## GUJARAT TECHNOLOGICAL UNIVERSITY DIPLOMA IN ENGINEERING - SEMESTER 4 - EXAMINATION - SUMMER 2026

| Subject Code: DI04006061                                                              | Subject Code: DI04006061                                                     | Subject Code: DI04006061                                                                                                                                       | Date: 01/06/2026   |
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| Subject Name:  Irrigation Engineering                                                 | Subject Name:  Irrigation Engineering                                        | Subject Name:  Irrigation Engineering                                                                                                                          |                    |
| Time: 10:30 AM TO 01:00 PM                                                            | Time: 10:30 AM TO 01:00 PM                                                   | Time: 10:30 AM TO 01:00 PM                                                                                                                                     | Total Marks: 70    |
| Instructions :                                                                        | Instructions :                                                               | Instructions :                                                                                                                                                 |                    |
| 1. Attempt all questions. 2. Make Suitable assumptions wherever necessary             | 1. Attempt all questions. 2. Make Suitable assumptions wherever necessary    | 1. Attempt all questions. 2. Make Suitable assumptions wherever necessary                                                                                      |                    |
| 3. Figures to the right indicate full marks.                                          | 3. Figures to the right indicate full marks.                                 | 3. Figures to the right indicate full marks.                                                                                                                   |                    |
| 4. Use of simple calculators and non-programmable scientific calculators are          | 4. Use of simple calculators and non-programmable scientific calculators are | 4. Use of simple calculators and non-programmable scientific calculators are                                                                                   |                    |
| 5. English version is authentic.                                                      | 5. English version is authentic.                                             | 5. English version is authentic.                                                                                                                               |                    |
| Q.1                                                                                   | (a)                                                                          | Give benefits of irrigation projects.                                                                                                                          | 03                 |
| GLYPH<c=1,font=/QZAAAA+BalooBhai2Regular> GLYPH<c=2,font=/QZAAAA+BalooBhai2Regular> ૧ | ( અ )                                                                        | િસGLYPH<c=3,font=/QOBAAA+ShrutiRegular>ચ ા ઈ   ય ોજ ન ાઓ  ના લાભો લખો.                                                                                                 | ૦૩                 |
|                                                                                       | (b)                                                                          | Draw layout of drip irrigation method.                                                                                                                         | 04                 |
|                                                                                       | ( બ )                                                                        | ટપક િસGLYPH<c=3,font=/QOBAAA+ShrutiRegular>ચ ા ઈ  રGLYPH<c=21,font=/QOBAAA+ShrutiRegular> ત ન ો  લ ે-આ ઉ ટ દ ોરો.                                                    | ૦૪                 |
|                                                                                       | (c)                                                                          | What is reservoir sedimentation. How do you estimate the probable life of a reservoir.                                                                         | 07                 |
|                                                                                       | ( ક )                                                                        | જળાશય કાંપ પર નGLYPH<c=31,font=/QOBAAA+ShrutiRegular>ધ લખો. જળાશયની લાઈફ ક#વી રGLYPH<c=21,font=/QOBAAA+ShrutiRegular>તે ગણતરGLYPH<c=21,font=/QOBAAA+ShrutiRegular> કરશો? | ૦૭                 |
| અથવા                                                                                   | અથવા                                                                          | અથવા                                                                                                                                                            |                    |
| OR                                                                                    | OR                                                                           | OR                                                                                                                                                             |                    |
|                                                                                       | (c)                                                                          | Establish relation between duty, delta and base period.                                                                                                        | 07                 |
|                                                                                       | ( ક )                                                                        | ડ)ુટGLYPH<c=21,font=/QOBAAA+ShrutiRegular> ,  ડ #,ટા   અ ન ે બ ેઝ પીરGLYPH<c=21,font=/QOBAAA+ShrutiRegular>ય ડ વ 0ચ ે સ ં બ ં ધ 1થાિપત કરો.                               | ૦૭                 |
| Q.2                                                                                   | (a)                                                                          | Draw neat diagram showing zones of reservoir.                                                                                                                  | 03                 |
