The amount of irrigation water required to meet the evapotranspiration needs of the crop during its full growth is called________________?

Related Mcqs:

1. When surface of transpiration is submerged under water, then potential evapotranspiration is________________?

   A. much more than evapotranspiration
   B. much less than evapotranspiration
   C. equal to evapotranspiration
   D. equal to or less than evapotranspi-ration

2. For supplying water to rabi crop, kharif crop and sugarcane, the channel is designed for a capacity equal to the greater of the water requirement of_______________?

   A. rabi or kharif
   B. rabi and kharif or sugarcane
   C. rabi and sugarcane or kharif and sugarcane
   D. rabi or kharif or sugarcane

3. Irrigation water having the concentration of Na++ , Ca++ and Mg++ as 20, 3 and 1 Milli equivalent per litre respectively will be classified as__________________?

   A. low sodium water
   B. medium sodium water
   C. high sodium water
   D. very high sodium water

4. Which of the following canal structures is used to remove surplus water from an irrigation channel into a natural drain ?

   A. canal fall
   B. canal outlet
   C. canal escape
   D. canal regulator

5. The depth of water required to bring the soil moisture content of a given soil upto its field capacity is called_________________?

   A. hygroscopic water
   B. equivalent moisture
   C. soil moisture deficiency
   D. pellicular water

6. The net head under which the turbine reaches its peak efficiency at synchronous speed is called________________?

   A. design head
   B. rated head
   C. gross head
   D. operating head

7. Lining of irrigation channels________________?

   A. increases the waterlogging area
   B. decreases the waterlogging area
   C. does not change the water logging area
   D. none of the above

8. To determine the discharge at a section in a stream from its rating curve, the required data are_______________?

   1) slope of water surface at the section
   2) stage at the section
   3) current meter readings at the section
   The correct answer is?

   A. (1) and (2)
   B. (2) and (3)
   C. only (2)
   D. only (3)

9. The ratio of rate of change of the discharge of an outlet to the rate of change of the discharge of distributing channel is called________________?

   A. proportionality
   B. flexibility
   C. setting
   D. sensitivity

10. The stream which does not have any base flow contribution is called________________?

    A. perennial stream
    B. intermittent stream
    C. ephemeral stream
    D. none of the above