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Consumptive use of water by a crop means water consumed by

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BPSC AE Paper 6 (Civil) 14 Oct 2022 Official Paper
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  1. evaporation only
  2. conveyance loss and evaporation
  3. transportation and conveyance loss
  4. evaporation and transpiration

Answer (Detailed Solution Below)

Option 4 : evaporation and transpiration
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Concept:

Consumptive use of water by a crop is the depth of water consumed by the plant in the process of transpiration and evaporation, during crop growth.

These two processes (i.e. transpiration and evaporation) collectively termed as evapo-transpiration.

Consumptive use of water by a crop is expressed as the depth of water per unit area for specified period, such as days, months or seasons. The value of consumptive use of water is needed to calculate the irrigation requirement of the crop

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Q8.Out of 120 cm of water pumped into a canal, 80 cu m of water could be supplied to a field. 60 cu m of water was stored in the root zone while water required in root zone prior to irrigation was 80 cu m. The storage efficiency of irrigation is
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Q1.In the case of weirs on permeable foundations, the d/s pile is provided
Q2.The ratio of water stored in the root zone to the water delivered to the field is known as
Q3.Wetted perimeter of a regime channel for a discharge of 64 cumecs as per Lacey's theory will be:
Q4.A canal carrying discharge of 20 cumec has a Culturable Command Area (CCA) of 20,000 hectares with intensity of rabi crop of 80% and base period of 120 days. What is the duty of canal?
Q5.Calculate the delta for a crop, if duty for a base period of 120 days is 1728 hectares?
Q6.Relationship between duty and delta, if duty is D and base period is B, is: 
Q7.Identify the type of cross drainage work shown in the below figure.
Q8.A rectangular channel has a bottom width of of 2 m and longitudinal slope of the channel is 0.0003. What will be the average shear stress on the channel boundary when the flow takes place at a uniform depth of 1.25 m? (Take γ = 10 kN/m3)
Q9.The maximum permissible eccentricity for no tension at the base of a gravity dam is
Q10.A river training work is generally required when the river is
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