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Irrigation Engineering

Irrigation Engineering
The net speed under which the turbine reaches its peak efficiency is called

rated speed
gross speed
design speed
operating speed

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Irrigation Engineering
Infiltration is the

movement of water through the soil
absorption of water by soil surface
None of these
both (A) and (B)

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Irrigation Engineering
According to Lacey, in regime conditions

Neither (a) nor (b)
Both (a) and (b)
Silt is kept in suspension by vertical components of eddies
Entire cross-section of the channel is generated at all points by the forces normal to the

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

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
Both (a) and (b)

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Irrigation Engineering
If d1 is the depth of cutting, d2 is the height of the bank from bed level r2 : 1 and r1 : 1 are the slopes in filling and cutting respectively, the horizontal distance n between the bed and bank, is

x = d2 / r2
x = r1 d1
x = d1 / r1
x = r2 d2

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Irrigation Engineering
The maximum permissible eccentricity for no tension at the base of a gravity dam is

B/2
B/3
B/6
B/4

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