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
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 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
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
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
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
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
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
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
Which of the scale is the smallest respectively?
A)
1 cm = 10 m
B)
1 cm = 1000 km
C)
RF = 1/100000
D)
1 : 10000
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
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
Precipitation is said to be drizzle when the water droplets and its intensity is:
A)
<0.5mm & <0.01 mm/hr respectively
B)
>0.5mm & >0.01 mm/hr respectively
C)
<0.5mm & >0.01 mm/hr respectively
D)
<0.05mm & <0.1 mm/hr respectively
Drizzle has very small drops, with diameter below about 0.5 mm, and very low intensity.
Assistant Soil Conservation Engineer • 2021 • Agricultural Engineering Paper-II
In remote sensing the sensors are used to detect:
A)
EMR
B)
IR
C)
Sound energy
D)
Visible light
Remote-sensing sensors detect reflected or emitted electromagnetic radiation (EMR).
Assistant Soil Conservation Engineer • 2021 • Agricultural Engineering Paper-II
Area of unit hydrograph divided by the catchment area gives:
A)
Direct runoff
B)
Peak runoff
C)
Effective rainfall depth
D)
Total runoff
The area under a unit hydrograph represents a volume; dividing by catchment area gives the effective rainfall depth (one unit).
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
The length of a survey line measured with a 30 cm chain was found to be 631.5 m. When the chain was compared with a standard chain, it was found to be 0.10 m too long. Then the true length of survey line is:
A)
603.033 m
B)
631.241 m
C)
630.346 m
D)
633.603 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
The unit of drainage density is:
A)
Sq. m
B)
m2/s
C)
m/sqm
D)
m3/s
Drainage density is total stream length divided by basin area, so its dimension is inverse length (m per sq m).
Assistant Soil Conservation Engineer • 2021 • Agricultural Engineering Paper-II
A rainfall is called as light rainfall when its intensity is:
A)
Less than 2.5 mm/hr
B)
2.5 mm/hr
C)
More than 2.4 mm/hr
D)
2.4 mm/hr
Light rainfall has intensity below 2.5 mm/h.
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 function of levelling head is:
A)
to provide a bearing for outer hollow spindle
B)
to attach the Theodolite to the tripod
C)
to provide a mean of levelling the instrument
D)
all of these
The levelling head provides attachment to the tripod, supports the spindle, and permits levelling of the instrument.
Assistant Soil Conservation Engineer • 2021 • Agricultural Engineering Paper-II
The rise and fall method of the levelling provides a complete check on:
A)
intermediate sight
B)
back sight
C)
foresight
D)
all of these
Rise-and-fall levelling provides an arithmetic check involving backsights, foresights and intermediate sights.
Assistant Soil Conservation Engineer • 2021 • Agricultural Engineering Paper-II
The line of collimation should be parallel to:
A)
vertical axis
B)
bubbles axis
C)
both (a) & (b)
D)
none of these
In proper adjustment, the line of collimation is parallel to the bubble-tube axis.
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
The contour interval is depends upon:
A)
purpose and extent of survey
B)
scale of the map
C)
nature of the ground
D)
all of these
Contour interval depends on the map scale, purpose/extent of survey and nature of terrain.
Assistant Soil Conservation Engineer • 2021 • Agricultural Engineering Paper-II
In levelling, a station is a point where:
A)
bench mark is mark
B)
staff is placed
C)
instrument is set up
D)
none of these
A station in levelling is the point at which the instrument is set up.
