1. A standard, ground-based evaporation pan, corresponding to Indian Standards, is installed at the banks of a surface reservoir. The water surface area on a particular day is 100 hectares. The recorded evaporation loss from the pan, on a certain day, is nearly 4.0 cm. What is the anticipated evaporation loss from the reservoir for that day?
(a) (1.8 to 2) x 104 m3perday
(b) (2.5 to 2.75) x 104 m3per day
(c) (3.0 to3.25) x l04 m3perday
(d) (3.8 to 4.05) x 104 m3perday
Ans. (c)
2. What is the probable maximum precipitation (PMP)?
(a) Projected precipitation for a 100-yr return period
(b) Maximum precipitation for all past recorded storms
(c) Upper limit of rainfall, which is justified climatologically
(d) Effective perceptible water
Ans. (c)
3. Consider the following statements:
An aqueduct is a cross drainage work in which
1. A canal is carried over the drainage channel.
2. A drainage channel ‘is carried over the canal.
3. Both drainage channel and canal are at the same level
Which of the statements given above is/are correct?
(a) I only
(b) I and 2 only
(c) 2 and 3 only
(d) 1, 2 and3
Ans. (a)
4. How is the determination of aquifer parameters S (Storage Coefficient) and T (Transmissivity Coefficient) done?
1. By recording the drawdown in a pumped well at different time intervals.
2. By recording the drawdown in installed observation wells at different time intervals.
Select the correct answer using the code given below:
(a) 1 only
(b) 2 only
(c) Both I and 2
(d) Neither 1 nor 2
Ans. (c)
5. In a 4 cm diameter pipeline carring laminar flow of a liquid with ji 1.6 centipoise, the velocity at the axis is 2 m/s. What is the shear stress midway between the wall and the axis?
(a) 0.01 N/m2
(b).0125N/m2
(c) 0.0175 N/m2
(d) 0.02 N/m2
Ans. (c)
6. A hydraulic jump occurs at the toe of a spill. way. The depth before jump is 0.2 m. The sequent depth is 3.2 m. What is the energy dissipated in m (approximate)?
(a) 27
(b) 10.5
(c) 15
(d) 42
Ans. (b)
7. In a wide rectangular channel, an increase in the normal depth by 20% corresponds to how much (approximate) increase in discharge?
(a) 12%
(b) 20%
(c) 36%
(d) 48%
Ans. (c)
8. A penstock is 2000 m long and the velocity of pressure wave in it is 1000 m/s. Water hammer pressure head for instantaneous closure of valve at the downstream end of the pipe is 60 m. If the valve is closed 4s, then what is the peak water hammer, pressure in m of water?
(a) 15
(b) 30
(c) 60
(d) 120
Ans. (c)
9. Which one of the following is the correct statement?
A heterotroph is an organism that obtains
(a) Its cell carbon from an inorganic source
(b) Its energy from the oxidation of simple inorganic compounds
(c) Its cell carbon as well as its energy from organic matter
(d) Its energy from a natural ecosystem
Ans. (c)
10. The term ‘biological magnification’ indicates which one of the following?
(a) Likelihood of increasing size of animals during evolution
(b) Magnification pertaining to microscopy
(c) Accumulation of pollutants in soil
(d) Accumulation of pollutants in successive consumers
Ans. (d)
11. Which one of the following is the correct statement?
The contact pressure distribution below rigid footing on the surface of a clay soil is
(a) Uniform for the full width
(b) Maximum at the centre and minimum at the edges
(c) Maximum at the edges and minimum at the centre
(d) Of an irregular shape
Ans. (c)
12. The following soils are compacted at the same compactive effort in the field. Which one of the following is the correct sequence in the increasing order of their maximum dry density?
(a) Silty clay—Clay—Sand—Grave sand clay mixture
(b) Sand—Gravel sand clay mixture—Silty clay—Clay
(c) Clay—Silty clay—Sand— Gravel sand clay mixture
(d) Sand—Gravel sand clay mixture— Clay—Silty clay
Ans. (c)
13. Consider the following statements:
On addition of lime to a clay soil, generally
1. M.D.D. and strength both increase
2. M.D.D. decreases but strength increases.
3. M.D.D. and O.M.C. both increase.
Which of the statements liven above is correct?
