Herewith below we have shared more than MCQs in Water Supply Engineering of our Civil Engineering subject. This will be very useful to study MCQs in systematic Manner.
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- Water Supply Engineering Practise MCQs 0%
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- 329
- Answered
- Review
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Question 1 of 329
1. Question
When the reduced level of the water source is higher than the reduced level of the consumer’s place, water is generally supplied
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Question 2 of 329
2. Question
Surcharge storage zone of a reservoir, is
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Question 3 of 329
3. Question
In pressure supply mains, water hammer pressure is reduced by providing
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Question 4 of 329
4. Question
To pump water from a water reservoir 3 m deep and maximum water level at 135 m, a pump is installed to lift water up to R.L. 175 m at a constant rate of 36,00,000 litres per hour. If the length of the pipe is 1506 m and f = 0.01, ignoring other minor losses and assuming the economical diameter from Lea’s formula D = 1.2 VQ, the water horse power of the pump is
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Question 5 of 329
5. Question
Turbidity of raw water is a measure of
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Question 6 of 329
6. Question
If the chosen diameter of a pipe, is less than the economical diameter
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Question 7 of 329
7. Question
Pick up the correct statement from the following:
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Question 8 of 329
8. Question
The expected discharge to be obtained from an open well sunk in coarse sand is 0.0059 cumec. If the working depression head of the well is 3 m, the minimum diameter of the well, is
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Question 9 of 329
9. Question
Pick up the correct statement from the following:
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Question 10 of 329
10. Question
In centrifugal pump installation,
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Question 11 of 329
11. Question
While determining the yield of open wells by the pumping test
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Question 12 of 329
12. Question
The process of passing water through beds of granular materials, is called
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Question 13 of 329
13. Question
For the prediction of future population of a city, the factor to be considered, is
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Question 14 of 329
14. Question
Mathamoglobinemia or blue baby disease is caused due to
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Question 15 of 329
15. Question
To control the growth of algae in reservoirs, the compound which is used, is
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Question 16 of 329
16. Question
The population of a city in 2000 is 50,000. The average increase in population over last 8 decades is 7500 and average incremental increase during 8 decades is 750. The population of the city based on incremental method, in the year 2020 will be
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Question 17 of 329
17. Question
A pressure conduit laid underground, may not be subjected to
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Question 18 of 329
18. Question
The bacterias which require free oxygen for their survival, are called
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Question 19 of 329
19. Question
Gravity conduits are generally in the form of
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Question 20 of 329
20. Question
The main disadvantage of hard water, is
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Question 21 of 329
21. Question
The formula Q = P – K [1.8T + 32] in which Q is runoff, P is annual rain fall in cm, T is mean annual temperature in centigrade and K is a constant, is known
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Question 22 of 329
22. Question
The bed slope in slow sand filters, is generally kept
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Question 23 of 329
23. Question
The water level in an open well was depressed by pumping 2.5 m and recuperated 2.87 m in 3 hours and 50 minutes. The yield of the well per minute is
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Question 24 of 329
24. Question
Perched aquifers are generally found
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Question 25 of 329
25. Question
Pick up the incorrect statement from the following:
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Question 26 of 329
26. Question
Mostly used coagulant, is
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Question 27 of 329
27. Question
A centrifugal pump is required to be primed before starting if it is located
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Question 28 of 329
28. Question
Suction lift of a pump depends upon
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Question 29 of 329
29. Question
Shrouding’ is essentially provided in
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Question 30 of 329
30. Question
The maximum permissible hardness for public supplies is
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Question 31 of 329
31. Question
Time of concentration
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Question 32 of 329
32. Question
The chlorine supply cylinders are generally kept at 38°C to 40°C to prevent
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Question 33 of 329
33. Question
An earth formation which, although porous and capable of absorbing water does not provide an appreciable supply to wells, is known as
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Question 34 of 329
34. Question
Property of earth to allow water to pass through it, is known as
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Question 35 of 329
35. Question
Plain chlorination is used for water
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Question 36 of 329
36. Question
A city supply includes
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Question 37 of 329
37. Question
The pH value of water is kept slightly less than 7 so that hydrochloride ions may combine with ammonia ions to form
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Question 38 of 329
38. Question
Pick up the correct statement from the following:
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Question 39 of 329
39. Question
