MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Irrigation Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the correct formula for Gross irrigation requirement? |
| A. | C<sub>u</sub> R<sub>e</sub> |
| B. | CIR + leaching losses |
| C. | NIR/N<sub>a</sub> |
| D. | FIR/N<sub>c</sub> |
| Answer» E. | |
| 2. |
The moisture holding capacity of the soil in a 100-hectare farm is 20 cm/m. The root zone depth of the crop is 1.0 m and peak rate to moisture use is 5 mm/day. The field is to be irrigated when 40% of the available moisture in the root zone is depleted. Calculate the frequency of irrigation. |
| A. | 16 days |
| B. | 18 days |
| C. | 20 days |
| D. | 25 days |
| Answer» B. 18 days | |
| 3. |
An outlet irrigates an area of 40 ha. The discharge required at this outlet to meet the evapotranspiration requirement of 40 mm occurring uniformly in 40 days neglecting other field losses is _________ |
| A. | 4.52 litres / sec |
| B. | 2.31 litres / sec |
| C. | 4.01 litres / sec |
| D. | 1.52 litres / sec |
| Answer» B. 2.31 litres / sec | |
| 4. |
Determine the Gross irrigation requirement for an irrigation system if consumptive use of crop is 200 cm in terms of depth and the rainfall excess is 30 cm. assume water application efficiency = 50% and conveyance efficiency = 90%. |
| A. | 370 cm |
| B. | 380.79 cm |
| C. | 355.56 cm |
| D. | 377.77 cm |
| Answer» E. | |
| 5. |
What is the correct representation for the calculation of NIR? |
| A. | C<sub>u</sub> R<sub>e</sub> |
| B. | CIR + leaching losses |
| C. | FIR + conveyance losses |
| D. | FIR + leaching losses + conveyance losses |
| Answer» C. FIR + conveyance losses | |
| 6. |
What is the field irrigation requirement (FIR)? |
| A. | The water required to meet the evaporation needs of a crop |
| B. | Amount of water required to delivered at the field to meet evapotranspiration and leaching needs |
| C. | Amount of water required to meet the net irrigation requirements plus water lost due to surface runoff and percolation |
| D. | Amount of water required to meet the field irrigation requirements plus water lost in conveyance through the canal system |
| Answer» D. Amount of water required to meet the field irrigation requirements plus water lost in conveyance through the canal system | |
| 7. |
Which of the following statement is not correct about Effective rainfall? |
| A. | It doesn t take into consideration precipitation lost through deep percolation |
| B. | It satisfies evapotranspiration needs of the crop |
| C. | It includes surface runoff loss |
| D. | It doesn t include surface runoff water loss |
| Answer» D. It doesn t include surface runoff water loss | |