Assistant Soil Conservation Engineer • 2021 • Agricultural Engineering Paper-II
The angle between the prolongation of the preceding line and the forward line traverse, is called:
A)
included angle
B)
deflection angle
C)
direct angle
D)
none of these
The angle measured from the prolongation of the previous traverse line to the forward line is the deflection angle.
Assistant Soil Conservation Engineer • 2021 • Agricultural Engineering Paper-II
Method used for chaining on sloping ground is:
A)
By stepping method
B)
By Clinometor method
C)
By Hypotenusal allowance method
D)
Both (a) & (c)
The correct choice is A: this follows from standard civil-engineering surveying/structural/concrete principles for the stated condition.
Assistant Soil Conservation Engineer • 2021 • Agricultural Engineering Paper-II
Kirpich formula estimates the time of concentration (T_c) as:
A)
T = 0.02((L3/H) 1 2)0.77
B)
T = 0.02L0.77S-0.385
C)
T = 0.02(LS)-0.385
D)
T = 0.02(LS)0.77
Kirpich's empirical relation is T_c = 0.02 L^0.77 S^-0.385 (with standard unit conventions).
Assistant Soil Conservation Engineer • 2021 • Agricultural Engineering Paper-II
Contour interval is proportional to:
A)
directly to the flatness of the ground
B)
directly to the scale of map
C)
inversely to the scale of map
D)
none of these
Contour interval generally increases with map scale; larger-scale maps can use smaller intervals, but the standard relationship asked here is direct with scale.
Assistant Soil Conservation Engineer • 2021 • Agricultural Engineering Paper-II
Unit Hydrograph theory was enunciated by:
A)
Merril Bernard
B)
W.W. Horner
C)
LeRoy K. Sherman
D)
Robert E. Horten
The unit hydrograph theory was developed by LeRoy K. Sherman.
Assistant Soil Conservation Engineer • 2021 • Agricultural Engineering Paper-II
Average rainfall over a basin may be computed using:
A)
Arithmetic average method
B)
Thiessen polygon method
C)
Isohyetal method
D)
All of these
Arithmetic mean, Thiessen polygons and isohyetal methods can all be used.
Assistant Soil Conservation Engineer • 2021 • Agricultural Engineering Paper-II
Which of the following phase of hydrograph does not involves splash erosion?
A)
Recession phase
B)
Rising phase
C)
Peak phase
D)
Both (b) & (c)
Splash erosion is associated with the active rainfall/rising conditions; it is not a phase of the recession limb.
Assistant Soil Conservation Engineer • 2021 • Agricultural Engineering Paper-II
Bucket capacity of tipping rain gauge is:
A)
2.5cm of rainfall
B)
0.25mm of rainfall
C)
12.7mm of rainfall
D)
5.0mm of rainfall
A typical tipping bucket is calibrated to tip after about 0.25 mm of rainfall.
Assistant Soil Conservation Engineer • 2021 • Agricultural Engineering Paper-II
Which of the following is associated in computation of flow velocity in grassed waterway design?
A)
Manning’s Formula
B)
Rational Formula
C)
Inglis Formula
D)
Muskingum Equation
Manning’s equation is commonly used to compute flow velocity in open grassed waterways.
Assistant Soil Conservation Engineer • 2021 • Agricultural Engineering Paper-II
Maximum size of raindrop varies from:
A)
0.5mm-7.0mm
B)
0.5mm-6.0mm
C)
0.6mm-7.0mm
D)
0.5mm-8.0mm
Raindrop diameters can approach about 7 mm; the closest stated range is 0.5–7.0 mm.
Assistant Soil Conservation Engineer • 2021 • Agricultural Engineering Paper-II
In farm pond embankment the function of core wall is to:
A)
Check the seepage flow
B)
Prevent dam damage
C)
Cause sediment deposition
D)
All of these
The core wall is an impervious/semi-impervious barrier provided mainly to check seepage through the embankment.
Assistant Soil Conservation Engineer • 2021 • Agricultural Engineering Paper-II
The magnetic bearing of a line AB is S 30º E. If the declination is 6º west, then the true bearing is:
A)
S 36º E
B)
N 36º W
C)
N 36º E
D)
S 24º E
The correct choice is A: this follows from standard civil-engineering surveying/structural/concrete principles for the stated condition.
