Discharge Over Triangular Notch or Weir

Q. $\text{The discharge over a}{90}^{\circ }\text{V-notch is given as}Q=1.37H^{\frac{5}{2}}{\text{, where Q is in m}}^3\text{/s and H in m, the}{C}_d\text{of the notch is}$

1. 0.611
2. 0.580
3. 0.464
4. 0.710

Q.
The discharge through a V-notch varies

1. Proportional to head (H)
2. $\text{Inversely proportional to angle}\theta$
3. $\text{Proportional to}{H}^{\frac{5}{2}}$
4. $\text{Inversely proportional to}\tan \frac{\theta }{2}$

Q. While conducting the flow measurement using at triangular notch, an error 2% in head over the notch is observed. The percentage error in the computed discharge would be

1. +7%
2. -3%
3. +5%
4. -4%

Q.

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

1. 0.25

2. 0.5

3. 0.75

4. 1.0