| 1. | The free board in a channel is governed by the ? | |
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water surface fluctuations
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location of the canal
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size of the canal
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all of these
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Report Question| 2. | Which of the following satement is correct ? | |
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Lacey introduced semi-ellipse as ideal shape of a regime channel
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Lacey properly define the silt grade and silt charge
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In Lacey's silt theory, the derivation of the various formulae depends upon a single factor
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Lacey's equation includes a concentration of silt as variable
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| 3. | The cylinder or well fall is quite suitable and economical for ? | |
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high discharges and high drops
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high discharges and low drops
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low discharges and low drops
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low discharges and high drops
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| 4. | Which of the salt present in water is harmful for cultivation purposes ? | |
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Calcium sulphate
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Potassium sulphate
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Sodium carbonate
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none of these
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| 5. | A canal aligned at right angles to the contour of a country, is known as ? | |
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contour canal
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side slope canal
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branch canal
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water shed canal
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| 6. | For closed growing crops (such wheat), the method of irrigation used is ? | |
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basin flooding
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check flooding
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free flooding
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border flooding
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| 7. | The irrigation is necessary in an area ? | |
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where commercial crops require more water
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where there is a scanty rainfall
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where the rainfall is non-uniform
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all of the above
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| 8. | A useful soil moisture for plant growth is ? | |
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hygroscopic water
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capillary water
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gravitational water
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all of these
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| 9. | The ratio between the area of a crop irrigated and the quantity of water required during entire period of the growth, is known as ? | |
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crop period
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delta
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duty
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base period
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| 10. | Super-fluous water is also called ? | |
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all of these
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hygroscopic water
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gravitational water
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capillary water
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