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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?

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? Correct Answer I and II

The design discharge of a notch fall is obtained by adding the discharge of rectangular and V-notch i.e. trapezoidal notch taking the value of the coefficient of the discharge as 0.75. The notches are designed by taking into consideration full supply discharge and half supply discharge w.r.t normal water depths in the channel in both cases.

Related Questions

Two centrifugal pumps P and R are available for use in a pipe flow system and their head-discharge characteristics are as follows. Pump P Pump R Discharge (cumecs) Head (m) Discharge (cumecs) Head (m) 0 40 0 45 0.12 35 0.14 40 0.2 28 0.24 35 0.3 18 0.3 28   The following statements (S1, S2, and S3) pertain to the head and discharge values during actual operation. Neglect losses in the system. Which of the following statements are correct? S1: When the two pumps P and R are connected in parallel, the discharge is 0.36 cumecs corresponding to a head of 35 m. S2: When the two pumps P and R are connected in parallel, the discharge is 0.36 cumecs corresponding to a head of 70 m. S3: When the two pumps P and R are connected in series, the discharge is 0.3 cumecs corresponding to a head of 46 m.
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A water tank has been fitted with two taps P and Q and a drain pipe R. Taps P and Q fill at the rate of 12 litres per minute and 10 litres per minute respectively. Consider the following statements S1, S2 and S3: S1: Pipe R drains out at the rate of 6 litres per minute S2: If both the taps and the drain pipe are opened simultaneously, then the tank is filled in 5 hours 45 minutes S3: Pipe R drains out (fully) the filled tank in 15 hours 20 minutes. To know what is the capacity of the tank, which one the following is correct?
A saturated chlorine solution in water, with addition of acid or base, has a pH of or 1.54, an actual chlorine concentration, Cy, of 0.062 M, a hydrochloric acid concentration of 0.029 M, and HOCl concentration of 0.029.
If the first two statements are true, the third statement is :
I. Spot is bigger than King and smaller than Sugar.
II. Ralph is smaller than Sugar and bigger than Spot.
III. King is bigger than Ralph.
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