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Irrigation Engineering

Irrigation Engineering
The stream which does not have any base flow contribution is called

perennial stream
ephemeral stream
intermittent stream
None of these

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Irrigation Engineering
Lacey's equation for calculating flood discharge in rivers, is

V = 10.8 R2/3 S1/2
V = 10.8 R1/2 S1/2
V = 10.8 R2/3 S1/3
V = 10.8 R1/3 S2/3

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Irrigation Engineering
Hydrodynamic pressure due to earthquake acts at a height of

3H/4π below the water surface
3H/4π above the base
4H/3π above the base
4H/3π below the water surface, where H is the depth of water

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Irrigation Engineering
For the stability of a structure against seepage pressure according to Khosla's creep theory, the critical gradient is

1
0.25
Zero
0.5

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Irrigation Engineering
The structure constructed to allow drainage water to flow under pressure through an inverted syphon below a canal, is called

Syphon aqueduct
Super-aqueduct
Super passage
Syphon

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Irrigation Engineering
In a chute spillway, the flow is usually

subcritical
super critical
critical
uniform

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