A partially open sluice gate is suddenly raised to its full opening. The resulting surge waves at the gate are

a positive wave travels from the gate onto the upstream side while a positive wave travels downstream from the gate

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a positive wave travel towards the gate from the upstream side while a negative wave travels downstream from the gate

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a negative wave travels from the gate onto the upstream side while a positive wave travels downstream form the gate

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a negative wave travels towards the gate from the upstream side whereas a positive wave travels downstream from the gate

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Solution

The correct option is C a negative wave travels from the gate onto the upstream side while a positive wave travels downstream form the gate
Positive wave travels downstream from gate as it results in increase in depth of flow and negative wave travels from gate onto upstream as it results in decrease in depth of flow.

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Similar questions

\frac{1}{2 \sqrt{2}}

C_{c} = 0.9

g

10 m / s^{2}

A. Resting phase	Activation gates of $N a^{+}$ open
B. Depolarizing phase	Inactivation gates open only
C. Repolarizing phase	Inactivation gate and activation gate of $N a^{+}$ is closed
D. Hyperpolarising phase	Both gates of $N a^{+}$ open

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