Irrigation Engineering
If L is total length of a canal in kilometers, P is total perimeter of its lining in metres and C is the cost of lining per square metre, the additional expenditure involved on lining, is

PC/100L
PLC/1000
PL/1000C
100 PLC

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

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

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