| GLYPH<c=1,font=/QZAAAA+BalooBhai2Regular> GLYPH<c=2,font=/QZAAAA+BalooBhai2Regular> ૨ | ( અ )                                                                        | જળાશયના ભાગો દશા3વતી 1વ0છ આ5ૃિત દોરો.                                                                                                                                    | ૦૩                 |
|                                                                                       | (b)                                                                          | Give difference between sprinkler irrigation and drip irrigation                                                                                               | 04                 |
|                                                                                       | ( બ )                                                                        | 7વારા િસGLYPH<c=3,font=/QOBAAA+ShrutiRegular>ચ ાઈ  અ ને ટપક િસGLYPH<c=3,font=/QOBAAA+ShrutiRegular>ચ ાઈ વ0ચે તફાવત લખો.                                                  | ૦૪                 |
|                                                                                       | (c)                                                                          | What do you understand by water logging? List out it ill effects.                                                                                              | 07                 |
|                                                                                       | ( ક )                                                                        | જલ8સન એટલે :ું? તેની ખરાબ અસરોની યાદGLYPH<c=21,font=/QOBAAA+ShrutiRegular> બનાવો.                                                                                         | ૦૭                 |
| અથવા                                                                                   | અથવા                                                                          | અથવા                                                                                                                                                            | અથવા                |
| OR                                                                                    | OR                                                                           | OR                                                                                                                                                             | OR                 |
| Q.2                                                                                   | (a)                                                                          | Explain importance of crop rotation.                                                                                                                           | 03                 |
| GLYPH<c=1,font=/QZAAAA+BalooBhai2Regular> GLYPH<c=2,font=/QZAAAA+BalooBhai2Regular> ૨ | ( અ )                                                                        | પાક ફ#રબદલી;ું મહ>વ સમ?વો.                                                                                                                                          | ૦૩                 |
|                                                                                       | (b)                                                                          | Give requirement of canal lining.                                                                                                                              | 04                 |
|                                                                                       | ( બ )                                                                        | નહ#ર અ1તરની જ@રGLYPH<c=21,font=/QOBAAA+ShrutiRegular>યાત જણાવો.                                                                                                    | ૦૪                 |
|                                                                                       | (c)                                                                          | Draw layout of canal system and define types of canal.                                                                                                         | 07                 |

|                                                                                       | ( ક )   | નહ#ર પAધિતનો લે આઉટ દોરો અને નહરોના Bકારો CયાDયાઇત કરો.                                                              | ૦૭   |
|---------------------------------------------------------------------------------------|---------|---------------------------------------------------------------------------------------------------------|------|
| Q.3                                                                                   | (a)     | What do you understand by land reclamation?                                                             | 03   |
| GLYPH<c=1,font=/QZAAAA+BalooBhai2Regular> GLYPH<c=2,font=/QZAAAA+BalooBhai2Regular> ૩ | ( અ )   | જમીન Fુધારણા એટલે :ું?                                                                                         | ૦૩   |
|                                                                                       | (b)     | Write a note on silt excluder                                                                           | 04   |
|                                                                                       | ( બ )   | િસ,ટ એG5ુલડર પર નGLYPH<c=31,font=/QOBAAA+ShrutiRegular>ધ લખો.                                              | ૦૪   |
|                                                                                       | (c)     | Draw a line sketch of diversion head works showing components.                                          | 07   |
|                                                                                       | ( ક )   | ડાયવHન હ#ડ વક3સની આ5ૃિત દોરGLYPH<c=21,font=/QOBAAA+ShrutiRegular> તેના િવિવધ ભાગો દશા3વો.                            | ૦૭   |
|                                                                                       |         | અથવા OR                                                                                                  |      |
| Q.3                                                                                   | (a)     | Explain free flooding.                                                                                  | 03   |
| GLYPH<c=1,font=/QZAAAA+BalooBhai2Regular> GLYPH<c=2,font=/QZAAAA+BalooBhai2Regular> ૩ | ( અ )   | IGLYPH<c=21,font=/QOBAAA+ShrutiRegular> ફલડJગ સમ?વો.                                                     | ૦૩   |
|                                                                                       | (b)     | Explain importance of irrigation in India.                                                              | 04   |
