Consider the following statements regarding standing wave flume:
(i) It is a critical depth flume.
(ii) To calculate the discharge, two-gauge readings, one at upstream and other at the throat is computed.
(iii) Discharge through the flume depends only on the downstream water level.
(iv) Discharge through the flume is proportional to H3/2.
Which of the following statements are correct?1
(i) and (iv) only
2
(i) and (iii) only
3
(ii), (iii) and (iv) only
4
(i), (iii) and (iv) only