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The only irrigation semi-module through which the discharge is not proportional to H1/2 where H is the head causing flow through the module is _____________

The only irrigation semi-module through which the discharge is not proportional to H1/2 where H is the head causing flow through the module is _____________ Correct Answer open flume outlet

The discharge through free pipe outlet and Kennedy’s flume outlet is given by- Q = Cd. A. (2gH)1/2 where H is the head on U/s side measured from FSL of distributary up to the centre of pipe outlet, Cd is the coefficient of discharge, and A is the area of cross-section of the pipe. The discharge through an open flume outlet is given as: Q = Cd. W H3/2 where W is the width of the throat. The discharge through AOSM is given by- Q = Cd. (W. y0).(2gH)1/2 where ‘y0’ is the height of an orifice opening.

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.
If one plots the tank irrigation in India and superimposes it with map of well irrigation, one may find that the two are negatively related. Which of the following statements explain the phenomenon? 1. Tank irrigation predates well irrigation. 2. Tank irrigation is in the areas with impervious surface layers. 3. Well irrigation requires sufficient groundwater reserves. 4. Other forms of irrigation are not available. Select the correct answer using the code given below.
If one plots the tank irrigation in India and superimposes it with map of well irrigation,one may find that the two are negatively related. Which of the following statements explain the phenomenon?1. Tank irrigation predates well irrigation.2. Tank irrigation is in the areas with impervioussurface layers.3. Well irrigation requires sufficientground water reserves.4. Other forms of irrigation are not available.Select the correct answer using the code given below.
1996-7 and 2002-3, the area under canal irrigation declined by 2.4 million ha (13.8 percent), the area under tank irrigation fell by 1.4 million ha (42.4 percent), and the area irrigate by all other sources declined by 1 million ha (28 percent). The only irrigation source that increased its share was groundwater wells, by 2.8 million ha (more than 9 percent) Why has such a change in irrigation demands happened? 1. Not enough supply of water from canals 2. More tubewell irrigation by farmers in the source areas of rivers 3. High cost of irrigation water, and  diversion for non-farm use 4. Joint use of water not possible due to social and economic inequalities
Which of the following statements are correct? (a) Low head bubbler irrigation is a modified method of sprinkler irrigation. (b) Micro spray irrigation is a modified method of sprinkler irrigation. (c) Water application efficiency is usually higher in clayey soils than sandy soils. (d) In sprinkler irrigation system water is applied at lower rates than soils in filterability to prevent ponding and surface run off.
Depending upon the source from which the water is drawn, flow irrigation can be sub-divided into 1.River canal irrigation 2. Reservoir or tank irrigation 3. Combined storage and lift irrigation 4. Combined storage and diversion irrigation Which of the above designations are relevant?
Consider the following statements: 1. If x is directly proportional to z and y is directly proportional to z, then (x2 - y2) is directly proportional to z2. 2. If x is inversely proportional to z and y is inversely proportional to z, then (xy) is inversely proportional to z2. Which of the above statements is/are correct?
Manometric head developed hm in m, and discharge Q in lps n respect of two pumps, 1 and 2, are tabulated. The pumps are connected in series against a static head of 100 m. Total head losses for a discharge of Q are as \(\frac{{{Q^2}}}{{100}}\left( m \right).\) What is the delivered discharge? Q in lps 15 18 20 22 25 Hm1 in m 60.6 61.2 62.0 55.0 48.0 Hm2 in m 50.8 51.0 48.8 45.8 40.0
H12+H12→H13+X01+ শক্তি, এখানে X কণাটি কি?
Consider the following statements regarding irrigation: Drip irrigation system, also known as the 'trickle irrigation system' where water is applied on the soil surface at a rate lower than the infiltration rate of the soil. Sprinkler irrigation is not suitable if a site is known to be windy most of the time. Which among the following above given statements are correct?