Q. Which of the following is the expression of the Carmen equation where symbols have their usual meanings?

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Q. Which of the following represents the correct relation between dimensionless friction factor f and Reynolds number?

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Q. Which of the following is the expression of the Rose equation where symbols have their usual meanings?

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Q. When the Reynolds number is greater than 1.9 but less than 500, the coefficient of drag CD is?

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Q. The value of Reynolds number R is 1.5. The coefficient of drag is?

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Q. Rose equation is valid for beds in which voids are clear and unobstructed.

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Q. When does the particle become suspended in an expanded bed?

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Q. The superficial velocity in a stratified bed is equal to __________

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Q. Carmen-Kozney equation has been derived using which of the following equation?

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Q. In which of the following filter, water is passed under higher pressure?

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Q. What is the range of pressure in pressure filter?

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Q. The diameter of the vertical type pressure filter is __________

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Q. Filtration operation in pressure filter is same as in rapid sand filter.

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Q. The effective size of a pressure sand filter is ______

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Q. What is the value of uniformity coefficient in a pressure sand filter?

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Q. The thickness of sand bed of a pressure filter is _____ cm.

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Q. Which type of filter is used in treating swimming pool water?

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Q. The under drainage system in pressure consists of __________

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Q. Consider the following statements regarding pressure filter.

i. It is easy to inspect the under drainage system
ii. It is not possible to provide time for chlorination in direct supply from it
iii. It is not possible to observe the degree of back washing and the agitation process

Which of the above statement is correct?

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Q. The rate of filtration of pressure filtration is ______ l/m²/hour.

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