MCQOPTIONS
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MCQOPTIONS
This section includes 65 Mcqs, each offering curated multiple-choice questions to sharpen your Irrigation Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Calculate the water distribution efficiency, if the depths of penetration along the length of a border strip at an interval of 20 m are 1.5 m, 1.8 m and 2.1 m respectively. |
| A. | 0.6667 |
| B. | 0.8333 |
| C. | 0.8889 |
| D. | 0.9767 |
| Answer» D. 0.9767 | |
| 52. |
If a paddy crop requires 12 cm depth of water at an average interval of 10 days and the crop period of the paddy is 120 days, the total depth of water (delta) required for the crop to achieve its maturity is |
| A. | 120 cm |
| B. | 12 cm |
| C. | 144 cm |
| D. | 100 cm |
| E. | 90 cm |
| Answer» D. 100 cm | |
| 53. |
A crop requires a total water depth of 90 cm for a base period of 120 days. The discharge required to irrigate the crop in 2880 hectares is |
| A. | 0.25 m3 / s |
| B. | 1.0 m3 / s |
| C. | 2.5 m3 / s |
| D. | 10.0 m3 / s |
| Answer» D. 10.0 m3 / s | |
| 54. |
For the growth of plants, the useful soil moisture is |
| A. | rainwater |
| B. | capillary water |
| C. | gravity water |
| D. | chemically treated water |
| Answer» C. gravity water | |
| 55. |
Crop Water Use Efficiency can be defined as the ratio of: |
| A. | Yield of crop to the amount of water depleted by crop in evapotranspiration |
| B. | Yield of crop to the total amount of water used in the field |
| C. | Water output to water input per yield of crop |
| D. | Water stored in the root zone of the crops to the water lost due to the evapotranspiration |
| Answer» B. Yield of crop to the total amount of water used in the field | |
| 56. |
Paleo is defined as: |
| A. | the first watering before the crop is sown |
| B. | the first watering after the crop is sown |
| C. | the first watering after the application of fertilizers |
| D. | the last watering before the harvest |
| Answer» B. the first watering after the crop is sown | |
| 57. |
An outlet irrigates an area of 20 ha. The discharge (l/s) required at this outlet to meet the evapotranspiration requirement of 20 mm occurring uniformly in 20 days neglecting other field losses is ________. |
| A. | 2.52 |
| B. | 2.31 |
| C. | 2.01 |
| D. | 1.52 |
| Answer» C. 2.01 | |
| 58. |
A certain crop needs 3 cumec of water for irrigating 5100 hectares land up to 10 cm depth. Total 12 watering at an interval of 10 days are needed. Duty and delta (in hectare/cumec and cm respectively) will be: |
| A. | 51000, 1200 |
| B. | 15300, 0.12 |
| C. | 1700, 120 |
| D. | 510, 1.2 |
| Answer» D. 510, 1.2 | |
| 59. |
Duty of a Canal is |
| A. | the time for which it has to run |
| B. | the maximum discharge it has to carry |
| C. | to supply water to the fields |
| D. | the area per unit discharge |
| Answer» E. | |
| 60. |
Depending upon the source from which the water is drawn, flow irrigation can be sub-divided into1.River canal irrigation2. Reservoir or tank irrigation3. Combined storage and lift irrigation4. Combined storage and diversion irrigationWhich of the above designations are relevant? |
| A. | 1, 2 and 3 only |
| B. | 1, 2 and 4 only |
| C. | 1, 3 and 4 only |
| D. | 2, 3 and 4 only |
| Answer» C. 1, 3 and 4 only | |
| 61. |
Consumptive Irrigation Requirement is calculated using the following:(i) Consumptive use(ii) Effective rainfall(iii) Water lost as percolation |
| A. | Only (i) |
| B. | (i) and (ii) |
| C. | (i) and (iii) |
| D. | (i), (ii) and (iii) |
| Answer» C. (i) and (iii) | |
| 62. |
. ______ is defined as the amount of irrigation water that is required to meet the evapo-transpiration needs of the crop during its full growth. |
| A. | Gross Irrigation Requirement |
| B. | Net Irrigation Requirement |
| C. | Consumptive Irrigation Requirement |
| D. | Field Irrigation Requirement |
| Answer» D. Field Irrigation Requirement | |
| 63. |
Net irrigation requirement of a crop is equal to |
| A. | consumptive use |
| B. | consumptive use-effective rainfall |
| C. | consumptive use-effective rainfall + leaching and other requirements |
| D. | percolation loss + effective rainfall |
| Answer» D. percolation loss + effective rainfall | |
| 64. |
Irrigation frequency is a function of |
| A. | Crop only |
| B. | Soil, crop and climate |
| C. | Soil, crop, climate and fertilizer |
| D. | Soil and climate |
| Answer» C. Soil, crop, climate and fertilizer | |
| 65. |
If the crop rice requires about 10 cms depth of water at an average interval of about 10 days and the crop period of the rice is 110 days, the delta for the crop rice will be |
| A. | 10 cms |
| B. | 50 cms |
| C. | 68 cms |
| D. | 110 cms |
| Answer» E. | |