Pick up the correct statement from the following:
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Question 40 of 329
40. Question
The difference in the reservoir level and the lowest point of the water mains is 180 m. The expected pressure due to water hammer is 7.5 kg/cm2 in a pressure conduit of diameter 1 m. Assuming the efficiency of the riveted joints of the pipe as 0.6 and minimum cover 3 mm for corrosion, the thickness of the pipe materials, is
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Question 41 of 329
41. Question
Rapid gravity filters
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Question 42 of 329
42. Question
For 3.25 x 10-2 cumecs discharging from a well, a pump is installed to lift water against a total head of 30 m. The minimum required horse power, is
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Question 43 of 329
43. Question
Distribution mains of any water supply, is normally designed for its average daily requirement
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Question 44 of 329
44. Question
Maximum threshold number permitted for indicating the odour of public water supplies, is
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Question 45 of 329
45. Question
The rate of silting in a reservoir
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Question 46 of 329
46. Question
Corrosion of well pipes may not be reduced by
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Question 47 of 329
47. Question
Recuperation test is carried out to determine
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Question 48 of 329
48. Question
Pick up the correct statement from the following:
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Question 49 of 329
49. Question
Pick up the incorrect statement from the following. The underground sources of water, is from
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Question 50 of 329
50. Question
Pick up the correct statement from the following:
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Question 51 of 329
51. Question
Most important method for calculating discharge for planning a water supply project, is
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Question 52 of 329
52. Question
Pick up the correct statement from the following:
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Question 53 of 329
53. Question
Pickup the incorrect statement from the following:
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Question 54 of 329
54. Question
Pick up the correct statement from the following:
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Question 55 of 329
55. Question
Gravity conduits for carrying water from the source are
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Question 56 of 329
56. Question
In a rapid sand filter, air binding is caused due to excessive
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Question 57 of 329
57. Question
According to Godrich the ratio of peak demand rate to mean demand is
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Question 58 of 329
58. Question
The best quality of filter material is obtained from quartzite if it does not loose weight when placed in hydrochloric acid for 24 hours, more than
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Question 59 of 329
59. Question
Pick up the incorrect statement from the following:
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Question 60 of 329
60. Question
The factor for the selection of pumping station site, is
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Question 61 of 329
61. Question
One degree of hardness of water means a content of salts of
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Question 62 of 329
62. Question
The U.C. (uniformity coefficient) D60/D10 for the best filter media sand should be
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Question 63 of 329
63. Question
Manholes are less common in
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Question 64 of 329
64. Question
For determining the velocity of flow of underground water, the most commonly used nonempirical formula is
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Question 65 of 329
65. Question
The most commonly used chemical for de-chlorination of water, is
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Question 66 of 329
66. Question
To remove very fine suspended particles from water, the method adopted is
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Question 67 of 329
67. Question
Sunlight
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Question 68 of 329
68. Question
The detention period for plain sedimentation water tanks, is usually
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Question 69 of 329
69. Question
Air valves are generally provided in pressure pipes of water supply
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Question 70 of 329
70. Question
Pick up the correct statement from the following regarding the pressure conduits:
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Question 71 of 329
71. Question
Pick up the correct statement from the following:
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Question 72 of 329
72. Question
The gaseous form of chlorine gets converted into liquid form when subjected to a pressure of
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Question 73 of 329
73. Question
Flow through period, in sedimentation tanks, is
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Question 74 of 329
74. Question
Turbidity of water may be caused due to
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Question 75 of 329
75. Question
Pick up the incorrect statement from the following:
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Question 76 of 329
76. Question
The maximum hourly consumption, is generally taken as
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Question 77 of 329
77. Question
Hardness of water can be removed by boiling if it is due to
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Question 78 of 329
78. Question
If discharge of a pump is 0.16 cumecs, the economic diameter of pipe, is
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Question 79 of 329
79. Question
Hardness of water is caused by
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Question 80 of 329
80. Question
Pick up the correct statement from the following:
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Question 81 of 329
81. Question
Pick up the correct statement from the following:
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Question 82 of 329
82. Question
Detention period of a settling tank is
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Question 83 of 329
