41. If d is the depth of the aquifer through which water is flowing, then the relationship between permeability k and transmissible T is given by
a) T = kd
b) T = k/d
c) T= Vkd
d) k= VTd
Ans: a
42. An artesian aquifer is the one where
a) water surface under the ground is at atmospheric pressure
b) water is under pressure between two impervious strata
c) water table serves as upper surface of zone of saturation
d) none of the above
Ans: b
43. A deep well
a) is always deeper than a shallow well
b) has more discharge than a shallow well
c) is weaker structurally than a shallow well
d) both (a) and (b)
Ans: b
44. A multipurpose reservoir is the one which is
a) designed for one purpose but serves more than one purpose
b) planned and constructed to serve various purposes
c) both (a) and (b)
d) none of the above
Ans: b
45. The useful storage is the volume of water stored in the reservoir between
a) minimum pool level and maximum pool level
b) minimum pool level and normal pool level
c) normal pool level and maximum pool level
d) river bed and minimum pool level
Ans: b
46. The water stored in the reservoir below the minimum pool level is called
a) useful storage
b) dead storage
c) valley storage
d) surcharge storage
Ans: b
47. For a flood control reservoir, the effective storage is equal to
a) useful storage - valley storage
b) useful storage + surcharge storage
c) useful storage + surcharge storage + valley storage
d) useful storage + surcharge storage -valley storage
Ans: d
48. Trap efficiency of a reservoir is a function of
a) capacity/inflow ratio
b) capacity/outflow ratio
c) outflow/inflow ratio
d) none of the above
Ans: a
49. The total capacity of a reservoir is 25 million cubic metres and dead storage is 5 million cubic metres. If the average volume of sediment deposition is 0.10 million cubic metre per year, then the usefulness of the reservoir will start reducing after
a) 50 years
b) 150 years
c) 200 years
d) 250 years
Ans: a
50. The forces, which are considered for the analysis of an elementary profile of a gravity dam under empty reservoir condition, are
i) Water pressure
ii) Self weight
iii) Uplift
iv) Pressure due to earthquake
The correct answer is
a) Only (ii)
b) (i), (ii) and (iii)
c) (i), (ii) and (iv)
d) (i), (ii), (iii) and (iv)
Ans: a
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a) T = kd
b) T = k/d
c) T= Vkd
d) k= VTd
Ans: a
42. An artesian aquifer is the one where
a) water surface under the ground is at atmospheric pressure
b) water is under pressure between two impervious strata
c) water table serves as upper surface of zone of saturation
d) none of the above
Ans: b
43. A deep well
a) is always deeper than a shallow well
b) has more discharge than a shallow well
c) is weaker structurally than a shallow well
d) both (a) and (b)
Ans: b
44. A multipurpose reservoir is the one which is
a) designed for one purpose but serves more than one purpose
b) planned and constructed to serve various purposes
c) both (a) and (b)
d) none of the above
Ans: b
45. The useful storage is the volume of water stored in the reservoir between
a) minimum pool level and maximum pool level
b) minimum pool level and normal pool level
c) normal pool level and maximum pool level
d) river bed and minimum pool level
Ans: b
46. The water stored in the reservoir below the minimum pool level is called
a) useful storage
b) dead storage
c) valley storage
d) surcharge storage
Ans: b
47. For a flood control reservoir, the effective storage is equal to
a) useful storage - valley storage
b) useful storage + surcharge storage
c) useful storage + surcharge storage + valley storage
d) useful storage + surcharge storage -valley storage
Ans: d
48. Trap efficiency of a reservoir is a function of
a) capacity/inflow ratio
b) capacity/outflow ratio
c) outflow/inflow ratio
d) none of the above
Ans: a
49. The total capacity of a reservoir is 25 million cubic metres and dead storage is 5 million cubic metres. If the average volume of sediment deposition is 0.10 million cubic metre per year, then the usefulness of the reservoir will start reducing after
a) 50 years
b) 150 years
c) 200 years
d) 250 years
Ans: a
50. The forces, which are considered for the analysis of an elementary profile of a gravity dam under empty reservoir condition, are
i) Water pressure
ii) Self weight
iii) Uplift
iv) Pressure due to earthquake
The correct answer is
a) Only (ii)
b) (i), (ii) and (iii)
c) (i), (ii) and (iv)
d) (i), (ii), (iii) and (iv)
Ans: a
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