measurement of head, corresponding error in discharge = 1.5 × 1.5 = 2.25%
The head over a V-notch at the end of a channel is 75 cm. If an error of 0.15 cm is possible In the measurement of the head, then the percentage error in computing the discharge is
The diameter of a wire as measured by a screw guage was found to be 0.026cm,0.028cm,0.029cm,0.027cm,0.024cm,0.027cm.Calculate 1)mean value of the diameter.2)mean absolute error.3)relative error.4)percentage error.Also express the result in terms of absolute and percentage error.