Irrigation Engineering
The level of the floor of a syphon aqueduct can be obtained

Both (a) and (b)
By subtracting the thickness of culvert plus the depth of the culvert from the canal bed level
By subtracting the depth of the culvert from the canal bed level
None of these

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Irrigation Engineering
Lacy's regime condition is obtained if

Channel flows in unlimited, incoherent alluvium of the same character as that transported material
Silt grade in the channel is variable
Silt charge in the channel is variable
Discharge in the channel is variable

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Irrigation Engineering
In a syphon aqueduct

Canal passes over the drainage and H.F.L. of the drainage is below the bottom of the canal trough
Drainage passes over the canal and F.S.L. of the canal is above the bottom of the drainage trough
Drainage passes over the canal and F.S.L. of the canal is below the bottom of the drainage trough
Canal passes over the drainage and H.F.L. of the drainage is above the bottom of the canal trough

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