# The top width and the depth of flow in a triangular channel were measured as $4 \mathrm{~m}$ and $1 \mathrm{~m}$, respectively. The measured velocities on the centre line at the water surface, $0.2 \mathrm{~m}$ and $0.8 \mathrm{~m}$ below the surface are $0.7 \mathrm{~m} / \mathrm{s}, 0.6 \mathrm{~m} / \mathrm{s}$ and $0.4 \mathrm{~m} / \mathrm{s}$, respectively. Using two-point method of velocity measurement, the discharge (in $\mathrm{m}^{3} / \mathrm{s}$ ) in the channel is (A) 1.4 (B) 1.2 (C) 1.0 (D) 0.8

## Question ID - 155788 :- The top width and the depth of flow in a triangular channel were measured as $4 \mathrm{~m}$ and $1 \mathrm{~m}$, respectively. The measured velocities on the centre line at the water surface, $0.2 \mathrm{~m}$ and $0.8 \mathrm{~m}$ below the surface are $0.7 \mathrm{~m} / \mathrm{s}, 0.6 \mathrm{~m} / \mathrm{s}$ and $0.4 \mathrm{~m} / \mathrm{s}$, respectively. Using two-point method of velocity measurement, the discharge (in $\mathrm{m}^{3} / \mathrm{s}$ ) in the channel is (A) 1.4 (B) 1.2 (C) 1.0 (D) 0.8

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Group I contains parameters and Group II lists methods/instruments.
Group I $\quad$ Group II
P. $\quad$ Streamflow velocity           1. $\quad$ Anemometer
Q. $\quad$ Evapo-transpiration rate    2. Penman's method
$\begin{array}{ll}\text { R. } & \text { Infiltration rate }\end{array}$  3. Horton's method
S. $\quad$ Wind velocity                      4. Current meter
The CORRECT match of Group I with Group II is
(A) $P-1, Q-2, R-3, S-4$
(B) $\mathrm{P}-4, \mathrm{Q}-3, \mathrm{R}-2, \mathrm{~S}-1$
(C) $\mathrm{P}-4, \mathrm{Q}-2, \mathrm{R}-3, \mathrm{~S}-1$
(D) $\mathrm{P}-1, \mathrm{Q}-3, \mathrm{R}-2, \mathrm{~S}-4$