(a). 1 only
(b) 2 only
(c) 3 only
(d) None of the above
Ans. (b)
14. Match List-I with List-II and select the correct answer using the code given below,
the lists;
List-I (Speed) List-II (Application)
A. Space mean speed 1. Road conditions studies
B. Journey speed 2. Regulatory measures
C. Running speed 3. Traffic flow studies
D. Spot speed 4. Delay studies
Code:
A B C D
(a) 3 2 1 4
(b) 1 4 3 2
(c) 3 4 1 2
(d) 1 2 3 4
Ans. (a)
15. Which one of the following methods is generally considered the best for tunnel ventilation?
(a) Driving a drift through the tunne1
(b) ‘Blow in’ method
(c) ‘Blow out’ method
(d) Combination of ‘Blow in’ and ‘Blow out’ methods
Ans. (d)
16. Which one of the following is not related to theories of creep of rails?
(a) Wave theory
(b) Percussion theory
(c) Drag theory
(d) Reversal theory
Ans. (d)
17. What is the steepest gradient permissible on a 2° curve for B.G. line having reeling gradient of 1 in 200?
(a) 1 in 250
(b) 1 in 238
(c) I in 209
(d) I in 198
Ans. (b)
18. Which one of the following is not correct for container ports?
(a) The berth capacity is great
(b) Overall transit time is less
(c) There is minimal damage to cargo
(d) Minimal land is required for the marshalling area
Ans. (b)
19. The daily cover of MSW landfills consists of which one of the following?
(a) Compacted soil
(b) Geomembrane
(c) Geotexile
(d) Geocomposite
Ans. (a)
20. Match List-I with List-II and select the correct answer using the code given below the lists:
List-I (Air Pollution) List-II (Impact on Human Health)
A. Particulates 1. Impairs transport of O2 in bloodstream
B. Carbon monoxide 2. Irritation of mucous membranes of respiratory tract
C. Sulphur oxides 3. Causes coughing, shortness of breath, headache etc.
D. Photochemical oxidants 4. Causes respiratory illness
Code:
A B C D
(a) 2 3 4 1
(b) 4 1 2 3
(c) 2 1 4 3
(d) 4 3 2 1
Ans. (b)
21. Which type of plume may occur during winter nights?
(a) Looping
(b) Inversion
(c) Coning
(d) Lofting
Ans. (d)
22. A machine in a steel plate fabricating industry is found to be producing a sound level of 50 dB. In the expansion plans one more such machine needs to be added. What will be the combined noise level?
(a) 80—100 dB
(b) 101—150 dB
(c) 51—70 dB
(d) 40—50 dB
Ans. (c)
23. A rectangular channel 3 wide is laid on a slope of 0.0002. When the depth of flow in the channel is .l m, what is the average boundary shear stress (nearly)?
(a) 0.3 N/m2
(b) 0.15 N/m2
(c) 3.0 N/m2
(d) 1.5 N/m2
Ans. (d)
24. A river model is constructed to a horizontal scale of 1:1000 and a vertical scale of 1: 100. A model discharge of 0.1 m3 /s would correspond to a discharge in the prototype of what magnitude?
(a) 102 m3 /s
(b) 103 m3 /s
(c) 104 m3 /s
(d) 105 m3 /s
Ans. (d)
25. In the model of a highway bridge constructed to a scale of 1: 25, the force of water on the pier was measured as 5N. What is the force (approximate) on the prototype pier?
(a) 15.6kN
(b) 25.3kN
(c) 78kN
(d) 90kN
Ans. (c)
26. A circular pipe of radius R carries a laminar flow of a fluid. The average velocity is indicated as the local velocity at what radial distance, measured from the centre?
(a) 0.50R
(b) 0.71R
(c) 0.67 R
(d) 0.29 R
Ans. (b)
27. A rectangular channel is 6 m wide and discharges 30 m3 s-1. The upstream depth is2.0 m, acceleration due to gravity is 10 m s-2. Then, what is the specific energy (approximate)?
