Irrigation Engineering
The aqueduct or superpassage type of works are generally used when

high flood drainage discharge is large and continues for a long time
None of these
high flood drainage discharge is large and short lived
high flood drainage discharge is small

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

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

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