Assistant Soil Conservation Engineer • 2021 • Agricultural Engineering Paper-II
Symon’s rain-gauge has a receiving bottle capacity of about:
A)
75-150 mm of rainfall
B)
70-100 mm of rainfall
C)
70-150 mm of rainfall
D)
75-100 mm of rainfall
The standard Symon's gauge has a receiving bottle capacity of roughly 70–100 mm of rainfall.
Assistant Soil Conservation Engineer • 2021 • Agricultural Engineering Paper-II
Natural error in levelling is caused due to:
A)
wind vibration
B)
temperature variation
C)
atmospheric refraction
D)
all of these
Wind, temperature variation and atmospheric refraction can all introduce natural levelling errors.
Assistant Soil Conservation Engineer • 2021 • Agricultural Engineering Paper-II
The upper limit of runoff coefficient is:
A)
1
B)
10
C)
1.5
D)
15
The runoff coefficient is a ratio and cannot exceed 1 in the normal physical definition.
Assistant Soil Conservation Engineer • 2021 • Agricultural Engineering Paper-II
Negative errors are caused in chain, when its length is:
A)
equal to the standard length
B)
less than the standard length
C)
more than the standard length
D)
any of these
The correct choice is B: this follows from standard civil-engineering surveying/structural/concrete principles for the stated condition.
Assistant Soil Conservation Engineer • 2021 • Agricultural Engineering Paper-II
Offsets are:
A)
chain lines out of alignment
B)
measurements taken in chain survey
C)
small measurements from chain line
D)
none of these
The correct choice is C: this follows from standard civil-engineering surveying/structural/concrete principles for the stated condition.
Assistant Soil Conservation Engineer • 2021 • Agricultural Engineering Paper-II
Bucket capacity of tipping rain gauge is:
A)
2.5cm of rainfall
B)
0.25mm of rainfall
C)
12.7mm of rainfall
D)
5.0mm of rainfall
A typical tipping bucket is calibrated to tip after about 0.25 mm of rainfall.
Assistant Soil Conservation Engineer • 2021 • Agricultural Engineering Paper-II
Which is an odd instrument with regards to levelling?
A)
Altimeter
B)
Planimeter
C)
Abney hand level
D)
Clinometer
A planimeter measures area; it is not a levelling instrument.
Assistant Soil Conservation Engineer • 2021 • Agricultural Engineering Paper-II
The most optimum flow velocity for the ballasted waterway is:
A)
3 m/s
B)
10 m/s
C)
1.8 m/s
D)
5 m/s
About 1.8 m/s is the commonly cited optimum velocity in the referenced waterway-design context.
Assistant Soil Conservation Engineer • 2021 • Agricultural Engineering Paper-II
The most suitable shape of grassed waterways is:
A)
Triangular
B)
Trapezoidal
C)
Rectangular
D)
Parabolic
A parabolic cross-section is generally the most hydraulically suitable shape for grassed waterways.
Assistant Soil Conservation Engineer • 2021 • Agricultural Engineering Paper-II
The contour bunds spacing varies between:
A)
5-10 m
B)
5-15 m
C)
5- 20 m
D)
Both (a) & (b)
Contour bund spacing is commonly given in the range represented by 5–10 m and 5–15 m depending on conditions, so both are accepted in the source style.
Assistant Soil Conservation Engineer • 2021 • Agricultural Engineering Paper-II
Which of the following method computes storm-wise runoff depth?
A)
SCS method
B)
Cook’s method
C)
Rational method
D)
Morton’s method
The SCS method is used to estimate event/storm runoff depth from rainfall and catchment characteristics.
Assistant Soil Conservation Engineer • 2021 • Agricultural Engineering Paper-II
What will be the maximum length of an offset so that displacement of a point on plan on scale 1 cm = 10 m should not exceed 0.025 cm, if the offset was laid out 5º from its true perpendicular direction?
A)
3.284 m
B)
2.868 m
C)
2.688 m
D)
3.482 m
The correct choice is B: this follows from standard civil-engineering surveying/structural/concrete principles for the stated condition.
Assistant Soil Conservation Engineer • 2021 • Agricultural Engineering Paper-II
In direct method of contouring, the process of locating points lying on the contour is known as:
A)
ranging
B)
horizontal control
C)
vertical control
D)
none of these
Direct contouring locates points at known elevations, i.e. establishes vertical control along the contour.
