A repelling groyne is aligned________________?

Related Mcqs:

1. The water utilizable by plants is available in soils mainly in the form of________________?

   A. gravity water
   B. capillary water
   C. hydroscopic water
   D. chemical water

2. The unit hydrograph due to a storm may be obtained by dividing the ordinates of the direct runoff hydrograph by_______________?

   A. direct runoff volume
   B. period of storm
   C. total rainfall
   D. none of the above

3. Seepage through foundation in an earthen dam is controlled by providing___________________?

   A. rock toe
   B. horizontal blanket
   C. impervious cut off
   D. chimney drain

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

   A. 0
   B. unity
   C. infinity
   D. very large

5. If D is the depth of scour below original bed, then the width of launching apron is generally taken as________________?

   A. 1.2 D
   B. 1.5 D
   C. 2.0 D
   D. 2.5 D

6. Which of the following methods is used to estimate flood discharge based on high water marks left over in the past ?

   A. slope-area method
   B. area-velocity method
   C. moving boat method
   D. ultra-sonic method

7. The aqueduct or superpassage type of works are generally used when_______________?

   A. high flood drainage discharge is small
   B. high flood drainage discharge is large and short lived
   C. high flood drainage discharge is large and continues for a long time
   D. none of the above

8. The maximum permissible eccentricity for no tension at the base of a gravity dam is__________________?

   A. B/2
   B. B/3
   C. B/4
   D. B/6

9. Under the same conditions, which of the following shapes of water surface will give the highest rate of evaporation ?

   A. flat water surface
   B. convex water surface
   C. concave water surface
   D. independent of shape of water surface

10. 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)