Irrigation Engineering

1. A counter berm is

1. A horizontal benching provided on the inside slope
2. A horizontal benching provided on the outside slope
3. A vertical benching provided on the outer edge of the bank
4. A vertical benching provided on the inner edge of the bank

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2. A current meter measures the velocity of flow, if it is held

1. On the surface of water
2. At the bottom of channel
3. At any point within the cross-section
4. None of these

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3. A deficit of sediments in flowing water may cause a river

1. Meandering type
2. Aggrading type
3. Degrading type
4. Sub-critical type

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4. A fall in a canal bed is generally provided, if

1. Ground slope exceeds the designed bed slope
2. Designed bed slope exceeds the ground slope
3. Ground slope is practically the same as the designed bed slope
4. None of these

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5. A fall which maintains its depth, is

1. A trapezoidal notch fall
2. A low weir fall
3. A rectangular notch fall
4. All the above

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6. A hydraulic jump is generally formed when a stream moving with

1. A hyper-critical velocity meets a stream moving with a critical velocity
2. A hyper-critical velocity meets a stream moving with a hyper-critical velocity
3. A hyper-critical velocity meets a stream moving with a sub-critical velocity
4. A sub-critical velocity meets a stream moving with a hyper-critical velocity

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7. A hydraulic structure is designed to withstand

1. Seepage forces
2. Hydraulic jump
3. Hydraulic pressure
4. All the above

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8. A land is said to be water-logged if its soil pores within

1. A depth of 40 cm are saturated
2. A depth of 50 cm are saturated
3. Root zone of the crops are saturated
4. All the above

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9. A minimum of 90 cm free board is provided if the discharge in the canal is between

1. 30 to 33 cumecs
2. 30 to 60 cumecs
3. Over 60 cumecs
4. Over 100 cumecs

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10. A river is said to be of

1. Aggrading type if it builds up its bed to a certain slope
2. Degrading type if it cuts its bed to a certain slope
3. Meandering type if it flows in sinuous curve
4. All the above

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