Q. Ecological pyramids were first devised by __________

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Q. Which of the following is correct?

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Q. Wholesome water is also known as _________

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Q. Rate of demand is also known as __________

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Q. Water works are generally design with design period of __________

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Q. What is a design period for storage dam?

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Q. Calculate the hoop stress at the bottom of penstock, if a steel penstock of 1 m and 10 mm thick is subjected to 100m head of water. Take w = 9.81 kN/m³.

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Q. Maximum daily demand = _____ × Average daily demand.

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Q. Which of the following is not a short term estimate in population forecast?

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Q. Pn = P[1+r/100]ⁿ is a formula used in ___________

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Q. According to Freeman, estimate of fire demand can be made from the formula?

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Q. Fire hydrants are located in a main at a distance of ______________

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Q. In total consumption, losses account about __________

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Q. _______ is integrated or summation hydrograph.

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Q. ___________ is an example of a subsurface source.

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Q. Infiltration wells are ____________ wells constructed in series.

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Q. _______ are the horizontal tunnels laid along the banks of river.

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Q. Carbonic acid is high in ______ springs.

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Q. In _________ springs, that trench acts as a storage reservoir.

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Q. Which of the following wells are also known as water table well?

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