|                                                                                       | ( બ )   | ભારતમાં િસGLYPH<c=3,font=/QOBAAA+ShrutiRegular>ચ ાઈ; ું  મહ>વ સમ? વો.                                           | ૦૪   |
|                                                                                       | (c)     | Write a note on canal lining. Give its advantages and disadvantages.                                    | 07   |
|                                                                                       | ( ક )   | નહ#રના અ1તર પર નGLYPH<c=31,font=/QOBAAA+ShrutiRegular>ધ લખો. નહ#ર અ1તરના ફાયદા અને ગેરફાયદા આપો.                  | ૦૭   |
| Q.4                                                                                   | (a)     | Write factors affecting duty.                                                                           | 03   |
| GLYPH<c=1,font=/QZAAAA+BalooBhai2Regular> GLYPH<c=2,font=/QZAAAA+BalooBhai2Regular> ૪ | ( અ )   | ડ)ુટGLYPH<c=21,font=/QOBAAA+ShrutiRegular> ન ે  અ સ ર કરતા પKરબળો લખો.                                       | ૦૩   |
|                                                                                       | (b)     | Give classification of soil according to geological formation                                           | 04   |
|                                                                                       | ( બ )   | જમીનના બંધારણ અ;ુસાર માટGLYPH<c=21,font=/QOBAAA+ShrutiRegular>; ું  વગLકરણ કરો.                                   | ૦૪   |
|                                                                                       | (c)     | Describe in brief various investigation required for reservoir planning.                                | 07   |
|                                                                                       | ( ક )   | જળાશય આયોજન માટ# જ@રGLYPH<c=21,font=/QOBAAA+ShrutiRegular> િવિવધ અMવેષણો; ું  Oૂંકમાં વણ3ન કરો.                       | ૦૭   |
| Q.4                                                                                   | (a)     | Write a note on canal fall.                                                                             | 03   |
| GLYPH<c=1,font=/QZAAAA+BalooBhai2Regular> GLYPH<c=2,font=/QZAAAA+BalooBhai2Regular> ૪ | ( અ )   | ક#નાલ ફોલ પર નGLYPH<c=31,font=/QOBAAA+ShrutiRegular>ધ લખો.                                                 | ૦૩   |
|                                                                                       | (b)     | Explain basin method of irrigation.                                                                     | 04   |
|                                                                                       | ( બ )   | સJચાઈની જલાશય પથરણ રGLYPH<c=21,font=/QOBAAA+ShrutiRegular>ત સમ?વો.                                          | ૦૪   |
|                                                                                       | (c)     | A crop requires a total depth of 9.3 cm of water for a base period of 120 days, find the duty of water. | 07   |
|                                                                                       | ( ક )   | એક પાકને પાણીની 5ુલ Qડાઈ ૯.૩ સેમી જ@ર હોય અને તેનો બેઝ પીરGLYPH<c=21,font=/QOBAAA+ShrutiRegular>યડ ૧૨૦                 | ૦૭   |
|                                                                                       |         | Kદવસ હોય તો ડ)ુટGLYPH<c=21,font=/QOBAAA+ShrutiRegular>ની ગણતરGLYPH<c=21,font=/QOBAAA+ShrutiRegular> કરો.     |      |
| Q.5                                                                                   | (a)     | Explain any one method to prevent waterlogging.                                                         | 03   |
| GLYPH<c=1,font=/QZAAAA+BalooBhai2Regular> GLYPH<c=2,font=/QZAAAA+BalooBhai2Regular> ૫ | ( અ )   | જળ8શન અટકવાની કોઈ પણ એક રGLYPH<c=21,font=/QOBAAA+ShrutiRegular>ત સમ?વો.                                     | ૦૩   |
|                                                                                       | (b)     | List out disadvantages of drip irrigation and sprinkler irrigation.                                     | 04   |

| ( બ )                                                                                         | ટપક િસGLYPH<c=3,font=/QOBAAA+ShrutiRegular>ચ ા ઇ  પ Aધિત અને છંટકાવ િસGLYPH<c=3,font=/QOBAAA+ShrutiRegular>ચાઇ પAધિત ના ગેર ફાયદાઓ જણાવો.   | ૦૪   |
|-----------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------|------|
| (c)                                                                                           | Explain syphon acqueduct and level crossing with neat sketch.                                                                | 07   |
| ( ક )                                                                                         | સાયફન એકવેડકટ અને લેવલ WોસJગ આ5ૃિત સાથે સમ?વો.                                                                                         | ૦૭   |
| અથવા                                                                                           | OR                                                                                                                           |      |
| Q.5 GLYPH<c=1,font=/QZAAAA+BalooBhai2Regular> GLYPH<c=2,font=/QZAAAA+BalooBhai2Regular> ૫ (a) | Explain gravitational water and capillary water.                                                                             | 03   |
| ( અ )                                                                                         | 8ેવીટGLYPH<c=21,font=/QOBAAA+ShrutiRegular> શ ન લ  વ ોટર અને ક#િપલરGLYPH<c=21,font=/QOBAAA+ShrutiRegular> વોટર િવષે સમ? વો.           | ૦૩   |
| (b)                                                                                           | Give the main criteria for evaluation of irrigation project.                                                                 | 04   |
| ( બ )                                                                                         | િસGLYPH<c=3,font=/QOBAAA+ShrutiRegular>ચ ા ઈ   ય ોજ ન ાન ા X ુ ,યા ંકન માટ#ના X ુDય X ુYા લખો.                                             | ૦૪   |
| (c)                                                                                           | List out steps to be carried out for water resources project planning.                                                       | 07   |
| ( ક )                                                                                         |                                                                                                                              | ૦૭   |

વોટર રGLYPH&lt;c=21,font=/QOBAAA+ShrutiRegular&gt; સ ોસ Lસ  BોZ[ટ \લાનJગ માટ#ના પગલાઓની યાદGLYPH&lt;c=21,font=/QOBAAA+ShrutiRegular&gt; બનાવો.