Q. On what factors does the economic water rate depend?

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Q. Canal drop or canal fall is needed construction in the canal bed.

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Q. On what term does the construction of a fall in the case of the main canal depend?

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Q. On what factor in case of branch canals, the construction site for a fall depends?

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Q. How many types of falls are present?

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Q. What number of major defects does the ogee fall have?

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Q. In which fall the depth discharge relationship is unaffected?

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Q. Which type of fall is suitable for 60 cumecs discharge and 1.5 m drop?

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Q. What is the reason for the construction of baffle wall in baffle fall?

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Q. Which type of fall is not adopted in India?

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Q. Canal drops are provided to _______________

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Q. For a canal that irrigates the area directly the fall should be provided at a location FSL outstrips the G.L before the bed of the canal comes into the filling.

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Q. In case of branch canals and distributary channels, the falls are located with consideration to _________________

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Q. By providing a natural drop in one drop _______________________

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Q. A canal fall is provided when the available natural slope is flatter than the designed bed slope of the channel.

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Q. Consider the following statements.

I. Possibility of combining some other structure with a fall eg. regulator, road bridge etc.
II. Cutting and filling are required below and above the fall should not be necessarily equal.
III. The command should not be reduced due to the lowering of F.S.L and the fall may be located below the outlets.

Which of the following statement is correct for site selection of a fall?

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Q. ______________ fall is adopted for smaller discharges and larger drops.

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Q. Consider the following statements.

I. Syphon falls are commonly used where high levelled small drains do out-fall into a low levelled bigger drain.
II. The D/s well is necessary in case of falls greater than 1.8 m and for discharges greater than 0.29 cumecs.
III. The design discharge is determined based on the fact that V-notch is used.

Which of the following statement is correct?

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Q. Calculate the velocity over the notch (V₁) and the velocity through the pipe (V₃) if the full supply discharge is 2 cumecs. The area of flow over the trapezoidal notch is 0.58 m². Assume the value of diameter of the pipe used as 1 m.

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Q. What is the height of the centre of pressure above the water level in the inlet well if the R.L of the centre of pressure is 150.83 m and the R.L of water level in inlet well is 148.30 m?

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