Answer
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Hint: This conventional irrigation method works by having the cattle rotationally shifting a lever. Usually, irrigation is used in areas where rainfall is likely to be erratic or dry or drought.
Complete answer:
> Option A is incorrect. The rope and bucket method are mainly used with hand-dug wells. A bucket is lowered into the water over a line. When the bucket reaches the water it fills and sinks, and the rope is pulled up. It may carry the rope by hand, run via a pulley, or wound on a windlass. Animal traction is often used in conjunction with a pulley.
> Option B is correct. Rahat Irrigation method is the system that uses animals as the labor is an old practice where oxen used a wheel that was attached to them and turned to get the water out of the well and spread over the crops. It was used primarily on the African and Middle East subcontinents.
> Option C is incorrect. Deep-well jet pumps use both the jet suction to carry water into the system, and the impeller pressure to lift the vapor. As one pipe installed to the housing of the impeller pushes water down into the body of the jet which is situated about 20 feet below the minimum water level of the well. A second pipe links the pump back to the output side of the jet engine.
> Option D is incorrect. The Rahat irrigation system needs a wide well which uses a wheel. To get the water out of the well, the wheel is turned by oxen, buffalo, or cows and then spread over the crops.
Hence, The correct answer is option (B).
Note: Modern irrigation system lays pipes in the field and when a valve is switched on and the water is distributed over crops. Drip irrigation is nowadays the most used irrigation method. We lay plastic pipes in rows in the drip irrigation, near the crops or plants.
Complete answer:
> Option A is incorrect. The rope and bucket method are mainly used with hand-dug wells. A bucket is lowered into the water over a line. When the bucket reaches the water it fills and sinks, and the rope is pulled up. It may carry the rope by hand, run via a pulley, or wound on a windlass. Animal traction is often used in conjunction with a pulley.
> Option B is correct. Rahat Irrigation method is the system that uses animals as the labor is an old practice where oxen used a wheel that was attached to them and turned to get the water out of the well and spread over the crops. It was used primarily on the African and Middle East subcontinents.
> Option C is incorrect. Deep-well jet pumps use both the jet suction to carry water into the system, and the impeller pressure to lift the vapor. As one pipe installed to the housing of the impeller pushes water down into the body of the jet which is situated about 20 feet below the minimum water level of the well. A second pipe links the pump back to the output side of the jet engine.
> Option D is incorrect. The Rahat irrigation system needs a wide well which uses a wheel. To get the water out of the well, the wheel is turned by oxen, buffalo, or cows and then spread over the crops.
Hence, The correct answer is option (B).
Note: Modern irrigation system lays pipes in the field and when a valve is switched on and the water is distributed over crops. Drip irrigation is nowadays the most used irrigation method. We lay plastic pipes in rows in the drip irrigation, near the crops or plants.
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