MCQ
41. For wave action in dams, the maximum height of freeboard is generally taken to be equal to
0.5 hw
0.75 hw
1.25 hw
1.50 hw
42. Pick up correct statement from the following:
The air from outer portion of cyclones gets lifted for causing precipitation
The air from central portion of cyclone's gets lifted for causing precipitation
The air from entire surface of the cyclones gets lifted for causing precipitation
None of those
43. Phytometer method is generally used for the measurement of
Interception
Evaporation
Transpiration
None of these
44. The equation P-Q-Te index for determining the infiltration capacity, was suggested by
Horton
Horner
Lloyd
Bernard
45. Knowledge of hydrology is necessary for civil engineers for
Designing and construction of irrigation structures
Designing and construction of bridges and culverts
Flood control works.
All the above
46. The most suitable material for the central impervious core of a zoned embankment type dam is
Clay
Coarse sand
Silty clay
Clay mixed with fine sand
47. If the loss due to friction in pipes is 4 m, the total losses in strainer and bends may be taken as
0.10 m
0.20 m
0.5 m
1.0 m
48. Water contains
One hydrogen atom and one oxygen atom
Two hydrogen atoms and one oxygen atom
One hydrogen atom and two oxygen atoms
Three hydrogen atoms
49. Sharp crested weirs are generally used
For large flows
For small flows
For streams carrying high sediment loads
For rivers carrying floating debris
50. Pick up the correct statement from the following:
The zone below water table, is called zone of saturation Book
The zone above water table, is called acration
The water which exists in the zone of saturation, is called ground water
All the above
51. Pick up the correct statement from the following:
The ratio of total volume of voids in soil aggregates to the total volume of aggregate, is called Porosity
Water retained by the interstices due to molecular attraction, is called pellicular water
Sum of the percentage of specific yield and specific retention is 100
All the above
52. A runoff river plant is
A low head scheme
A medium head scheme
A high head scheme
None of the above
53. Horizontal acceleration due to earthquake results in
Hydrodynamic pressure
Inertia force into the body of the dan
Both (A) and (B)
None of the above
54. Which of the following canal outlets maintains a constant discharge?
Non-modular outlet
Flexible outlet
Rigid module
None of the above
55. Instantaneous unit hydrograph is a hydrograph of (i) Unit duration (ii) Unit rainfall excess (iii) Infinitely small duration (iv) Infinitely small rainfall excess The correct answer is
(i) and (ii)
(i) and (iv)
(ii) and (iii)
(iii) and (iv)
56. If there are two canals taking off from each flank of a river, then there will be
One divides wall and one under-sluice
One divides wall and two under-sluices
Two divide walls and one under-sluice
Two divide walls and two under-sluices
57. From the data of the rain storm shown in the below figure, the value of Windex is
1.5 cm/hour
2 cm/hour
2.5 cm/hour
3 cm/hour
58. If the axial length of a drainage basin is 35 km and its form factor is 0.2, the total area of the basin is
205 sq. km.
215 sq. km.
225 sq. km.
245 sq. km.
59. Interception losses are due to (i) Evaporation (ii) Transpiration (iii) Stream flow The correct answer is
Only (i)
(i) and (ii)
(ii) and (iii)
(i), (ii) and (iii)
60. Tortuosity of a meandering river is always
Equal to 1
Less than 1
Greater than 1
Less than or equal to 1