Irrigation Engineering
A hydraulic jump is generally formed when a stream moving with

A hyper-critical velocity meets a stream moving with a sub-critical velocity
A hyper-critical velocity meets a stream moving with a critical velocity
A hyper-critical velocity meets a stream moving with a hyper-critical velocity
A sub-critical velocity meets a stream moving with a hyper-critical velocity

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Irrigation Engineering
As per Lacey’s theory, the silt factor is

not related to average particle size
directly proportional to square root of average particle size
inversely proportional to average par¬ticle size
directly proportional to average par¬ticle size

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