List of top Water Resources Engineering Questions on Fluid statics asked in GATE CE

A flow velocity field \(\vec V:\vec V(x, y)\) for a fluid is represented by
\(\vec V = 3\hat i+ (5x)\hat j\)
In the context of the fluid and the flow, which one of the following statements is CORRECT?
For assessing the compliance with the emissions standards of incineration plants, a correction needs to be applied to the measured concentrations of air pollutants. The emission standard (based on 11% Oxygen) for HCl is 50 mg/Nm3 and the measured concentrations of HCl and Oxygen in flue gas are 42 mg/Nm3 and 13%, respectively.
Assuming 21% Oxygen in air, the CORRECT statement is:
Water is flowing in a horizontal, frictionless, rectangular channel. A smooth hump is built on the channel floor at a section and its height is gradually increased to reach choked condition in the channel. The depth of water at this section is \(y_2\) and that at its upstream section is \(y_1\). The correct statement(s) for the choked and unchoked conditions in the channel is/are