Q. If water table is comparatively high, the irrigation canal becomes useless, due to

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Q. 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

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Q. The water face of the guide banks, is protected by

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Q. A fall which maintains its depth, is

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Q. The level of the fioor of a syphon aqueduct can be obtained

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Q. The ratio of the head recovered to the head put in, is known as

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Q. Cross regulators in main canals are provided

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Q. The width of a dowla is generally kept between 30 to 60 cm and its height above the road level should invariably be more than

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Q. According to Lacey, depth of scour in a river depends upon the straightness of the reach. If D is the depth of scour in regime flow in a right angled bend, it is

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Q. Pick up the correct statement from the following

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Q. If A is the area of the surface, x is the depth of its C.G. from the surface of the water and ω is the density of water, then

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Q. Disposal of extra excavated earth of canals, is utilised to provide a spoil bank on

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Q. Lane's weighted creep theory assumes

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Q. If average particle size of the silt in millimetres is m, the Lacey's silt factor f is proportional to

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Q. Effective precipitation for a crop may be defined as

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Q. In a concrete canal the approximate permissible velocity of water should not exceed

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Q. A current meter measures the velocity of flow, if it is held

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Q. Garnett's diagrams are used for graphical solution of design equations of a canal by

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Q. Which one of the following statements is correct ?

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Q. In a syphon aqueduct

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