According to Khosla’s theory, the exit gradient in the absence of a downstream cutoff is_____________?

Related Mcqs:

1. Assertion A : To estimate the rainfall over a catchment, the number of raingauges required per unit area is large for hilly areas. Reason R : Rainfall gradient is steep. Select your correct answer according to the coding system given below ?

   A. Both A and R are true and R is the correct explanation of A
   B. Both A and R are true but R is not the correct explanation of A
   C. A is true but R is false
   D. A is false but R is true

2. As per Lacey’s theory, the silt factor is_________________?

   A. directly proportional to average par¬ticle size
   B. inversely proportional to average par¬ticle size
   C. directly proportional to square root of average particle size
   D. not related to average particle size

3. Wetted perimeter of a regime channel for a discharge of 64 cumecs as per Lacey’s theory will be_________?

   A. 19 m
   B. 38m
   C. 57m
   D. 76m

4. The uplift pressure on the face of a drainage gallery in a dam is taken as_________________?

   A. hydrostatic pressure at toe
   B. average of hydrostatic pressure at toe and heel
   C. two-third of hydrostatic pressure at toe plus one-third of hydrostatic pressure at heel
   D. none of the above

5. If the R.L’s of canal bed level and high flood level of drainage are 212.0 m and 210.0 m respectively, then cross drainage work will be________________?

   A. aqueduct
   B. superpassage
   C. syphon
   D. syphon aqueduct

6. The most suitable chemical which can be applied to the water surface for reducing evaporation is________________?

   A. methyl alcohol
   B. ethyl alcohol
   C. cetyl alcohol
   D. butyl alcohol

7. A river training work is generally required when the river is_______________?

   A. aggrading type
   B. degrading type
   C. meandering type
   D. both (A) and (B)

8. If the critical shear stress of a channel is xc, then the average value of shear stress required to move the grain on the bank is___________________?

   A. 0.5 xc
   B. 0.75 TC
   C. xc
   D. 1.33 TC

9. If d is the depth of the aquifer through which water is flowing, then the relationship between permeability k and transmissible T is given by_______________?

   A. T = kd
   B. T = k/d
   C. T= Vkd
   D. k= VTd

10. 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