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Irrigation Engineering

Irrigation Engineering
A 6 hours storm had 4 cm of rainfall and the resulting runoff was 2 cm. If<="" div="">

4.5 cm
9.0 cm
7.5 cm
6.0 cm

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Irrigation Engineering
Instantaneous unit hydrograph is a hydrograph of
i) unit duration
ii) unit rainfall excess
iii) infinitely small duration
iv) infinitely small rainfall excess
The correct answer is

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

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Irrigation Engineering
The length of a meander is the distance along the river between the tangent point of one curve to the tangent point of

Next curve of the same order
None of these
Reverse curve plus the width of the river
Reverse curve

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Irrigation Engineering
Solution of Laplacian equation in three dimensions d²φ/dx² + d²φ/dy² + d²φ/dz² = 0 of water in a syphon, is done by

Unwin's method
Khosla's method
Method of relaxation
Analytical method

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Irrigation Engineering
The saturation line is the line up to which banks get saturated after the canal runs for some time. The saturation gradient in ordinary loam soil, is generally

0.12569444444444
0.20902777777778
0.084027777777778
0.16736111111111

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Irrigation Engineering
When the reservoir is full, the maximum compressive force in a gravity dam is produced

at centre of base
at the toe
within the middle third of base
at the heel

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