in Irrigation edited by
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Group I contains three broad classes of irrigation supply canal outlets, Group II presents hydraulic performance attributes.

$$\begin{array}{|ll|ll|} \hline {} & \text{Group I} & {} & \text{Group II} \\ \hline P. & \text{Non-modular outlet} & 1. & \text{Outlet discharge depends on the water levels in both the supply} \\ {} & {}& {} & \text{canal as well as the receiving water course} \\ \hline Q. & \text{Semi-modular} & 2. & \text{Outlet discharge is fixed and is independent of the water levels in} \\ {}& \text{outlet} & {}& \text{both the supply as well as the receiving water course} \\ \hline R.&  \text{Modular outlet} & 3. & \text{Outlet discharge depends on the water level in the supply canal } \\ \hline \end{array}$$

The correct match of the items in Group I with the items in Group II is

  1. $P – 1; \: Q – 2; \: R – 3$
  2. $P – 3; \: Q – 1; \: R – 2$
  3. $P – 2; \: Q – 3; \: R – 1$
  4. $P – 1; \: Q – 3; \: R – 2$
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