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GATE CE 2020: Hydrology & Irrigation Quiz 8
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Question 1
An unlined canal is designed for a discharge of 12 m3/s. If the silt factor is 1 and the width of canal is 10 m, then the scour depth as per Lacey's formula is _________m.
Question 2
Wetted perimeter of a regime channel for a discharge of 64 cumecs as per Lacey's theory will be___m.
Question 3
A channel designed by Lacey’s theory has a velocity of 0.88 m/sec. The silt factor is 1.1. Then hydraulic mean depth will be
Question 4
Consider a wide rigid-boundary canal with bed slope of 0.004, Manning‘s n = 0.18 and depth of flow 0.88m. the average boundary shear stress
Question 5
A weir on a permeable foundation with downstream sheet is shown in figure below, then the gradient as per Khosla’s method is 1 in _____.
Question 6
What is the regime scour depth for a channel in soil with silt factor 1.3 and carrying 8.2 m3/s/m of discharge intensity in accordance with Lacey’s regime theory?
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Aug 12ESE & GATE CE
