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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Q. Calculate the diameter of the inlet well if the X and Y coordinate of the jet (issuing from the centre of pressure) w.r.t the water surface in the inlet well is 1.05 m and 1.88 m respectively.

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Q. Which of the following loss is not considered while calculating the total head loss between the inlet well and D/s FSL?

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Q. The discharge formula used in the design of the syphon well drop is ____________

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Q. Which of the following statement is wrong?

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Q. In what intervals the top width of the notch lies?

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Q. By what value the thickness of notch pier should not be less than the water depth?

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Q. The length of the weir will not exceed the bed width of the canal upstream, in case of trapezoidal notch fall.

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Q. In case of design of sarda type fall the length of crest is kept equal to ____________

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