Civil Engineering Objective Question - 05

Civil Engineering Objective Question - 05

1. Which of the following methods is used in subsurface investigation of GW?

(A) Standard penetration test
(B) Air surging and pumping method
(C) Resistivity logging method
(D) Cathodic Protection Method
Ans - C  

2. Which of the following shows the correct sequence of the name of Indian river basins in descending order of average annual runoff potential?

(A) Narmada > Godavari > Tapi 
(B) Godavari > Narmada > Tapi
(C) Tapi > Narmada > Godavari 
(D) Narmada > Tapi > Godavari
Ans - B

3. A medium irrigation project has CCA

(A) More than 1,00,000 hectare
(B) Between 10,000 to 1,00,000 hectare
(C) Between 2,000 and 10,000 hectare
(D) Less than 10,000 hectare
Ans - C

4. Which of the following is not a surface irrigation method?

(A) Sprinkler Irrigation 
(B) Border Irrigation
(C) Furrow Irrigation 
(D) Basin Irrigation
Ans - A

5. In estimation of the crop water requirements, the delta of a crop is expressed in a unit

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(A) hectare pre cumec 
(B) hectare
(C) cumecs 
(D) mm
Ans - D

6. The ratio of total deposited sediment in reservoir to the total sediment inflow over a period is

(A) Surcharge 
(B) Bed load factor
(C) Displacement efficiency 
(D) Trap efficiency
Ans - D

7. Which of the following conditions is not satisfying true regime condition as suggested by Lacey’s theory?

(A) Discharge is constant
(B) Flow is uniform
(C) Silt grade and silt charge is variable
(D) Soil is incoherent alluvium
Ans - C

8. Pressure relief valves are provided in lined canal when

(A) canal is in full cutting
(B) canal is in full banking
(C) canal is in partial cutting and banking
(D) canal is in barrel form in aqueduct
Ans - A

9. In glacis type fall, the energy is dissipated due to

(A) hydraulic jump 
(B) bucket rollers
(C) ground rollers 
Ans - A

10. In ogee shaped spillway, for head over crest, H, the discharge is proportional to

(A) H 
(B) H0.5
(C) H2.5 
(D) H1.5
Ans - D

11. Inorganic clays have specific gravity usually between following range

(A) 2.70 to 2.80 
(B) 1.65 to 2.65
(C) 2.40 to 2.50 
(D) 2.90 to 3.00
Ans - A

12. Coarse grained soils, containing fines between 5% - 12%, are designated as :

(A) GW-GM and SP-SM 
(B) CL-ML
(C) GW-SC 
(D) AM-DW
Ans - A

13. When sustained downward seepage forces are acting on the soil and later when seepage stops, soil will become

(A) Pre consolidated 
(B) Normally consolidated
(C) Under consolidated 
(D) Pre compacted

14. Bishop’s method of stability analysis

(A) Is more conservative
(B) Is not preferred
(C) Neglects the effect of forces acting on the sides of the slices
(D) Assumes the slip surface as an arc of a circle
Ans - D

15. When liquidity index is between 0 and 1 the soil will behave like

(A) Liquid 
(B) Plastic
(C) Solid 
(D) Sand
Ans - B

16. In active state of plastic equilibrium in a non cohesive soil with horizontal ground surface

(A) Major principal stress is horizontal
(B) Major principal stress is vertical
(C) Minor principal stress is inclined
(D) Minor and major principal stresses are equally inclined to horizontal
Ans - B

17. The Westergaard analysis is used for

(A) sandy soils
(B) stratified soils
(C) cohesive soils 
Ans - B

18. According to Vesic, deep foundations in sand having Df/B ratio greater than 10 are likely to fail in

(A) General shear failure mode 
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(B) Local shear failure mode
(C) Punching shear failure mode 
(D) Local bending failure mode
Ans - C

19. Which of the following is not the characteristic of green building?

(A) Use of natural light and ventilation
(B) Solar PV Panels at roof
(C) Roof top rainwater harvesting
(D) Use of material with high thermal conductivity
Ans - D

20. If the water content of a fully saturated soil mass is 100%, then the voids ratio of the sample is

(A) Less than specific gravity of soil
(B) Equal to specific gravity of soil
(C) Greater than specific gravity of soil
(D) Independent of specific gravity of soil
Ans - B

21. Fine grained soil are sub divided into

(A) Silt and clay 
(B) Sand and clay
(C) Organic and silt 
(D) Gravel and peat
Ans - A

22. In terms of permeability parameter, which of the following statement is true

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(A) clays>silts>sands 
(B) silts>sands>clays
(C) sands>silts>clays 
(D) silts>rock>clays
Ans - C

23. A stand pipe in the grout hole is absolutely essential during grouting operation of soil when

(A) There are many surface cracks
(B) Rock is very weak
(C) Drainage is towards the hole
(D) All of the above
Ans - D

24. Negative skin friction on piles

(A) Is developed due to relative settlement of the soil
(B) Develops in hard clays
(C) Increases the pile capacity
(D) Develops due to driving of piles
Ans - A

25. For determining the ultimate bearing capacity of soil, the recommended size of a square bearing plate to be used in load plate test should be 30 to 75 cm square with a minimum thickness of

(A) 5mm 
(B) 10mm
(C) 15mm 
Ans - D

26. Under-reamed piles are generally

(A) driven piles 
(B) bored piles
(C) precast piles 
(D) cased piles.
Ans - B

27. A Flow net cannot be utilized for the determination of which of the parameters

(A) Exit gradient & quantity of Seepage
(B) Hydrostatic pressure
(C) Seepage pressure
(D) Slope of the gradient
Ans - D

28. To determine stability of earth dam slopes immediately after construction the pore pressures are generally estimated using

(A) Bishop’s method 
(B) Hilf’s method
(C) Culmann’s method 
(D) Kirchoff’s method
Ans - B

29. Following statements are made on compacted soils, wherein DS stands for the soils compacted on dry side of optimum moisture content and WS stands for the soils compacted on wet side of optimum moisture content. Identify the incorrect statement.

(A) Soil structure is flocculated on DS and dispersed on WS.
(B) Construction pore water pressure is low on DS and high on WS.
(C) On drying, shrinkage is high on DS and low on WS.
(D) On access to water, swelling is high on DS and low on WS.
Ans - C

30. The standard Proctor compaction curve of a clay is depicted in the figure. Points A, B and C correspond to three compaction states of the soil, which fall on this curve. For which point(s) is the coefficient of permeability minimum?

(A) A and C 
(B) A
(C) B 
(D) C
Ans - C

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