Irrigation Engineering(Civil Engineering ) Questions and Answers

Question 1. For diversion of flood water of rivers, the type of canal constructed, is
  1.    Ridge canal
  2.    Perennial canal
  3.    Inundation canal
  4.    Canal
Explanation:-
Answer: Option C. -> Inundation canal
Question 2. In rigid module, the discharge
  1.    Is independent of water levels in the distributary and water course
  2.    Depends upon the water level in distributary
  3.    Depends upon the water level in the water course
  4.    Depends upon the water levels of both, i.e. distributary and water course
Explanation:-
Answer: Option A. -> Is independent of water levels in the distributary and water course
Question 3. The water stored in the reservoir below the minimum pool level is called
  1.    useful storage
  2.    dead storage
  3.    valley storage
  4.    surcharge storage
Explanation:-
Answer: Option B. -> dead storage
Question 4. If the straight sides of a triangular section of a lined canal with circular bottom of radius D, make an angle $$\theta $$ with horizontal, the hydraulic mean depth is
  1.    $${\text{D}}$$
  2.    $$\frac{{\text{D}}}{2}$$
  3.    $$\frac{{\text{D}}}{3}$$
  4.    $$\frac{{\text{D}}}{4}$$
  5.    $$\frac{{\text{D}}}{5}$$
Explanation:-
Answer: Option B. -> $$\frac{{\text{D}}}{2}$$
Question 5. A straight glacis type fall with a baffle platform and a baffle wall is called
  1.    Vertical drop-fall
  2.    Glacis fall
  3.    Montague type fall
  4.    Inglis fall
Explanation:-
Answer: Option D. -> Inglis fall
Question 6. Finally formed berms in canals are provided for
  1.    Protection of banks erosion by the waves
  2.    Control of seepage losses
  3.    Strengthening of banks
  4.    All the above
Explanation:-
Answer: Option D. -> All the above
Question 7. A hydroelectric scheme operating under a head of 80 m will be classified as
  1.    low head scheme
  2.    medium head scheme
  3.    high head scheme
  4.    none of the above
Explanation:-
Answer: Option C. -> high head scheme
Question 8. Canals constructed for draining off water from water logged areas, are known
  1.    Drains
  2.    Inundation canals
  3.    Valley canals
  4.    Contour canals
Explanation:-
Answer: Option A. -> Drains
Question 9. Irrigation water having the concentration of Na++, Ca++ and Mg++ as 20, 3 and 1 Milli equivalent per litre respectively will be classified as
  1.    Low sodium water
  2.    Medium sodium water
  3.    High sodium water
  4.    Very high sodium water
Explanation:-
Answer: Option B. -> Medium sodium water
Question 10. If d1 is the depth of cutting, d2 is the height of the bank from bed level r2 : 1 and r1 : 1 are the slopes in filling and cutting respectively, the horizontal distance n between the bed and bank, is
  1.    x = r1d1
  2.    x = r2d2
  3.    $${\text{x}} = \frac{{{{\text{d}}_1}}}{{{{\text{r}}_1}}}$$
  4.    $${\text{x}} = \frac{{{{\text{d}}_2}}}{{{{\text{r}}_2}}}$$
Explanation:-
Answer: Option B. -> x = r2d2
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