Irrigation Engineering
Study the following statements.
i) Levees are constructed parallel to river flow,
ii) Spurs are constructed parallel to river flow,
iii) Levees are constructed transverse to river flow,
iv) Spurs are constructed transverse to river flow.
The correct answer is

(iii) and (iv)
(i) and (ii)
(i) and (iv)
(ii) and (iii)

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Irrigation Engineering
As per Lacey’s theory, the silt factor is

directly proportional to average par¬ticle size
directly proportional to square root of average particle size
inversely proportional to average par¬ticle size
not related to average particle size

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Irrigation Engineering
A hydraulic jump is generally formed when a stream moving with

A hyper-critical velocity meets a stream moving with a sub-critical velocity
A hyper-critical velocity meets a stream moving with a critical velocity
A sub-critical velocity meets a stream moving with a hyper-critical velocity
A hyper-critical velocity meets a stream moving with a hyper-critical velocity

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Irrigation Engineering
Bligh's theory of seepage assumes

Loss of head follows the sine curve
Less weightage to horizontal creep than vertical creep
Equal weightage to the horizontal and vertical creep
More weightage to horizontal creep than vertical creep

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