83. Question
The average domestic consumption under normal conditions in an Indian city per day per person, is
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Question 84 of 329
84. Question
Generally, first portion of a logistic curve for the population growth of a developing city, represents the growth of
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Question 85 of 329
85. Question
A pressure conduit carrying water beneath a stream or a canal, is known as
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Question 86 of 329
86. Question
Permanent hardness of water can be removed by
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Question 87 of 329
87. Question
Pick up the correct statement from the following:
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Question 88 of 329
88. Question
The maximum depth of sedimentation tanks is limited to
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Question 89 of 329
89. Question
Pick up the incorrect statement from the following. Intake of water supply should
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Question 90 of 329
90. Question
Pick up the correct statement from the following:
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Question 91 of 329
91. Question
The fire demand of a city may be worked out by
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Question 92 of 329
92. Question
The formula HL = nzVzt/R4/3 for the head loss in conduits is generally known as
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Question 93 of 329
93. Question
The joint used for joining the plain ends of cast iron pipes, is
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Question 94 of 329
94. Question
Disinfection of water with ozone is not good because
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Question 95 of 329
95. Question
The prescribed hardness limit of potable water ranges between
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Question 96 of 329
96. Question
While designing a water supply of an industrial township, industrial and commercial water demand of total supply, is assumed
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Question 97 of 329
97. Question
After cleaning a slow sand filter, the filtered water is not used for
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Question 98 of 329
98. Question
The efficiency of sedimentation tank does not depend upon
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Question 99 of 329
99. Question
Velocity of flow of water in plain sedimentation water tank, is normally kept
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Question 100 of 329
100. Question
Hard water contains
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Question 101 of 329
101. Question
The depth of the water table at a place is 45 m below the general ground level. To lift water from a deep tube well in such a locality, the type of pump to be installed is
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Question 102 of 329
102. Question
In a well planned city, the layout of distribution pipes generally adopted, is
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Question 103 of 329
103. Question
A water channel supported above the ground over trestles, is generally called
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Question 104 of 329
104. Question
Pick up the incorrect statement from the following:
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Question 105 of 329
105. Question
Pick up the incorrect statement from the following:
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Question 106 of 329
106. Question
As per IS : 1172-1963, water required per head per day for average domestic purposes, is
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Question 107 of 329
107. Question
Water to the consumers may be supplied from
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Question 108 of 329
108. Question
The duration of contact of chlorine with water before it is served to the first consumer, should be at least
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Question 109 of 329
109. Question
Water supply system includes
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Question 110 of 329
110. Question
The maximum pressure to which a pipe is subjected to during its operation, is known
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Question 111 of 329
111. Question
A slow sand filter is cleaned if its filter head is higher than
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Question 112 of 329
112. Question
The intake opening is generally covered by a screen to prevent entry of debris etc. and its level is kept
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Question 113 of 329
113. Question
If four fires break out in a city of population 40 lakhs and if each hydrant has three streams and duration of each fire is four hours, the total quantity of water required, is
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Question 114 of 329
114. Question
Steel pipe are
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Question 115 of 329
115. Question
When gravity and pumping systems of water distribution are adopted, the type of distribution reservoir, is
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Question 116 of 329
116. Question
The force which develops in a pressure conduit supported on trestles, is
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Question 117 of 329
117. Question
Standard unit of turbidity of water is in one litre of distilled water, one milligram of finely divided
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Question 118 of 329
118. Question
For complete stabilisation of organic matter in polluted water, it takes
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Question 119 of 329
119. Question
The external load per unit length of
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Question 120 of 329
120. Question
Shales are
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Question 121 of 329
121. Question
The best process of disinfection of public water supply, is by
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Question 122 of 329
122. Question
Pick up the correct statement from the following:
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Question 123 of 329
123. Question
The dilution ratio at which the odour is hardly detectable is generally called threshold odour number and for public supplies it should not exceed
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Question 124 of 329
124. Question
Surge tanks are used
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Question 125 of 329
125. Question
