Soil Water Conservation Engineering Mid - II, November - 2014

1.In design of temporary gully control structures, no. of years of rainfall data is to be considered.
  • 5 years
  • 10 years
  • 25 years
  • 100 years
Answer: B
2.In case of low rainfall or shallow soils the type of bench terrace is used
  • Slopping outward
  • slopping inward
  • level
  • none
Answer: A
3.Seepage line is similar to
  • a straight line
  • an ellipse
  • a parabola
  • a hyperbola
Answer: C
4.In vegetated waterways, the used lining material is
  • grasses
  • trees
  • shrubs
  • None
Answer: A
5.Irrigated type of bench terraces are also known as
  • Inward terraces
  • outward terraces
  • table top terraces
  • None
Answer: C
6.Which of the following is associated to the computation of flow velocity in vegetated waterways
  • Manning’s formula
  • Rational formula
  • Muskingum eq.
  • None
Answer: A
7.Water harvesting implies storing water in
  • Reservoir
  • soil
  • both A & B
  • river
Answer: C
8.In an embankment, the core is made of a material of
  • permeable
  • impermeable
  • porous
  • sandy
Answer: B
9.In Universal soil loss equation, the factor ‘K’ represents
  • crop management
  • rainfall erosivity
  • soil erodibility
  • None
Answer: C
10.The routing model of MUSLE was developed for application on
  • Small watershed
  • Large watersheds
  • flooded watersheds
  • rain soaked watersheds
Answer: B
11.For design of any permanent soil conservation structure, ________ years of rainfall data is to be taken into account.
Answer: 25 years
12.The apron thickness in a drop structure is based on the _________________ pressure.
Answer: Uplift
13.The ratio of inertia force to the gravitational force is called ________________.
Answer: Froude number
14.Broad base terraces are called as _________ terraces.
Answer: Ridge
15.Terrace spacing is normally expressed in terms of the _____________.
Answer: Vertical interval
16.Drainage type broad base terraces are constructed on ___________ slope of lands.
Answer: 3-10%
17.The line of seepage in an earth embankment is also called as _______________.
Answer: Phreatic line
18.A line joining the points of equal elevation is known as _____________.
Answer: Contour
19.Straight, parallel and equally spaced contour lines indicates __________ area.
Answer: Plain
20.The long term average annual sediment yield can be predicted by applying a ____________ ratio to the estimated gross erosion.
Answer: Delivery