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Civil Engineering - Irrigation

Exercise : Irrigation - Section 3
16.
Effective precipitation for a crop may be defined as
total precipitation minus the loss due to evaporation
total precipitation minus the loss due to infiltration
total precipitation during the crop period
available water stored in soil within root zone of the crop.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
If average particle size of the silt in millimetres is m, the Lacey's silt factor f is proportional to
m
m3
m1/2
m1/3
m2/3
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
Lane's weighted creep theory assumes
equal weightage to horizontal and vertical creeps
double weightage to horizontal creep and one weightage to vertical creep
triple weightage to horizontal creep and one weightage to vertical creep
triple weightage to vertical creep and one weightage to horizontal creep
double weightage to vertical creep and one weightage to horizontal creep.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
Disposal of extra excavated earth of canals, is utilised to provide a spoil bank on
left side
right side
both sides
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
If A is the area of the surface, x is the depth of its C.G. from the surface of the water and ω is the density of water, then
total pressure on the surface is equal to ω x
depth of the point at which total pressure acts is equal to its moment of inertia divided by A x
depth of the centre of pressure is 2/3H vertically below the surface
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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