(a) 2.5
(b) 0.3
(c) 2.3
(d) None of the above
Ans. (c)
28. Flow depths across a sluice gate are 2.0 m and 0.5 m. What is the discharge (perimeter width)?
(a) 1.0 m2/s
(b) 1.4 m2/s
(c) 2.0 m2/s
(d) 2.8 m2/s
Ans. (d)
29. A right-angled triangular channel, symmetrical in section about the vertical, carries a discharge of 5 m3/s with a velocity of 1.25 m/s. What is the approximate value of the Froude number of the flow?
(a) 0.3
(b) 0.4
(c) 0.5
(d) 0.6
Ans. (b)
30. Consider the following statements associated with groynes:
1. Hydraulic behaviour of a system of groynes is influenced by the characteristics of particles that constitute the littoral drift.
2. Groyne is constructed approximately parallel to shore. Which of the statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Ans. (a)
31. What is the wave velocity for a uniform train of wave beyond the storm centre for a wave length of 20 m in 14 m deep water?
(a) 5.5 m/s
(b) 11.2 m/s
(c) 4.5 m/s
(d) 9m/s
Ans. (a)
32. As the elevation increases, the runway length has to be changed at what rate?
(a) Decreased @ 5% per 300 m rise in elevation above M.S.L.
(b) Increased @ 7% per 300 m rise in elevation above M.S.L
(c) Decreased @ 9% per 300 m rise in elevation above M.S.L.
(d) Increased @ 15% per 300 m rise in elevation above MS.L.
Ans. (b)
The following questions consists of two statements , Assertion and Reason. While answering these questions choose any of the following four responses
a. If both assertion and reason are true and the reason is correct explanation of assertion.
b. If both assertion and reason are true but reason is not a correct explanation of assertion.
c. If assertion is true and reason is false.
d. If both assertion and reason are false.
33. Assertion (A): A discrete particle (of diameter d0) settling in a circular sedimentation
tank follows a parabolic path.
Reason (R): The downward settling velocity (v0) of the discrete particle (of diameter d0)
in a circular sedimentation tank does not change with time.
Ans. (a)
34. Assertion (A): Shear strength parameters of sand can be estimated by conducting Unconfined compression test.
Reason (R): The effective angle of shearing resistance of sand is nearly the same for dry
and saturated sands, in drained condition.
Ans. (d)
35. Assertion (A): Estimation of settlement of foundations on sandy soils can be done by using SPT values.
Reason (R): Sampling in cohesion less soil without disturbing the structure is difficult.
Ans. (b)
36. Assertion (A): The water content of inorganic soils is determined by heating the soil in an oven at a temperature of 105° to 110° C.
Reason (R): The free water, absorbed water and structural water are all completely removed from the soil by heating it at 105° to 110° C.
Ans. (c)
37. A sailor, standing on the deck of a ship, just sees the light beam from a lighthouse on the shore. If the height of the sailor’s eye and of the light beam at the lighthouse, above the sea level are 9 m and 25 m respectively, what is the distance between the sailor and the lighthouse?
(a) 29.8 km
(b) 31.1 km
(c) 31.9 km
(d) 33.2 km
Ans. (b)
38. Match List-I with List-il and select the correct answer using the code given below the lists;
List-I (Instrument) List-II (Use)
A. Sub tense bar 1. To determine difference in elevation between points
B. Sextant 2. To determine horizontal distance
C. Tangent clinometers 3. To measure angles
D. Range finder 4. To establish right angles
Code:
A B C D
(a) 2 4 1 3
(b) 1 3 2 4
(c) 2 3 1 4
(d) 1 4 2 3
Ans. (c)
39. Which one of the following instruments can be used as clinometers? -
(a) Prism square
(b) Line ranger
(c) Abney level
(d) Optical square
Ans. (c)
40. Which among the following brings about the Hazardous Waste Management and Handling Rules in India?
(a) Central Pollution Control Board
(b) Ministry of Environment and Forests
(c) Ministry of Urban Development
(d) Ministry of Rural Development
Ans. (b)
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