Normal values of overflow rate for plain sedimentation tanks in litres/hr/m2, generally range between
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Question 126 of 329
126. Question
P.V.C. pipes can withstand pressure bead of water upto
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Question 127 of 329
127. Question
Most commonly used pump for lifting water in water supply mains, is
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Question 128 of 329
128. Question
The fire demand for a city of 50,000 populations, according to Godrich formula, is
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Question 129 of 329
129. Question
Pick up the correct statement from the following:
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Question 130 of 329
130. Question
For controlling algae, the most commonly used chemical, is
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Question 131 of 329
131. Question
For centrifugal pumps
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Question 132 of 329
132. Question
The storage capacity of a reservoir may be divided into three zones. The lowest zone is
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Question 133 of 329
133. Question
Economic height of a dam is the height corresponding to which
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Question 134 of 329
134. Question
For maximum alkalinity of water, pH value should be
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Question 135 of 329
135. Question
The efficiency of a pumping set, is generally assumed
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Question 136 of 329
136. Question
The population growth curve is
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Question 137 of 329
137. Question
The fire demand for ascertaining the empirical formula 1136.5 [(P/10) + 10] known as
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Question 138 of 329
138. Question
The bacterias which may survive with or without free oxygen, are called
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Question 139 of 329
139. Question
Aeration of water is done to remove
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Question 140 of 329
140. Question
The maximum pressure to which cast iron pipes may be subjected to, is
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Question 141 of 329
141. Question
Water may not contain much impurity if its source is
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Question 142 of 329
142. Question
In plain sedimentation tanks under normal conditions, impurities are removed upto
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Question 143 of 329
143. Question
In slow sand filters, the turbidity of raw water can be removed only up to
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Question 144 of 329
144. Question
Pressure relief valves are provided in water mains
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Question 145 of 329
145. Question
Quality of water is said to be good if it is
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Question 146 of 329
146. Question
Sluice valves in main water supplies
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Question 147 of 329
147. Question
The head against which the motor works for lifting water, is
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Question 148 of 329
148. Question
Biochemical Oxygen Demand (B.O.D.) of safe drinking water must be
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Question 149 of 329
149. Question
Gravity conduits
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Question 150 of 329
150. Question
At break point of chlorination,
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Question 151 of 329
151. Question
Pick up the correct statement from the following:
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Question 152 of 329
152. Question
The capability of a soil mass of full width and depth to transmit water, is known
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Question 153 of 329
153. Question
The head against which the motor works for lifting water, is
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Question 154 of 329
154. Question
By boiling water, hardness can be removed if it is due to
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Question 155 of 329
155. Question
Derivation of Thiem’s formula Q = 2nT (s1 – s2)/2.3 log™ foA!) is based on the assumption
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Question 156 of 329
156. Question
Pick up the correct statement from the following:
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Question 157 of 329
157. Question
Percussion drilling is unsuitable in
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Question 158 of 329
158. Question
In an artesian aquifer, the draw downs in two observation wells at distances 100 m, and 200 m were found same after one hour and x hours respectively. The value of x, is
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Question 159 of 329
159. Question
Rapid gravity filters can remove bacterial impurities up to a maximum of
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Question 160 of 329
160. Question
Continuous flow of water can be expected from
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Question 161 of 329
161. Question
Reciprocating pumps
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Question 162 of 329
162. Question
Low turbidity of water is detected by
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Question 163 of 329
163. Question
Pick up the correct statement from the following regarding radial flow centrifugal pumps:
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Question 164 of 329
164. Question
Pick up the correct statement from the following:
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Question 165 of 329
165. Question
Silt storage is the same as
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Question 166 of 329
166. Question
The type of pipe commonly used in water supply distribution schemes, is
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Question 167 of 329
167. Question
Pick up the incorrect statement from the following. The source of surface water is from
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Question 168 of 329
168. Question
Water supply includes
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Question 169 of 329
169. Question
m and n are monsoon duration factor and catchment factor respectively. If P is yearly rainfall in cm, runoff can be calculated by
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Question 170 of 329
170. Question
Acidity in water is caused due to