42401. A fall in a canal bed is generally provided, if
42402. According to Khosla, the exist gradient of surface flow
42403. The power transmitted by a belt is maximum when the maximum tension in the belt compared to centrifugal tension is
42404. If the irrigation efficiency is 80%, conveyance losses are 20% and the actual depth of watering is 16 cm, the depth of water required at the canal outlet, is
42405. The useful moisture of soil, is equal to its
42406. Canals taken off from ice-fed perennial rivers, are known
42407. The down stream expansion head of a guide bank is extended to subtend an angle at the centre, equal to
42408. Trial procedure of canal design by Kennedy's theory is based upon the equation
42409. The main cause of silting up a channel,
42410. In north Indian Plains, optimum depth of kor watering for wheat, is
42411. Bed bars in a canal are provided
42412. The most suitable location of a canal head work, is
42413. Useful soil moisture for plant growth, is
42414. A hydraulic structure is designed to withstand
42415. In gravity canals, F.S.L. is
42416. If d1 is the depth of cutting, d2 is the height of the bank from bed level r2 : 1 and r1 : 1 are the slopes in filling and cutting respectively, the horizontal distance n between the bed and bank, is
42417. The structure constructed to allow drainage water to flow under pressure through an inverted syphon below a canal, is called
42418. The optimum depth of kor watering for a rice crop, is
42419. Bligh's theory of seepage assumes
42420. The Lacey's regime velocity is proportional to
42421. A hydraulic jump is generally formed when a stream moving with
42422. For a unique design of a channel by Kennedy's theory
42423. In a barrage, the crest level is kept
42424. For a standing crop, the consumptive use of water is equal to the depth of water
42425. The state of the soil when plants fail to extract sufficient water for their requirements, is
42426. The field capacity of a soil is 25%, its permanent wilting point is 15% and specific dry unity weight is 1.5. If the depth of root zone of a crop, is 80 cm, the storage capacity of the soil, is
42427. Solution of Laplacian equation in three dimensions of water in a syphon, is done by
42428. The length and width of a meander and also the width of the river, vary roughly as
42429. Regime conditions in a channel may occur if
42430. If the optimum depth of kor watering for a crop is 15.12 cm, the outlet factor for the crop for four week period in hectares per cumec, is
42431. If H and d are the water depth and drop in the bed level at a Sarda fall, the width B of the trapezoidal crest, is given by
42432. According to Bligh's creep theory, percolating water flows along
42433. The width of a meander belt is the transverse distance between
42434. The sensitivity of a rigid module, is
42435. An outlet which maintains a constant discharge irrespective of fluctuation in the water levels of the supplying channel or water course, is known as
42436. Canals constructed for draining off water from water logged areas, are known
42437. A minimum of 90 cm free board is provided if the discharge in the canal is between
42438. If D is the depth of water upstream of the throat above its sill, B is the width of the throat, to achieve critical flow in an open venturi flume, the theoretical maximum flow Q, is
42439. If straight sides of a triangular section of a lined canal with circular bottom of radius R, make an angle θ with horizontal, the area of its cross-section, is
42440. Lacy's regime condition is obtained if
42441. In Montague type fall
42442. If the straight sides of a triangular section of a lined canal with circular bottom of radius D, make an angle θ with horizontal, the hydraulic mean depth is
42443. If water table is comparatively high, the irrigation canal becomes useless, due to
42444. A river is said to be of
42445. A land is said to be water-logged if its soil pores within
42446. In case of a trapezoidal notch fall
42447. The uplift pressure on the roof of an inverted syphon, is maximum when
42448. In rigid module, the discharge
42449. The ratio of the rate of change of discharge of an outlet and parent channel, is known as
42450. Cross regulators in main canals are provided
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